320
FNUS55 KTFX 160717
FWFTFX
FIRE WEATHER PLANNING FORECAST FOR NORTH-CENTRAL MONTANA
NATIONAL WEATHER SERVICE GREAT FALLS MT
ISSUED BY NATIONAL WEATHER SERVICE GLASGOW MT
117 AM MDT TUE SEP 16 2025
DISCUSSION
SHOWERS AND A FEW THUNDERSTORMS CONTINUE THROUGH TODAY, MOST
FAVORED IN SOUTHERN AND SOUTHEASTERN DISTRICTS. THESE SHOWERS MOVE
AWAY TONIGHT, RESULTING IN A DRY PERIOD WITH MILD TEMPERATURES
WEDNESDAY THROUGH AT LEAST FRIDAY. UNCERTAINTY INCREASES TOWARD
THE WEEKEND, THOUGH A BREEZY PERIOD IS BECOMING INCREASINGLY
LIKELY TOWARD THE LATTER HALF OF THE WEEKEND OVER THE PLAINS. -AM
MTZ112-162230-
EASTERN GLACIER/TOOLE/CENTRAL/EASTERN PONDERA/LIBERTY-
117 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* CHANCE LIGHTNING.......0 PERCENT.
* MAX TEMPERATURE.......70-76...63-68 HIGHER ELEVATIONS.
24 HR TREND......3 DEGREES UP...8 DEGREES UP HIGHER ELEVATIONS.
* MIN HUMIDITY..........35-45 PERCENT.
24 HR TREND......18 PERCENT DOWN.
* WIND (20 FT).
LOWER ELEVATIONS...NORTH WINDS 5 TO 15 MPH.
RIDGES.............NORTH WINDS 5 TO 15 MPH.
* MIXING HEIGHT.........500-2000 FT AGL INCREASING TO 5500-6500 FT
AGL.
* TRANSPORT WINDS.......NORTH 10 TO 15 MPH.
* CWR...................0 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* CHANCE LIGHTNING.......0 PERCENT.
* MIN TEMPERATURE.......43-49.
24 HR TREND......6 DEGREES DOWN.
* MAX HUMIDITY..........71-81 PERCENT.
24 HR TREND......12 PERCENT DOWN...46 PERCENT DOWN HIGHER
ELEVATIONS.
* WIND (20 FT).
LOWER ELEVATIONS...EAST WINDS AROUND 5 MPH SHIFTING TO THE
WEST AFTER MIDNIGHT.
RIDGES.............NORTHEAST WINDS 10 TO 15 MPH SHIFTING TO
THE SOUTHEAST AFTER MIDNIGHT.
* MIXING HEIGHT.........6000 FT AGL DECREASING TO 500-2000 FT AGL.
* TRANSPORT WINDS.......NORTHEAST 10 TO 15 MPH SHIFTING TO THE
SOUTHEAST AFTER MIDNIGHT.
* CWR...................0 PERCENT.
WEDNESDAY
* SKY/WEATHER...........SUNNY.
* CHANCE LIGHTNING.......0 PERCENT.
* MAX TEMPERATURE.......74-79...68-74 HIGHER ELEVATIONS.
24 HR TREND......2 DEGREES UP...7 DEGREES UP HIGHER ELEVATIONS.
* MIN HUMIDITY..........28-33 PERCENT.
24 HR TREND......8 PERCENT DOWN...14 PERCENT DOWN HIGHER
ELEVATIONS.
* WIND (20 FT).
LOWER ELEVATIONS...SOUTH WINDS 10 TO 15 MPH.
RIDGES.............SOUTH WINDS 10 TO 15 MPH.
* MIXING HEIGHT.........500-1500 FT AGL INCREASING TO 5000-6000 FT
AGL.
* TRANSPORT WINDS.......SOUTHEAST 5 TO 10 MPH.
* CWR...................0 PERCENT.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER 70S.
