308
FPUS55 KTFX 180937
ZFPTFX
ZONE FORECAST PRODUCT FOR CENTRAL AND SOUTHWEST MONTANA
NATIONAL WEATHER SERVICE GREAT FALLS MT
337 AM MDT TUE AUG 18 2026
SPOT TEMPERATURES AND PROBABILITIES OF MEASURABLE PRECIPITATION
ARE FOR TODAY, TONIGHT, AND WEDNESDAY.
MTZ301-182200-
EAST GLACIER PARK REGION-
INCLUDING THE CITIES OF EAST GLACIER PARK, KIOWA, BABB,
SAINT MARY, MARIAS PASS, AND LOGAN PASS
337 AM MDT TUE AUG 18 2026
TODAY
PARTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. A 20 PERCENT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 62 TO 72. WEST
WINDS 5 TO 15 MPH. GUSTS UP TO 30 MPH IN THE AFTERNOON.
TONIGHT
MOSTLY CLEAR. PATCHY SMOKE AFTER MIDNIGHT. LOWS IN THE
LOWER 50S. SOUTHWEST WINDS 5 TO 15 MPH WITH GUSTS TO AROUND
30 MPH.
WEDNESDAY
MOSTLY SUNNY. PATCHY SMOKE. HIGHS 65 TO 75. WEST
WINDS 5 TO 15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. PATCHY SMOKE IN THE EVENING.
LOWS IN THE LOWER 50S. SOUTHWEST WINDS 5 TO 10 MPH. GUSTS UP TO
25 MPH IN THE EVENING.
THURSDAY
SUNNY. HIGHS 65 TO 73. NORTHWEST WINDS UP TO 10 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
FRIDAY
MOSTLY SUNNY. HIGHS 69 TO 77.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A 20 PERCENT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN
THE MID 50S.
SATURDAY
PARTLY SUNNY. CHANCE OF RAIN SHOWERS IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 65 TO 75. CHANCE OF PRECIPITATION
40 PERCENT.
SATURDAY NIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS AFTER
MIDNIGHT. LOWS AROUND 50. CHANCE OF PRECIPITATION 20 PERCENT.
SUNDAY
SUNNY WITH A 20 PERCENT CHANCE OF RAIN SHOWERS. HIGHS
58 TO 68.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
HIGHS 62 TO 72.
MTZ307-182200-
SOUTHERN ROCKY MOUNTAIN FRONT-
INCLUDING THE CITY OF ROGERS PASS
337 AM MDT TUE AUG 18 2026
TODAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS EARLY IN THE
AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE AFTERNOON.
HIGHS 64 TO 74. WEST WINDS UP TO 15 MPH. GUSTS UP TO 30 MPH IN
THE AFTERNOON. CHANCE OF PRECIPITATION 20 PERCENT.
TONIGHT
MOSTLY CLEAR. LOWS 46 TO 52. WEST WINDS 5 TO 10 MPH
WITH GUSTS TO AROUND 25 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE AFTERNOON. HIGHS 67 TO
77. WEST WINDS 5 TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 47 TO 53. WEST WINDS UP TO
10 MPH. GUSTS UP TO 25 MPH IN THE EVENING.
THURSDAY
SUNNY. HIGHS 69 TO 79. WEST WINDS UP TO 10 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 48 TO 54.
FRIDAY
MOSTLY SUNNY. HIGHS 70 TO 80.
FRIDAY NIGHT
MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
LOWS 52 TO 58. CHANCE OF PRECIPITATION 20 PERCENT.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 68 TO 78. CHANCE OF
PRECIPITATION 40 PERCENT.
SATURDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. LOWS 47 TO 53.
SUNDAY THROUGH MONDAY
MOSTLY CLEAR. HIGHS 63 TO 76. LOWS IN
THE UPPER 40S.
MTZ302-182200-
NORTHERN HIGH PLAINS-
INCLUDING THE CITIES OF BROWNING, HEART BUTTE, AND DUPUYER
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY CLOUDY EARLY IN THE MORNING THEN BECOMING MOSTLY
SUNNY. PATCHY SMOKE THROUGH THE DAY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S. WEST WINDS
5 TO 15 MPH. GUSTS UP TO 30 MPH IN THE AFTERNOON.
TONIGHT
MOSTLY CLEAR. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. PATCHY SMOKE AFTER MIDNIGHT. LOWS IN THE LOWER 50S.
WEST WINDS 5 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
WEDNESDAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. HIGHS IN
THE UPPER 70S. WEST WINDS 10 TO 15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. WEST
WINDS 5 TO 10 MPH. GUSTS UP TO 25 MPH IN THE EVENING.
THURSDAY
SUNNY. HIGHS IN THE MID 70S. NORTHWEST WINDS 5 TO
10 MPH SHIFTING TO THE NORTH IN THE AFTERNOON.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
HIGHS IN THE UPPER 70S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A 20 PERCENT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN
THE MID 50S.
SATURDAY
PARTLY SUNNY. CHANCE OF RAIN SHOWERS IN THE MORNING,
THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN
THE UPPER 70S. CHANCE OF PRECIPITATION 40 PERCENT.
SATURDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. LOWS IN THE LOWER 50S.
SUNDAY THROUGH MONDAY
MOSTLY CLEAR. HIGHS IN THE MID 70S. LOWS
IN THE UPPER 40S.
