510
FPUS55 KBOI 190831
ZFPBOI
ZONE FORECASTS FOR SOUTHWEST IDAHO/SOUTHEAST OREGON
NATIONAL WEATHER SERVICE BOISE ID
230 AM MDT SAT SEP 19 2026
SPOT TEMPERATURES ARE FOR TODAY, TONIGHT, AND SUNDAY.
IDZ011-191600-
WEST CENTRAL MOUNTAINS-
230 AM MDT SAT SEP 19 2026
TODAY
AREAS OF FOG THIS MORNING. PARTLY CLOUDY WITH SCATTERED
RAIN SHOWERS. ISOLATED THUNDERSTORMS THIS AFTERNOON. CHANCE OF
RAIN 30 PERCENT. HIGHS 61 TO 74.
TONIGHT
PARTLY CLOUDY. AREAS OF FOG AFTER MIDNIGHT. LOWS 39 TO
50.
SUNDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 66 TO
79.
SUNDAY NIGHT
MOSTLY CLEAR. PATCHY FOG AFTER MIDNIGHT. LOWS
41 TO 51.
MONDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 68 TO 81.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 43 TO 53.
TUESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 67 TO 81. LOWS
43 TO 53.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 43 TO 53. HIGHS
65 TO 78.
TEMPERATURE
MCCALL 67 39 73
=
IDZ013-191600-
BOISE MOUNTAINS-
230 AM MDT SAT SEP 19 2026
TODAY
AREAS OF FOG THIS MORNING. PARTLY CLOUDY WITH SCATTERED
RAIN SHOWERS. ISOLATED THUNDERSTORMS THIS AFTERNOON. CHANCE OF
RAIN 30 PERCENT. HIGHS 60 TO 75.
TONIGHT
DECREASING CLOUDS. PATCHY FOG IN THE EVENING. AREAS OF
FOG AFTER MIDNIGHT. LOWS 36 TO 51.
SUNDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 66 TO
80.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 36 TO 51.
MONDAY
SUNNY. HIGHS 69 TO 83.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS 38 TO
53. HIGHS 70 TO 84.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 71 TO 86. LOWS
38 TO 53.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 39 TO 54. HIGHS
69 TO 84.
TEMPERATURE
IDAHO CITY 73 40 79
=
IDZ028-191600-
CAMAS PRAIRIE-
230 AM MDT SAT SEP 19 2026
TODAY
AREAS OF FOG THIS MORNING. PARTLY CLOUDY WITH SCATTERED
RAIN SHOWERS. ISOLATED THUNDERSTORMS THIS AFTERNOON. CHANCE OF
RAIN 30 PERCENT. HIGHS 63 TO 68. SOUTHWEST WINDS 10 TO 15 MPH.
TONIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT.
AREAS OF FOG AFTER MIDNIGHT. CHANCE OF RAIN 20 PERCENT. LOWS
35 TO 40. SOUTH WINDS UP TO 10 MPH.
SUNDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 69 TO 74.
SOUTHEAST WINDS UP TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 38 TO 43. SOUTH WINDS UP TO
10 MPH.
MONDAY
SUNNY. HIGHS 73 TO 78. EAST WINDS UP TO 10 MPH. GUSTS
TO 20 MPH IN THE AFTERNOON.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS 40 TO
46. HIGHS 74 TO 79.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 75 TO 81. LOWS
41 TO 47.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS
76 TO 81.
TEMPERATURE
FAIRFIELD 66 35 71
=
IDZ033-191600-
UPPER WEISER RIVER-
230 AM MDT SAT SEP 19 2026
TODAY
PARTLY SUNNY THIS MORNING, THEN CLEARING. HIGHS 73 TO
79. NORTH WINDS UP TO 10 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 49 TO 54. NORTH WINDS UP TO 10 MPH.
SUNDAY
SUNNY. HIGHS 75 TO 82. LIGHT WINDS.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 50 TO 55. LIGHT WINDS.
MONDAY
SUNNY. HIGHS 77 TO 84. LIGHT WINDS.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 52 TO 57.
TUESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 79 TO 85. LOWS
52 TO 57.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 52 TO 57. HIGHS
77 TO 82.
TEMPERATURE
COUNCIL 78 50 81
CAMBRIDGE 79 49 81
=
ORZ064-191600-
OREGON LOWER TREASURE VALLEY-
230 AM MDT SAT SEP 19 2026 /130 AM PDT SAT SEP 19 2026/
TODAY
MOSTLY SUNNY. HIGHS 79 TO 84. NORTHWEST WINDS UP TO
10 MPH.
TONIGHT
INCREASING CLOUDS. LOWS 49 TO 54. LIGHT WINDS.