SOUTHEAST WINDS 10 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID
70S. SOUTHEAST WINDS 10 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS AROUND
80. SOUTHWEST WINDS 15 TO 20 MPH.
SUNDAY
PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE
LOWER 70S.
MONDAY
PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE UPPER
60S.
MTZ113-162230-
HILL AND BLAINE COUNTIES-
117 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* CHANCE LIGHTNING.......0 PERCENT.
* MAX TEMPERATURE.......73-78...64-69 HIGHER ELEVATIONS.
24 HR TREND......UNCHANGED.
* MIN HUMIDITY..........37-47 PERCENT...47-54 PERCENT HIGHER
ELEVATIONS.
24 HR TREND......UNCHANGED.
* WIND (20 FT).
LOWER ELEVATIONS...NORTH WINDS 10 TO 15 MPH.
RIDGES.............NORTH WINDS 10 TO 15 MPH.
* MIXING HEIGHT.........500-2000 FT AGL INCREASING TO 6000-6500 FT
AGL.
* TRANSPORT WINDS.......NORTH 10 TO 15 MPH.
* CWR...................0 PERCENT.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* CHANCE LIGHTNING.......0 PERCENT.
* MIN TEMPERATURE.......43-51.
24 HR TREND......8 DEGREES DOWN.
* MAX HUMIDITY..........74-84 PERCENT.
24 HR TREND......8 PERCENT DOWN...23 PERCENT DOWN HIGHER
ELEVATIONS.
* WIND (20 FT).
LOWER ELEVATIONS...NORTH WINDS AROUND 5 MPH.
RIDGES.............NORTHEAST WINDS AROUND 5 MPH SHIFTING TO
THE EAST AFTER MIDNIGHT.
* MIXING HEIGHT.........5500 FT AGL DECREASING TO 500-1000 FT AGL.
* TRANSPORT WINDS.......NORTHEAST 10 TO 15 MPH.
* CWR...................0 PERCENT.
WEDNESDAY
* SKY/WEATHER...........SUNNY.
* CHANCE LIGHTNING.......0 PERCENT.
* MAX TEMPERATURE.......73-78...65-70 HIGHER ELEVATIONS.
24 HR TREND......1 DEGREE DOWN.
* MIN HUMIDITY..........31-38 PERCENT.
24 HR TREND......12 PERCENT DOWN.
* WIND (20 FT).
LOWER ELEVATIONS...EAST WINDS AROUND 5 MPH.
RIDGES.............EAST WINDS AROUND 5 MPH.
* MIXING HEIGHT.........500-2000 FT AGL INCREASING TO 5000-6000 FT
AGL.
* TRANSPORT WINDS.......NORTHEAST AROUND 5 MPH.
* CWR...................0 PERCENT.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID
70S. EAST WINDS 10 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID
70S. SOUTHEAST WINDS 10 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS IN THE
LOWER 80S. SOUTHEAST WINDS 10 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE MID
70S.
MONDAY
PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS IN THE
UPPER 60S.
MTZ114-162230-
LEWIS AND CLARK NATIONAL FOREST ROCKY MOUNTAIN DISTRICT-
ROCKY MOUNTAIN FRONT-
117 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE
MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON.
* CHANCE LIGHTNING.......20 PERCENT.
* MAX TEMPERATURE.......68-73...55-64 HIGHER ELEVATIONS.
24 HR TREND......1 DEGREE UP.
* MIN HUMIDITY..........44-51 PERCENT...55-65 PERCENT HIGHER
ELEVATIONS.
24 HR TREND......6 PERCENT UP.
* WIND (20 FT).
LOWER ELEVATIONS...NORTHEAST WINDS 10 TO 15 MPH.
RIDGES.............NORTHEAST WINDS 10 TO 15 MPH SHIFTING TO
THE EAST IN THE AFTERNOON.
* MIXING HEIGHT.........1000-2000 FT AGL INCREASING TO 5500 FT AGL.