MTZ308-182200-
SOUTHERN HIGH PLAINS-
INCLUDING THE CITIES OF BYNUM, CHOTEAU, AND PENDROY
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. PATCHY SMOKE EARLY IN THE MORNING. SLIGHT
CHANCE OF RAIN SHOWERS EARLY IN THE AFTERNOON. SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON. HIGHS IN THE UPPER 70S. WEST
WINDS 5 TO 15 MPH. CHANCE OF PRECIPITATION 20 PERCENT.
TONIGHT
MOSTLY CLEAR. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. LOWS IN THE MID 50S. WEST WINDS 5 TO 10 MPH WITH
GUSTS TO AROUND 25 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE. HIGHS IN THE LOWER 80S. WEST
WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 25 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. PATCHY SMOKE IN THE EVENING.
LOWS IN THE LOWER 50S. WEST WINDS UP TO 10 MPH.
THURSDAY
SUNNY. HIGHS IN THE LOWER 80S. WEST WINDS UP TO
10 MPH SHIFTING TO THE NORTH IN THE AFTERNOON.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLOUDY. A 20 PERCENT CHANCE
OF THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 80S.
SATURDAY NIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS AFTER
MIDNIGHT. LOWS IN THE MID 50S. CHANCE OF PRECIPITATION
20 PERCENT.
SUNDAY THROUGH MONDAY
MOSTLY CLEAR. HIGHS AROUND 80. LOWS IN
THE LOWER 50S.
MTZ303-182200-
EASTERN GLACIER, WESTERN TOOLE, AND CENTRAL PONDERA-
INCLUDING THE CITIES OF CUT BANK, ETHRIDGE, AND SANTA RITA
337 AM MDT TUE AUG 18 2026
TODAY
PARTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. A 20 PERCENT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER 70S.
WEST WINDS UP TO 15 MPH. GUSTS UP TO 30 MPH IN THE AFTERNOON.
TONIGHT
MOSTLY CLEAR. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. PATCHY SMOKE IN THE EVENING. LOWS IN THE LOWER 50S.
WEST WINDS 5 TO 15 MPH. GUSTS UP TO 30 MPH IN THE EVENING.
WEDNESDAY
MOSTLY SUNNY. PATCHY SMOKE. HIGHS IN THE LOWER 80S.
WEST WINDS 5 TO 15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. WEST
WINDS UP TO 10 MPH.
THURSDAY
SUNNY. HIGHS IN THE UPPER 70S. NORTH WINDS 5 TO
15 MPH.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
HIGHS IN THE LOWER 80S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A 20 PERCENT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN
THE MID 50S.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
HIGHS IN THE LOWER 80S. CHANCE OF PRECIPITATION 20 PERCENT.
SATURDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. LOWS IN THE LOWER 50S.
SUNDAY THROUGH MONDAY
MOSTLY CLEAR. HIGHS IN THE UPPER 70S.
LOWS IN THE LOWER 50S.
TEMPERATURE / PRECIPITATION
CUT BANK 78 52 82 / 20 20 0
MTZ304-182200-
EASTERN TOOLE AND LIBERTY-
INCLUDING THE CITIES OF DEVON, SHELBY, CHESTER, GALATA, JOPLIN,
LOTHAIR, AND WHITLASH
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. SLIGHT
CHANCE OF RAIN SHOWERS EARLY IN THE AFTERNOON. SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON. HIGHS IN THE LOWER 80S.
SOUTHEAST WINDS UP TO 10 MPH SHIFTING TO THE WEST WITH GUSTS TO
AROUND 25 MPH IN THE AFTERNOON. CHANCE OF PRECIPITATION
20 PERCENT.
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. PATCHY SMOKE IN THE EVENING. LOWS IN THE MID 50S.
WEST WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 25 MPH.
WEDNESDAY
MOSTLY SUNNY. PATCHY SMOKE IN THE MORNING. HIGHS
80 TO 86. WEST WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE EAST AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS 77 TO 83. NORTH WINDS UP TO 10 MPH.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS IN THE MID 50S.
HIGHS IN THE LOWER 80S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A 20 PERCENT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN
THE UPPER 50S.
SATURDAY
PARTLY SUNNY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS. HIGHS 80 TO 86.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS IN THE MID 50S. CHANCE OF PRECIPITATION
30 PERCENT.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
MORNING. HIGHS 76 TO 82.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
HIGHS IN THE LOWER 80S.
MTZ305-182200-
HILL COUNTY-
INCLUDING THE CITY OF HAVRE
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS EARLY IN THE
AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE AFTERNOON.
PATCHY SMOKE IN THE AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHEAST
WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST IN THE AFTERNOON.
CHANCE OF PRECIPITATION 20 PERCENT.
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. PATCHY SMOKE THROUGH THE NIGHT. LOWS IN THE MID 50S.
WEST WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 25 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. WEST WINDS 5 TO
10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE NORTHEAST AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE LOWER 80S. NORTHEAST WINDS UP TO
10 MPH.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS IN THE MID 50S.
HIGHS IN THE MID 80S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. LOWS IN THE UPPER 50S.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
HIGHS IN THE UPPER 80S. CHANCE OF PRECIPITATION 20 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE
MID 50S. CHANCE OF PRECIPITATION 30 PERCENT.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
MORNING. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
HIGHS IN THE LOWER 80S.
TEMPERATURE / PRECIPITATION
HAVRE 85 55 87 / 20 20 0
MTZ306-182200-
NORTHERN BLAINE COUNTY-
INCLUDING THE CITIES OF CHINOOK, ZURICH, HARLEM, HOGELAND,
AND FORT BELKNAP
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS EARLY IN THE
AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE AFTERNOON.