SUNDAY
SUNNY. HIGHS 79 TO 84. LIGHT WINDS.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 48 TO 53. LIGHT WINDS.
MONDAY
SUNNY. HIGHS 81 TO 86. LIGHT WINDS.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 51 TO 56.
TUESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 82 TO 87. LOWS
50 TO 57.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS
80 TO 85.
TEMPERATURE
ONTARIO 81 49 82
=
IDZ012-191600-
LOWER TREASURE VALLEY-
230 AM MDT SAT SEP 19 2026
TODAY
PARTLY SUNNY THIS MORNING, THEN CLEARING. AREAS OF FOG
THIS MORNING. HIGHS 76 TO 81. NORTHWEST WINDS UP TO 10 MPH WITH
GUSTS TO 20 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 48 TO 53. NORTHEAST WINDS UP TO
10 MPH.
SUNDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 79 TO 84.
SOUTHEAST WINDS UP TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 49 TO 54. LIGHT WINDS.
MONDAY
SUNNY. HIGHS 81 TO 86. EAST WINDS UP TO 10 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 51 TO 56.
TUESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 82 TO 88. LOWS
51 TO 56.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 52 TO 57. HIGHS
80 TO 85.
TEMPERATURE
CALDWELL 78 49 81
=
IDZ014-191600-
UPPER TREASURE VALLEY-
230 AM MDT SAT SEP 19 2026
TODAY
AREAS OF FOG THIS MORNING. PARTLY CLOUDY WITH SCATTERED
SHOWERS THIS MORNING, THEN SUNNY THIS AFTERNOON. CHANCE OF RAIN
30 PERCENT. HIGHS 72 TO 77. NORTHWEST WINDS 10 TO 15 MPH.
TONIGHT
MOSTLY CLEAR. AREAS OF FOG AFTER MIDNIGHT. LOWS 46 TO
54. NORTHWEST WINDS 10 TO 15 MPH IN THE EVENING, SHIFTING TO EAST
AFTER MIDNIGHT.
SUNDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 77 TO 82.
SOUTHEAST WINDS UP TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. PATCHY FOG AFTER MIDNIGHT. LOWS
48 TO 56. NORTHWEST WINDS UP TO 10 MPH IN THE EVENING, SHIFTING
TO EAST AFTER MIDNIGHT.
MONDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 82 TO 87.
SOUTHEAST WINDS 10 TO 15 MPH.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS 50 TO
58. HIGHS 81 TO 86.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 83 TO 90. LOWS
51 TO 58. BREEZY.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 51 TO 59. HIGHS
83 TO 88. BREEZY.
TEMPERATURE
BOISE 76 54 80
MOUNTAIN HOME 75 47 80
=
IDZ016-191600-
WESTERN MAGIC VALLEY-
230 AM MDT SAT SEP 19 2026
TODAY
PARTLY SUNNY. AREAS OF FOG THIS MORNING. SCATTERED RAIN
SHOWERS THIS MORNING, THEN ISOLATED RAIN SHOWERS AND
THUNDERSTORMS THIS AFTERNOON. CHANCE OF RAIN 30 PERCENT. HIGHS
66 TO 71. WEST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
TONIGHT
MOSTLY CLEAR. PATCHY FOG. LOWS 43 TO 48. SOUTH WINDS
AROUND 10 MPH.
SUNDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 72 TO 77. EAST
WINDS UP TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 46 TO 51. EAST WINDS AROUND
10 MPH.
MONDAY
SUNNY. HIGHS 78 TO 83. EAST WINDS 10 TO 15 MPH.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS 48 TO
55. HIGHS 77 TO 82.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 79 TO 86. LOWS
49 TO 54.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS
80 TO 85.
TEMPERATURE
JEROME 67 45 73
TWIN FALLS 68 45 74
=
IDZ029-191600-
OWYHEE MOUNTAINS-
230 AM MDT SAT SEP 19 2026
TODAY
MOSTLY SUNNY. HIGHS 68 TO 73.
TONIGHT
MOSTLY CLEAR. LOWS 44 TO 54.
SUNDAY
MOSTLY SUNNY. HIGHS 72 TO 78.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
46 TO 54.
MONDAY
MOSTLY SUNNY. HIGHS 74 TO 82.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS 48 TO
57. HIGHS 75 TO 82.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 77 TO 85. LOWS
50 TO 57.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 50 TO 57. HIGHS
75 TO 81.
=
IDZ015-191600-
SOUTHWEST HIGHLANDS-
230 AM MDT SAT SEP 19 2026
TODAY
PARTLY SUNNY. HIGHS 65 TO 71.