* TRANSPORT WINDS.......NORTHEAST 10 TO 15 MPH.
* CWR...................10 PERCENT.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* CHANCE LIGHTNING.......0 PERCENT.
* MIN TEMPERATURE.......42-49.
24 HR TREND......6 DEGREES DOWN.
* MAX HUMIDITY..........77-87 PERCENT.
24 HR TREND......2 PERCENT DOWN...14 PERCENT DOWN HIGHER
ELEVATIONS.
* WIND (20 FT).
LOWER ELEVATIONS...NORTHEAST WINDS AROUND 5 MPH SHIFTING TO
THE WEST AFTER MIDNIGHT.
RIDGES.............SOUTHEAST WINDS AROUND 5 MPH.
* MIXING HEIGHT.........5500 FT AGL DECREASING TO 1000-2000 FT AGL.
* TRANSPORT WINDS.......EAST AROUND 5 MPH SHIFTING TO THE SOUTHWEST
AFTER MIDNIGHT.
* CWR...................0 PERCENT.
WEDNESDAY
* SKY/WEATHER...........SUNNY.
* CHANCE LIGHTNING.......0 PERCENT.
* MAX TEMPERATURE.......74-79...62-71 HIGHER ELEVATIONS.
24 HR TREND......7 DEGREES UP.
* MIN HUMIDITY..........27-32 PERCENT...32-42 PERCENT HIGHER
ELEVATIONS.
24 HR TREND......17 PERCENT DOWN...26 PERCENT DOWN HIGHER
ELEVATIONS.
* WIND (20 FT).
LOWER ELEVATIONS...SOUTHWEST WINDS AROUND 5 MPH SHIFTING TO
THE SOUTHEAST IN THE AFTERNOON.
RIDGES.............SOUTH WINDS 10 TO 15 MPH.
* MIXING HEIGHT.........1000-2000 FT AGL INCREASING TO 5000-5500 FT
AGL.
* TRANSPORT WINDS.......SOUTH AROUND 5 MPH SHIFTING TO THE
SOUTHEAST IN THE AFTERNOON.
* CWR...................0 PERCENT.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID
70S. SOUTH WINDS 10 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE MID
70S. SOUTH WINDS 10 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS IN THE
MID 70S. SOUTHWEST WINDS 20 TO 25 MPH.
SUNDAY
COOLER. PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN
THE MID 60S.
MONDAY
PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE MID
60S.
MTZ115-162230-
CHOUTEAU AND FERGUS COUNTIES-
117 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY. CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS.
* CHANCE LIGHTNING.......20 PERCENT.
* MAX TEMPERATURE.......68-77...60-65 HIGHER ELEVATIONS.
24 HR TREND......UNCHANGED...6 DEGREES DOWN HIGHER ELEVATIONS.
* MIN HUMIDITY..........45-55 PERCENT...60-70 PERCENT HIGHER
ELEVATIONS.
24 HR TREND......8 PERCENT UP...31 PERCENT UP HIGHER ELEVATIONS.
* WIND (20 FT).
LOWER ELEVATIONS...NORTHWEST WINDS 15 TO 20 MPH SHIFTING TO
THE NORTH IN THE AFTERNOON.
RIDGES.............NORTHWEST WINDS 15 TO 20 MPH BECOMING NORTH
AROUND 5 MPH IN THE AFTERNOON.
* MIXING HEIGHT.........500-2000 FT AGL INCREASING TO 5000-6000 FT
AGL.
* TRANSPORT WINDS.......NORTH 10 TO 15 MPH.
* CWR...................20 PERCENT.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* CHANCE LIGHTNING.......0 PERCENT.
* MIN TEMPERATURE.......46-52.
24 HR TREND......3 DEGREES DOWN.
* MAX HUMIDITY..........77-87 PERCENT.
24 HR TREND......1 PERCENT DOWN.
* WIND (20 FT).