PATCHY SMOKE LATE IN THE AFTERNOON. HIGHS IN THE LOWER 80S. SOUTH
WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION 20 PERCENT.
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. PATCHY SMOKE THROUGH THE NIGHT. LOWS IN THE MID 50S.
SOUTHWEST WINDS UP TO 10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. WEST WINDS 5 TO
15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTHWEST
WINDS 5 TO 10 MPH SHIFTING TO THE EAST AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE MID 80S. NORTHEAST WINDS UP TO
10 MPH.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS IN THE MID 50S.
HIGHS IN THE MID 80S.
FRIDAY NIGHT
MOSTLY CLEAR IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. LOWS IN THE UPPER 50S.
SATURDAY
BREEZY. PARTLY SUNNY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE MORNING. HIGHS IN THE UPPER 80S.
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE
OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S. CHANCE OF
PRECIPITATION 40 PERCENT.
SUNDAY THROUGH MONDAY
MOSTLY CLEAR. HIGHS IN THE MID 80S. LOWS
IN THE MID 50S.
MTZ309-182200-
EASTERN PONDERA AND EASTERN TETON-
INCLUDING THE CITIES OF BRADY, CONRAD, AND LEDGER
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. PATCHY SMOKE EARLY IN THE MORNING. PATCHY
SMOKE IN THE AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS EARLY IN
THE AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. WEST WINDS UP TO 10 MPH. GUSTS
UP TO 25 MPH IN THE AFTERNOON. CHANCE OF PRECIPITATION
20 PERCENT.
TONIGHT
MOSTLY CLEAR. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. PATCHY SMOKE IN THE EVENING. LOWS IN THE LOWER 50S.
WEST WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 25 MPH.
WEDNESDAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. HIGHS IN
THE MID 80S. WEST WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. WEST
WINDS UP TO 10 MPH.
THURSDAY
SUNNY. HIGHS IN THE LOWER 80S. WEST WINDS UP TO
10 MPH SHIFTING TO THE NORTH IN THE AFTERNOON.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
HIGHS IN THE MID 80S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS. LOWS IN THE UPPER
50S.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
HIGHS IN THE MID 80S. CHANCE OF PRECIPITATION 20 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE
MID 50S. CHANCE OF PRECIPITATION 30 PERCENT.
SUNDAY THROUGH MONDAY
MOSTLY CLEAR. HIGHS IN THE LOWER 80S.
LOWS IN THE LOWER 50S.
MTZ310-182200-
WESTERN AND CENTRAL CHOUTEAU COUNTY-
INCLUDING THE CITIES OF FLOWEREE, CARTER, AND FORT BENTON
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. PATCHY SMOKE EARLY IN THE MORNING. PATCHY
SMOKE LATE IN THE AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS EARLY
IN THE AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. SOUTH WINDS UP TO 5 MPH
SHIFTING TO THE WEST IN THE AFTERNOON. CHANCE OF PRECIPITATION
20 PERCENT.
TONIGHT
PATCHY SMOKE IN THE EVENING. PARTLY CLOUDY WITH A
20 PERCENT CHANCE OF RAIN SHOWERS. LOWS IN THE MID 50S. WEST
WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 25 MPH.
WEDNESDAY
MOSTLY SUNNY. PATCHY SMOKE IN THE AFTERNOON. HIGHS
IN THE MID 80S. WEST WINDS 5 TO 15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE MID 80S. WEST WINDS UP TO 5 MPH
SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS IN THE MID 50S.
HIGHS IN THE UPPER 80S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. LOWS IN THE LOWER 60S.
SATURDAY
PARTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 80S.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS IN THE UPPER 50S. CHANCE OF PRECIPITATION
40 PERCENT.
SUNDAY THROUGH MONDAY
MOSTLY CLEAR. HIGHS IN THE MID 80S. LOWS
IN THE MID 50S.
MTZ311-182200-
BEARS PAW MOUNTAINS AND SOUTHERN BLAINE-
INCLUDING THE CITY OF ROCKY BOY
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS EARLY IN THE
AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE AFTERNOON.
PATCHY SMOKE IN THE AFTERNOON. HIGHS 78 TO 84. SOUTH WINDS UP TO
5 MPH SHIFTING TO THE SOUTHWEST IN THE AFTERNOON. CHANCE OF
PRECIPITATION 20 PERCENT.
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. PATCHY SMOKE THROUGH THE NIGHT. LOWS IN THE UPPER
50S. SOUTHWEST WINDS UP TO 10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS 80 TO 86. WEST WINDS 5 TO
15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S.
NORTHWEST WINDS UP TO 10 MPH SHIFTING TO THE EAST AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS 81 TO 87. SOUTHEAST WINDS UP TO 5 MPH
SHIFTING TO THE NORTHEAST IN THE AFTERNOON.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS IN THE UPPER 50S.
HIGHS 81 TO 87.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. LOWS IN THE LOWER 60S.
SATURDAY
PARTLY SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE MORNING. HIGHS 83 TO 89.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS AROUND
60. CHANCE OF PRECIPITATION 30 PERCENT.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS 79 TO 85.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE UPPER 50S.
HIGHS 80 TO 86.
MTZ312-182200-
CASCADE COUNTY BELOW 5000FT-
INCLUDING THE CITY OF GREAT FALLS
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS EARLY IN THE
AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE AFTERNOON.