TONIGHT
MOSTLY CLEAR. LOWS 41 TO 47.
SUNDAY
MOSTLY SUNNY. HIGHS 73 TO 78.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
PATCHY FOG AFTER MIDNIGHT. LOWS 46 TO 51.
MONDAY
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 77 TO
82.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS 47 TO
54. HIGHS 76 TO 81.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 79 TO 86. LOWS
48 TO 54.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 49 TO 54. HIGHS
78 TO 83. BREEZY.
=
IDZ030-191600-
SOUTHERN TWIN FALLS COUNTY-
230 AM MDT SAT SEP 19 2026
TODAY
DECREASING CLOUDS. SCATTERED RAIN SHOWERS. ISOLATED
THUNDERSTORMS THIS AFTERNOON. CHANCE OF RAIN 40 PERCENT. HIGHS
65 TO 70.
TONIGHT
MOSTLY CLEAR. LOWS 41 TO 46.
SUNDAY
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 72 TO
77.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
44 TO 49.
MONDAY
SUNNY. HIGHS 77 TO 82.
MONDAY NIGHT
INCREASING CLOUDS. LOWS 49 TO 54.
TUESDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. CHANCE OF RAIN 20 PERCENT. HIGHS
76 TO 81.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS 48 TO 53.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 78 TO 85. LOWS
49 TO 54. BREEZY.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS
79 TO 84. BREEZY.
=
ORZ062-191600-
BAKER COUNTY-
130 AM PDT SAT SEP 19 2026
TODAY
AREAS OF FOG THIS MORNING. SUNNY. HIGHS 72 TO 79.
NORTHWEST WINDS UP TO 10 MPH.
TONIGHT
INCREASING CLOUDS. LOWS 40 TO 51. NORTHWEST WINDS UP
TO 10 MPH.
SUNDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 75 TO 82.
SOUTHEAST WINDS UP TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 42 TO 53. LIGHT WINDS.
MONDAY
SUNNY. HIGHS 76 TO 84. SOUTHEAST WINDS UP TO 10 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 43 TO 54.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLEAR. HIGHS 76 TO 84. LOWS
43 TO 54.
WEDNESDAY NIGHT
INCREASING CLOUDS. LOWS 41 TO 53.
THURSDAY
SUNNY. HIGHS 75 TO 83.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 41 TO 53. HIGHS
71 TO 80.
TEMPERATURE
BAKER CITY 77 40 79
=
ORZ061-191600-
HARNEY COUNTY-
130 AM PDT SAT SEP 19 2026
TODAY
PATCHY FOG THIS MORNING. SUNNY. HIGHS 68 TO 77. WEST
WINDS UP TO 10 MPH.
TONIGHT
INCREASING CLOUDS. LOWS 36 TO 46. SOUTHEAST WINDS UP
TO 10 MPH IN THE EVENING, BECOMING LIGHT AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. HIGHS 71 TO 79. LIGHT WINDS IN THE
MORNING, BECOMING EAST AROUND 10 MPH IN THE AFTERNOON.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
39 TO 49. NORTHEAST WINDS UP TO 10 MPH.
MONDAY
MOSTLY SUNNY. HIGHS 73 TO 81. NORTHEAST WINDS UP TO
10 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 41 TO 51.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLEAR. HIGHS 74 TO 83. LOWS
41 TO 51.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 40 TO 51.
THURSDAY
SUNNY. HIGHS 75 TO 84.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 40 TO 51. HIGHS
72 TO 79.
TEMPERATURE
BURNS 77 37 79
=
ORZ063-191600-
MALHEUR COUNTY-
230 AM MDT SAT SEP 19 2026 /130 AM PDT SAT SEP 19 2026/
TODAY
SUNNY. HIGHS 73 TO 80. NORTHWEST WINDS UP TO 10 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 42 TO 52. NORTHEAST WINDS UP TO
10 MPH IN THE EVENING, BECOMING LIGHT AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. HIGHS 76 TO 82. EAST WINDS UP TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
44 TO 53. EAST WINDS UP TO 10 MPH.
MONDAY
SUNNY. HIGHS 78 TO 83. EAST WINDS UP TO 10 MPH.
MONDAY NIGHT AND TUESDAY
PARTLY CLOUDY. LOWS 46 TO 55. HIGHS
80 TO 85.
TUESDAY NIGHT THROUGH THURSDAY
MOSTLY CLEAR. LOWS 46 TO 56.
HIGHS 80 TO 87.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 47 TO 56. HIGHS
76 TO 83.
=
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