LOWER ELEVATIONS...NORTHEAST WINDS AROUND 5 MPH SHIFTING TO
THE WEST AFTER MIDNIGHT.
RIDGES.............NORTH WINDS AROUND 5 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
* MIXING HEIGHT.........5000 FT AGL DECREASING TO 500-1500 FT AGL.
* TRANSPORT WINDS.......NORTHWEST AROUND 5 MPH.
* CWR...................0 PERCENT.
WEDNESDAY
* SKY/WEATHER...........SUNNY.
* CHANCE LIGHTNING.......0 PERCENT.
* MAX TEMPERATURE.......73-79...64-70 HIGHER ELEVATIONS.
24 HR TREND......2 DEGREES UP.
* MIN HUMIDITY..........32-40 PERCENT...39-49 PERCENT HIGHER
ELEVATIONS.
24 HR TREND......10 PERCENT DOWN...22 PERCENT DOWN HIGHER
ELEVATIONS.
* WIND (20 FT).
LOWER ELEVATIONS...SOUTHWEST WINDS AROUND 5 MPH SHIFTING TO
THE EAST IN THE AFTERNOON.
RIDGES.............SOUTHWEST WINDS AROUND 5 MPH SHIFTING TO
THE EAST IN THE AFTERNOON.
* MIXING HEIGHT.........500-2000 FT AGL INCREASING TO 5500-6500 FT
AGL.
* TRANSPORT WINDS.......SOUTHWEST AROUND 5 MPH SHIFTING TO THE
NORTHEAST IN THE AFTERNOON.
* CWR...................0 PERCENT.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE
UPPER 70S. SOUTHEAST WINDS 10 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER
70S. SOUTHEAST WINDS 10 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS AROUND 50. HIGHS IN THE LOWER
80S. SOUTH WINDS 10 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE UPPER
70S.
MONDAY
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE LOWER 70S.
MTZ116-118-162230-
LINCOLN RANGER DISTRICT OF THE HELENA NATIONAL FOREST-
HELENA AND TOWNSEND RANGER DISTRICTS OF THE HELENA NATIONAL
FOREST-
117 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY. CHANCE OF RAIN IN THE
MORNING, THEN CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
* CHANCE LIGHTNING.......20 PERCENT.
* MAX TEMPERATURE.......63-71...54-63 HIGHER ELEVATIONS.
24 HR TREND......3 DEGREES DOWN.
* MIN HUMIDITY..........55-65 PERCENT.
24 HR TREND......3 PERCENT DOWN...6 PERCENT UP HIGHER
ELEVATIONS.
* WIND (20 FT).
LOWER ELEVATIONS...NORTH WINDS 10 TO 15 MPH.
RIDGES.............NORTH WINDS 10 TO 15 MPH.
* MIXING HEIGHT.........1000-2500 FT AGL INCREASING TO 4500-5000 FT
AGL.
* TRANSPORT WINDS.......NORTH 5 TO 10 MPH.
* CWR...................20 PERCENT.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* CHANCE LIGHTNING.......0 PERCENT.
* MIN TEMPERATURE.......43-49.
24 HR TREND......3 DEGREES DOWN.
* MAX HUMIDITY..........83-93 PERCENT.
24 HR TREND......UNCHANGED...9 PERCENT DOWN HIGHER ELEVATIONS.
* WIND (20 FT).
LOWER ELEVATIONS...EAST WINDS 5 TO 10 MPH.
RIDGES.............EAST WINDS 5 TO 10 MPH.
* MIXING HEIGHT.........2000-3500 FT AGL DECREASING TO 1000-1500 FT
AGL EARLY IN THE EVENING.
* TRANSPORT WINDS.......NORTHEAST AROUND 5 MPH.
* CWR...................0 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* CHANCE LIGHTNING.......0 PERCENT.
* MAX TEMPERATURE.......68-76...60-70 HIGHER ELEVATIONS.