HIGHS IN THE LOWER 80S. WEST WINDS UP TO 15 MPH. CHANCE OF
PRECIPITATION 20 PERCENT.
TONIGHT
MOSTLY CLEAR. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. LOWS IN THE MID 50S. WEST WINDS 5 TO 10 MPH SHIFTING
TO THE SOUTHWEST AFTER MIDNIGHT. GUSTS UP TO 25 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE AFTERNOON. HIGHS IN THE
MID 80S. SOUTHWEST WINDS 5 TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. WEST WINDS
UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE MID 80S. SOUTHWEST WINDS UP TO
10 MPH SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS IN THE MID 50S.
HIGHS IN THE MID 80S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS. LOWS AROUND 60.
SATURDAY
PARTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 80S.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS IN THE MID 50S. CHANCE OF PRECIPITATION
40 PERCENT.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE MID 50S.
HIGHS IN THE MID 80S.
TEMPERATURE / PRECIPITATION
GREAT FALLS ARPT 83 54 86 / 20 20 0
MTZ313-182200-
JUDITH BASIN COUNTY AND JUDITH GAP-
INCLUDING THE CITIES OF RAYNESFORD, GEYSER, STANFORD, WINDHAM,
BENCHLAND, HOBSON, AND MOCCASIN
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER 70S.
SOUTHWEST WINDS UP TO 5 MPH SHIFTING TO THE NORTHWEST 5 TO 15 MPH
IN THE AFTERNOON. CHANCE OF PRECIPITATION 40 PERCENT.
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. LOWS IN THE LOWER 50S. SOUTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE AFTERNOON. HIGHS IN THE
LOWER 80S. WEST WINDS 10 TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. NORTHWEST
WINDS UP TO 10 MPH WITH GUSTS TO AROUND 25 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE MID 80S. SOUTHWEST WINDS UP TO
10 MPH SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS IN THE MID 50S.
HIGHS IN THE MID 80S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A 20 PERCENT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN
THE UPPER 50S.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN
THE UPPER 80S. CHANCE OF PRECIPITATION 40 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS IN THE MID 50S. CHANCE OF PRECIPITATION
40 PERCENT.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
RAIN SHOWERS. HIGHS IN THE LOWER 80S. LOWS IN THE LOWER 50S.
MONDAY
SUNNY. HIGHS IN THE LOWER 80S.
MTZ314-182200-
FERGUS COUNTY BELOW 4500FT-
INCLUDING THE CITIES OF HILGER AND LEWISTOWN
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. SLIGHT CHANCE OF THUNDERSTORMS EARLY IN
THE AFTERNOON. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON. PATCHY SMOKE IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. SOUTH WINDS UP TO 5 MPH
SHIFTING TO THE NORTHWEST IN THE AFTERNOON. CHANCE OF
PRECIPITATION 50 PERCENT.
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. LOWS 54 TO 60. SOUTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE AFTERNOON. HIGHS IN THE
MID 80S. WEST WINDS 5 TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 54 TO 60. NORTHWEST WINDS
UP TO 10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE UPPER 80S. SOUTHWEST WINDS UP TO
10 MPH SHIFTING TO THE NORTH IN THE AFTERNOON.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS IN THE UPPER 50S.
HIGHS IN THE MID 80S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. LOWS IN THE LOWER 60S.
SATURDAY
PARTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 80S.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS 57 TO 63. CHANCE OF PRECIPITATION
40 PERCENT.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
RAIN SHOWERS. HIGHS IN THE MID 80S. LOWS 54 TO 60.
MONDAY
SUNNY. HIGHS IN THE MID 80S.
TEMPERATURE / PRECIPITATION
LEWISTOWN 79 52 82 / 30 20 0
MTZ315-182200-
UPPER BLACKFOOT AND MACDONALD PASS-
INCLUDING THE CITIES OF MARYSVILLE, LINCOLN, FLESHER PASS,
AND MACDONALD PASS
337 AM MDT TUE AUG 18 2026
TODAY
PARTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 68 TO 76. WEST WINDS UP TO 15 MPH.
TONIGHT
PARTLY CLOUDY. LOWS 48 TO 54. WEST WINDS 5 TO 10 MPH.
GUSTS UP TO 25 MPH IN THE EVENING.
WEDNESDAY
SUNNY. HIGHS 70 TO 80. WEST WINDS UP TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 49 TO 55. WEST WINDS UP TO
10 MPH. GUSTS UP TO 25 MPH IN THE EVENING.
THURSDAY
SUNNY. HIGHS 75 TO 85. WEST WINDS UP TO 10 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 50 TO 58.
FRIDAY
MOSTLY SUNNY. HIGHS 75 TO 85.
FRIDAY NIGHT
MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
LOWS 53 TO 61. CHANCE OF PRECIPITATION 20 PERCENT.
SATURDAY
PARTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 73 TO 81. CHANCE
OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. LOWS 48 TO 56.
CHANCE OF PRECIPITATION 30 PERCENT.
SUNDAY THROUGH MONDAY
MOSTLY CLEAR. HIGHS 68 TO 79. LOWS 47 TO
55.
MTZ316-182200-
GATES OF THE MOUNTAINS-
INCLUDING THE CITIES OF CANYON CREEK, WOLF CREEK, AND CRAIG
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS EARLY IN THE
AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE AFTERNOON.
HIGHS 74 TO 82. WEST WINDS UP TO 15 MPH. CHANCE OF PRECIPITATION
20 PERCENT.
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. LOWS IN THE MID 50S. WEST WINDS 5 TO 10 MPH SHIFTING
TO THE SOUTHWEST AFTER MIDNIGHT.
WEDNESDAY
SUNNY. HIGHS 78 TO 86. SOUTHWEST WINDS 5 TO 10 MPH
WITH GUSTS TO AROUND 25 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. SOUTHWEST
WINDS UP TO 10 MPH.
THURSDAY
SUNNY. HIGHS 80 TO 88. SOUTHWEST WINDS UP TO 5 MPH
SHIFTING TO THE WEST IN THE AFTERNOON.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S.
FRIDAY
MOSTLY SUNNY. HIGHS 80 TO 88.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLOUDY. A 20 PERCENT CHANCE
OF THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS 79 TO 87.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS IN THE MID 50S. CHANCE OF PRECIPITATION
30 PERCENT.
SUNDAY THROUGH MONDAY
MOSTLY CLEAR. HIGHS 75 TO 85. LOWS IN
THE MID 50S.
MTZ317-182200-
LITTLE BELT AND HIGHWOOD MOUNTAINS-
INCLUDING THE CITIES OF MONARCH, NEIHART, AND KINGS HILL PASS
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 67 TO 75. WEST WINDS UP
TO 15 MPH. GUSTS UP TO 30 MPH IN THE AFTERNOON. CHANCE OF
PRECIPITATION 50 PERCENT.
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. LOWS 48 TO 56. WEST WINDS 5 TO 10 MPH. GUSTS UP TO
30 MPH IN THE EVENING.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE AFTERNOON. HIGHS 71 TO
79. WEST WINDS 5 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 51 TO 57. WEST WINDS UP TO
10 MPH WITH GUSTS TO AROUND 30 MPH SHIFTING TO THE SOUTHWEST
AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS 74 TO 82. SOUTHWEST WINDS UP TO 10 MPH
SHIFTING TO THE WEST WITH GUSTS TO AROUND 30 MPH IN THE
AFTERNOON.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 51 TO 57.
FRIDAY
MOSTLY SUNNY. HIGHS 77 TO 83.
FRIDAY NIGHT
PARTLY CLOUDY WITH SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN MOSTLY CLOUDY WITH SLIGHT CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. LOWS 55 TO 63. CHANCE OF PRECIPITATION
20 PERCENT.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS
75 TO 83. CHANCE OF PRECIPITATION 40 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS 52 TO 58. CHANCE OF PRECIPITATION
40 PERCENT.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS 70 TO 78.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 50 TO 56.
MONDAY
SUNNY. HIGHS 71 TO 79.
MTZ318-182200-
SNOWY AND JUDITH MOUNTAINS-
337 AM MDT TUE AUG 18 2026
TODAY
PARTLY SUNNY THEN BECOMING SUNNY LATE IN THE MORNING
THEN BECOMING PARTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS EARLY IN THE AFTERNOON. CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON. HIGHS 70 TO 76. SOUTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE WEST WITH GUSTS TO AROUND
25 MPH IN THE AFTERNOON. CHANCE OF PRECIPITATION 50 PERCENT.
TONIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT.
LOWS IN THE LOWER 50S. SOUTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE AFTERNOON. HIGHS 73 TO
79. WEST WINDS 5 TO 15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. PATCHY SMOKE IN THE EVENING.
LOWS 52 TO 58. NORTHWEST WINDS UP TO 10 MPH WITH GUSTS TO AROUND
25 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS 77 TO 83. SOUTHWEST WINDS UP TO 10 MPH
SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S.
FRIDAY
SUNNY. HIGHS 76 TO 82.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A 20 PERCENT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS
56 TO 62.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 77 TO 85. CHANCE OF
PRECIPITATION 30 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. LOWS IN THE UPPER
50S. CHANCE OF PRECIPITATION 40 PERCENT.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
RAIN SHOWERS. HIGHS 74 TO 80. LOWS IN THE MID 50S.
MONDAY
SUNNY. HIGHS 74 TO 80.
MTZ319-182200-
HELENA VALLEY-
INCLUDING THE CITY OF HELENA
337 AM MDT TUE AUG 18 2026
TODAY
PARTLY SUNNY. SLIGHT CHANCE OF THUNDERSTORMS EARLY IN
THE AFTERNOON. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON. HIGHS IN THE LOWER 80S. WEST
WINDS UP TO 5 MPH INCREASING TO 5 TO 15 MPH IN THE AFTERNOON.
CHANCE OF PRECIPITATION 30 PERCENT.
TONIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN SHOWERS
IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT. LOWS IN THE
LOWER 50S. WEST WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST
AFTER MIDNIGHT.
WEDNESDAY
SUNNY. HIGHS IN THE MID 80S. SOUTH WINDS UP TO 5 MPH
SHIFTING TO THE WEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S. NORTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE UPPER 80S. SOUTH WINDS UP TO
5 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S.
FRIDAY NIGHT
PARTLY CLOUDY WITH SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN MOSTLY CLOUDY WITH SLIGHT CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S. CHANCE OF
PRECIPITATION 20 PERCENT.
SATURDAY
PARTLY SUNNY. A 40 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 80S.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS IN THE MID 50S. CHANCE OF PRECIPITATION
30 PERCENT.
SUNDAY
SUNNY. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S.
MONDAY
SUNNY. HIGHS IN THE MID 80S.