24 HR TREND......9 DEGREES UP.
* MIN HUMIDITY..........33-43 PERCENT.
24 HR TREND......24 PERCENT DOWN.
* WIND (20 FT).
LOWER ELEVATIONS...SOUTHEAST WINDS AROUND 5 MPH.
RIDGES.............SOUTHEAST WINDS AROUND 5 MPH.
* MIXING HEIGHT.........1000-2500 FT AGL INCREASING TO 5000-6000 FT
AGL.
* TRANSPORT WINDS.......EAST AROUND 5 MPH.
* CWR...................0 PERCENT.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S.
SOUTHEAST WINDS 10 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID
70S. SOUTHEAST WINDS 10 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS IN THE
MID 70S. SOUTHWEST WINDS 10 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS IN THE
UPPER 60S.
MONDAY
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER
60S.
MTZ117-162230-
CENTRAL AND EASTERN LEWIS AND CLARK NATIONAL FOREST AREAS-
117 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY. CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS.
* CHANCE LIGHTNING.......20 PERCENT.
* MAX TEMPERATURE.......64-74...53-63 HIGHER ELEVATIONS.
24 HR TREND......10 DEGREES DOWN.
* MIN HUMIDITY..........47-57 PERCENT...61-71 PERCENT HIGHER
ELEVATIONS.
24 HR TREND......22 PERCENT UP...12 PERCENT UP HIGHER
ELEVATIONS.
* WIND (20 FT).
LOWER ELEVATIONS...NORTH WINDS 10 TO 15 MPH.
RIDGES.............NORTH WINDS 10 TO 15 MPH SHIFTING TO THE
NORTHEAST IN THE AFTERNOON.
* MIXING HEIGHT.........1000-2000 FT AGL INCREASING TO 4000-5000 FT
AGL.
* TRANSPORT WINDS.......NORTH 10 TO 15 MPH.
* CWR...................30 PERCENT.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN IN THE
EVENING.
* CHANCE LIGHTNING.......0 PERCENT.
* MIN TEMPERATURE.......41-49.
24 HR TREND......4 DEGREES DOWN.
* MAX HUMIDITY..........82-92 PERCENT.
24 HR TREND......16 PERCENT DOWN.
* WIND (20 FT).
LOWER ELEVATIONS...EAST WINDS 10 TO 15 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
RIDGES.............NORTHEAST WINDS 5 TO 10 MPH.
* MIXING HEIGHT.........3500 FT AGL DECREASING TO 1000-1500 FT AGL.
* TRANSPORT WINDS.......NORTHEAST AROUND 5 MPH SHIFTING TO THE
NORTHWEST AFTER MIDNIGHT.
* CWR...................0 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* CHANCE LIGHTNING.......0 PERCENT.
* MAX TEMPERATURE.......70-78...60-70 HIGHER ELEVATIONS.
24 HR TREND......15 DEGREES UP.
* MIN HUMIDITY..........33-43 PERCENT.
24 HR TREND......22 PERCENT DOWN.
* WIND (20 FT).
LOWER ELEVATIONS...SOUTH WINDS AROUND 5 MPH SHIFTING TO THE
EAST IN THE AFTERNOON.
RIDGES.............EAST WINDS 5 TO 10 MPH.
* MIXING HEIGHT.........500-1000 FT AGL INCREASING TO 4500-6000 FT
AGL.
* TRANSPORT WINDS.......SOUTHEAST AROUND 5 MPH SHIFTING TO THE
NORTHEAST IN THE AFTERNOON.
* CWR...................0 PERCENT.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER
70S. SOUTHEAST WINDS 10 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID
70S. SOUTHEAST WINDS 10 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS IN THE
UPPER 70S. SOUTHWEST WINDS 15 TO 20 MPH.
SUNDAY
PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS AROUND 70.
MONDAY
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER
60S.
WEATHER.GOV/GREATFALLS
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page