TEMPERATURE / PRECIPITATION
HELENA 83 52 86 / 30 30 0
MTZ320-182200-
BIG BELT, BRIDGER AND CASTLE MOUNTAINS-
INCLUDING THE CITIES OF TRIDENT, MAUDLOW, BATTLE RIDGE PASS,
BOZEMAN PASS, AND DEEP CREEK PASS
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. SLIGHT CHANCE OF THUNDERSTORMS EARLY IN
THE AFTERNOON. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON. HIGHS 67 TO 75. WEST WINDS
UP TO 15 MPH. GUSTS UP TO 30 MPH IN THE AFTERNOON. CHANCE OF
PRECIPITATION 40 PERCENT.
TONIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN SHOWERS
IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT. LOWS IN THE
LOWER 50S. SOUTHWEST WINDS UP TO 10 MPH. GUSTS UP TO 30 MPH IN
THE EVENING.
WEDNESDAY
SUNNY. HIGHS 70 TO 80. WEST WINDS UP TO 15 MPH WITH
GUSTS TO AROUND 35 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. NORTHWEST
WINDS UP TO 10 MPH WITH GUSTS TO AROUND 30 MPH SHIFTING TO THE
SOUTH AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS 75 TO 85. SOUTH WINDS UP TO 5 MPH
SHIFTING TO THE WEST WITH GUSTS TO AROUND 30 MPH IN THE
AFTERNOON.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE MID 50S.
HIGHS 75 TO 85.
FRIDAY NIGHT
PARTLY CLOUDY WITH SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN MOSTLY CLOUDY WITH SLIGHT CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S. CHANCE OF
PRECIPITATION 20 PERCENT.
SATURDAY
PARTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 74 TO 82. CHANCE
OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS IN THE MID 50S. CHANCE OF PRECIPITATION
30 PERCENT.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS 70 TO 80.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S.
MONDAY
SUNNY. HIGHS 71 TO 79.
MTZ321-182200-
MEAGHER COUNTY VALLEYS-
INCLUDING THE CITIES OF MARTINSDALE, CHECKERBOARD, RINGLING,
AND WHITE SULPHUR SPRINGS
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. SLIGHT CHANCE OF THUNDERSTORMS EARLY IN
THE AFTERNOON. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON. HIGHS IN THE MID 70S.
SOUTHWEST WINDS UP TO 10 MPH SHIFTING TO THE WEST WITH GUSTS TO
AROUND 30 MPH IN THE AFTERNOON. CHANCE OF PRECIPITATION
30 PERCENT.
TONIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT.
LOWS IN THE UPPER 40S. WEST WINDS 5 TO 10 MPH WITH GUSTS TO
AROUND 30 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
WEDNESDAY
SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS UP TO
10 MPH SHIFTING TO THE WEST IN THE AFTERNOON. GUSTS UP TO 30 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50. NORTHWEST WINDS
5 TO 10 MPH WITH GUSTS TO AROUND 30 MPH SHIFTING TO THE SOUTH
AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE MID 80S. SOUTH WINDS UP TO 5 MPH
SHIFTING TO THE WEST WITH GUSTS TO AROUND 30 MPH IN THE
AFTERNOON.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE LOWER
50S. HIGHS IN THE MID 80S.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLOUDY. A 20 PERCENT CHANCE
OF THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE LOWER 80S.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS IN THE LOWER 50S. CHANCE OF PRECIPITATION
30 PERCENT.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS IN THE UPPER 70S.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50.
MONDAY
SUNNY. HIGHS AROUND 80.
MTZ322-182200-
ELKHORN AND BOULDER MOUNTAINS-
INCLUDING THE CITIES OF MONTANA CITY, CLANCY, BOULDER, CORBIN,
WICKES, ELK PARK PASS, AND HOMESTAKE PASS
337 AM MDT TUE AUG 18 2026
TODAY
PARTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS EARLY IN THE AFTERNOON. CHANCE OF THUNDERSTORMS
LATE IN THE AFTERNOON. HIGHS 68 TO 76. WEST WINDS UP TO 10 MPH.
CHANCE OF PRECIPITATION 50 PERCENT.
TONIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN SHOWERS
IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT. LOWS 47 TO 53.
WEST WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. HIGHS 71 TO 81. WEST WINDS UP TO 10 MPH.
GUSTS UP TO 25 MPH IN THE AFTERNOON.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 49 TO 55. WEST WINDS UP TO
10 MPH.
THURSDAY
SUNNY. HIGHS 75 TO 85. WEST WINDS UP TO 10 MPH.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 51 TO 59. HIGHS
76 TO 84.
FRIDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS 53 TO 61. CHANCE OF
PRECIPITATION 40 PERCENT.
SATURDAY
PARTLY SUNNY. A 50 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 73 TO 81.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS 48 TO 56.
CHANCE OF PRECIPITATION 30 PERCENT.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS 69 TO 79.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 47 TO 55.
MONDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS 71 TO 79.
MTZ323-182200-
CANYON FERRY AREA-
INCLUDING THE CITIES OF TOSTON, TOWNSEND, AND WINSTON
337 AM MDT TUE AUG 18 2026
TODAY
PARTLY SUNNY. SLIGHT CHANCE OF THUNDERSTORMS EARLY IN
THE AFTERNOON. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON. HIGHS IN THE UPPER 70S.
SOUTH WINDS UP TO 5 MPH SHIFTING TO THE NORTHWEST IN THE
AFTERNOON. CHANCE OF PRECIPITATION 40 PERCENT.
TONIGHT
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF RAIN SHOWERS
IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT. LOWS 50 TO 56.
SOUTH WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 80S. SOUTH WINDS UP TO
5 MPH SHIFTING TO THE NORTHWEST WITH GUSTS TO AROUND 25 MPH IN
THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 51 TO 57. NORTH WINDS UP TO
10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE MID 80S. SOUTH WINDS UP TO 5 MPH
SHIFTING TO THE SOUTHWEST IN THE AFTERNOON.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE UPPER
50S. HIGHS IN THE UPPER 80S.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLOUDY. A 20 PERCENT CHANCE
OF THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE MID 80S.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS IN THE MID 50S.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE MID 50S.
MONDAY
SUNNY. HIGHS IN THE LOWER 80S.
MTZ324-182200-
MISSOURI HEADWATERS-
INCLUDING THE CITIES OF HARRISON, THREE FORKS, WILLOW CREEK,
PONY, AND WHITEHALL
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS EARLY IN THE AFTERNOON. CHANCE OF THUNDERSTORMS
LATE IN THE AFTERNOON. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS UP
TO 5 MPH SHIFTING TO THE NORTHWEST IN THE AFTERNOON. CHANCE OF
PRECIPITATION 40 PERCENT.
TONIGHT
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF RAIN SHOWERS
IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT. LOWS IN THE
LOWER 50S. SOUTHWEST WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 80S. WEST WINDS UP TO
10 MPH WITH GUSTS TO AROUND 25 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S. WEST
WINDS UP TO 10 MPH.
THURSDAY
SUNNY. HIGHS IN THE UPPER 80S. SOUTHWEST WINDS UP TO
5 MPH. GUSTS UP TO 20 MPH IN THE AFTERNOON.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE MID 50S.
HIGHS IN THE UPPER 80S.
FRIDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S. CHANCE OF
PRECIPITATION 40 PERCENT.
SATURDAY
PARTLY SUNNY. A 40 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 80S.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS IN THE MID 50S.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE LOWER 50S.
MONDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S.
MTZ325-182200-
MADISON RIVER VALLEY-
INCLUDING THE CITIES OF CAMERON, ENNIS, JEFFERS, MCALLISTER,
AND NORRIS
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. A 50 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 70S. SOUTH WINDS UP TO 5 MPH
SHIFTING TO THE WEST 5 TO 15 MPH IN THE AFTERNOON.
TONIGHT
MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF RAIN SHOWERS
IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT. LOWS 46 TO 52.
WEST WINDS UP TO 10 MPH WITH GUSTS TO AROUND 25 MPH SHIFTING TO
THE SOUTH AFTER MIDNIGHT.
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 80S. SOUTH WINDS UP TO
10 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 49 TO 55. WEST WINDS UP TO
10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE UPPER 80S. SOUTH WINDS UP TO
5 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 52 TO 58. HIGHS
IN THE UPPER 80S.
FRIDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S. CHANCE OF
PRECIPITATION 40 PERCENT.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN
THE MID 80S. CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. LOWS 50 TO 56.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS
49 TO 55.
MONDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS AROUND 80.
MTZ326-182200-
GALLATIN VALLEY-
INCLUDING THE CITIES OF BOZEMAN AND GALLATIN GATEWAY
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS EARLY IN THE AFTERNOON. CHANCE OF THUNDERSTORMS
LATE IN THE AFTERNOON. HIGHS IN THE UPPER 70S. SOUTH WINDS UP TO
5 MPH SHIFTING TO THE NORTHWEST WITH GUSTS TO AROUND 25 MPH IN
THE AFTERNOON. CHANCE OF PRECIPITATION 40 PERCENT.
TONIGHT
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF RAIN SHOWERS
IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT. LOWS IN THE
LOWER 50S. SOUTH WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 80S. SOUTH WINDS UP TO
5 MPH SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S. NORTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE SOUTHEAST AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE UPPER 80S. SOUTH WINDS UP TO
5 MPH SHIFTING TO THE NORTHWEST WITH GUSTS TO AROUND 20 MPH IN
THE AFTERNOON.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE MID 50S.
HIGHS IN THE UPPER 80S.
FRIDAY NIGHT
MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
LOWS IN THE UPPER 50S. CHANCE OF PRECIPITATION 20 PERCENT.
SATURDAY
PARTLY SUNNY. A 50 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 80S.
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. LOWS IN THE MID
50S. CHANCE OF PRECIPITATION 30 PERCENT.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE LOWER 50S.
MONDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S.
TEMPERATURE / PRECIPITATION
BOZEMAN AIRPORT 79 49 83 / 30 30 0
BOZEMAN MSU 77 51 81 / 30 40 0
MTZ330-182200-
GALLATIN AND MADISON COUNTY MOUNTAINS AND CENTENNIAL MOUNTAINS-
INCLUDING THE CITIES OF BIG SKY, WEST YELLOWSTONE, TARGHEE PASS,
AND RAYNOLDS PASS
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. A 50 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 63 TO 73. SOUTHWEST WINDS UP TO 15 MPH.
GUSTS UP TO 30 MPH IN THE AFTERNOON.
TONIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER
MIDNIGHT. LOWS 42 TO 50. WEST WINDS UP TO 10 MPH. GUSTS UP TO
25 MPH IN THE EVENING. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY
SUNNY. HIGHS 67 TO 77. WEST WINDS UP TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 46 TO 54. WEST WINDS UP TO
10 MPH WITH GUSTS TO AROUND 25 MPH SHIFTING TO THE SOUTH AFTER
MIDNIGHT.
THURSDAY
SUNNY. HIGHS 72 TO 82. SOUTH WINDS UP TO 5 MPH
SHIFTING TO THE WEST WITH GUSTS TO AROUND 25 MPH IN THE
AFTERNOON.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 50 TO 56. HIGHS
74 TO 84.
FRIDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS 52 TO 58. CHANCE OF
PRECIPITATION 40 PERCENT.
SATURDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS
69 TO 79. CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. LOWS 48 TO 54.
SUNDAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 66 TO 76. CHANCE OF
PRECIPITATION 40 PERCENT.
SUNDAY NIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS 46 TO 52.
MONDAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 66 TO 76. CHANCE OF
PRECIPITATION 30 PERCENT.
TEMPERATURE / PRECIPITATION
WEST YELLOWSTONE 75 37 79 / 30 30 0
MTZ327-182200-
NORTHWEST BEAVERHEAD COUNTY-
INCLUDING THE CITIES OF DEWEY, WISDOM, WISE RIVER, BIG HOLE PASS,
AND CHIEF JOSEPH PASS
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS EARLY IN THE AFTERNOON. CHANCE OF THUNDERSTORMS
LATE IN THE AFTERNOON. HIGHS 65 TO 75. WEST WINDS UP TO 15 MPH.
CHANCE OF PRECIPITATION 40 PERCENT.
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. LOWS 40 TO 50. WEST WINDS UP TO 10 MPH. GUSTS UP TO
25 MPH IN THE EVENING.
WEDNESDAY
SUNNY. HIGHS 69 TO 79. WEST WINDS UP TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 43 TO 53. NORTHWEST WINDS
5 TO 10 MPH WITH GUSTS TO AROUND 25 MPH SHIFTING TO THE SOUTHWEST
AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS 74 TO 84. SOUTHWEST WINDS UP TO 10 MPH.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 48 TO 56. HIGHS
75 TO 85.
FRIDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING. LOWS 48 TO 56. CHANCE OF
PRECIPITATION 50 PERCENT.
SATURDAY
PARTLY SUNNY. A 40 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 69 TO 79.
SATURDAY NIGHT
COLDER. MOSTLY CLOUDY WITH A 20 PERCENT CHANCE
OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER
MIDNIGHT. LOWS 42 TO 52.
SUNDAY
SUNNY. HIGHS 67 TO 77.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 42 TO 52.
MONDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS 67 TO 77.
MTZ328-182200-
BEAVERHEAD AND WESTERN MADISON BELOW 6000FT-
INCLUDING THE CITIES OF BANNACK, DILLON, GLEN, AND WATERLOO
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. SLIGHT CHANCE OF THUNDERSTORMS EARLY IN
THE AFTERNOON. CHANCE OF THUNDERSTORMS LATE IN THE AFTERNOON.
HIGHS 74 TO 80. SOUTHWEST WINDS UP TO 5 MPH SHIFTING TO THE WEST
5 TO 15 MPH IN THE AFTERNOON. CHANCE OF THUNDERSTORMS 50 PERCENT.
TONIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN SHOWERS
IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT. LOWS IN THE
UPPER 40S. NORTH WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 25 MPH
SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
WEDNESDAY
SUNNY. HIGHS 78 TO 84. SOUTHWEST WINDS UP TO 10 MPH
WITH GUSTS TO AROUND 25 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S. NORTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS 82 TO 88. SOUTHWEST WINDS UP TO 10 MPH.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE MID 50S.
HIGHS 82 TO 88.
FRIDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING. LOWS IN THE MID 50S.
CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY
PARTLY SUNNY. A 40 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 79 TO 85.
SATURDAY NIGHT AND SUNDAY
PARTLY CLOUDY. A 20 PERCENT CHANCE
OF THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS 77 TO 83.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE LOWER 50S.
MONDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 76 TO 82.
TEMPERATURE / PRECIPITATION
DILLON 79 48 83 / 30 20 0
MTZ329-182200-
RUBY MOUNTAINS AND SOUTHERN BEAVERHEAD MOUNTAINS-
INCLUDING THE CITY OF MONIDA PASS
337 AM MDT TUE AUG 18 2026
TODAY
MOSTLY SUNNY. SLIGHT CHANCE OF THUNDERSTORMS EARLY IN
THE AFTERNOON. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON. HIGHS 68 TO 76. SOUTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE WEST WITH GUSTS TO AROUND
30 MPH IN THE AFTERNOON. CHANCE OF PRECIPITATION 40 PERCENT.
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. LOWS IN THE UPPER 40S. NORTHWEST WINDS 5 TO 10 MPH
WITH GUSTS TO AROUND 25 MPH SHIFTING TO THE SOUTHWEST AFTER
MIDNIGHT.
WEDNESDAY
SUNNY. HIGHS 71 TO 79. WEST WINDS UP TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S. NORTHWEST
WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 25 MPH SHIFTING TO THE
SOUTH AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS 75 TO 83. SOUTHWEST WINDS UP TO 10 MPH.
GUSTS UP TO 30 MPH IN THE AFTERNOON.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE MID 50S.
HIGHS 76 TO 84.
FRIDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 50S. CHANCE OF
PRECIPITATION 50 PERCENT.
SATURDAY
PARTLY SUNNY. A 50 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 71 TO 79.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS IN THE LOWER 50S.
SUNDAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 69 TO 77. CHANCE OF
PRECIPITATION 40 PERCENT.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS
AROUND 50.
MONDAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 68 TO 76. CHANCE OF
PRECIPITATION 40 PERCENT.
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