Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
011
FNUS55 KTFX 151944
FWFTFX
Fire Weather Planning Forecast for North-Central Montana
National Weather Service Great Falls MT
144 PM MDT Tue Sep 15 2026
.DISCUSSION...
Temperatures will moderate to near normal through the second half
of the work week as upper level flow becomes increasingly
southwesterly. As temperatures moderate through the end of the
work week the threat for showers and thunderstorms will return,
with showers and thunderstorms on Friday having the potential to
produce heavy rainfall in addition to the threat for strong and
erratic outflow winds. - Moldan
MTZ112-161030-
Eastern Glacier/Toole/Central/Eastern Pondera/Liberty-
144 PM MDT Tue Sep 15 2026
.TONIGHT...
* Sky/Weather...........Mostly cloudy. Chance of rain.
* Chance Lightning.......0 percent.
* Min Temperature.......40-45.
24 hr trend......7 degrees up.
* Max Humidity..........95-100 percent.
24 hr trend......Unchanged.
* Wind (20 FT).
Lower Elevations...Northeast winds 15 to 20 mph.
Ridges.............Northeast winds 15 to 20 mph.
* Mixing Height.........2000-3500 ft agl decreasing to 1000-1500 ft
agl early in the evening.
* Transport Winds.......Northeast 20 to 25 mph.
* CWR...................20 percent.
.WEDNESDAY...
* Sky/Weather...........Mostly sunny. Slight chance of rain in the
morning.
* Chance Lightning.......0 percent.
* Max Temperature.......56-62...50-55 higher elevations.
24 hr trend......2 degrees up.
* Min Humidity..........55-63 percent...64-74 percent higher
elevations.
24 hr trend......3 percent up...13 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...Northeast winds 5 to 10 mph.
Ridges.............North winds 5 to 10 mph.
* Mixing Height.........1500-3000 ft agl increasing to 4000-4500 ft
agl in the afternoon.
* Transport Winds.......North 10 to 15 mph.
* CWR...................0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather...........Mostly clear.
* Chance Lightning.......0 percent.
* Min Temperature.......39-44.
24 hr trend......3 degrees down.
* Max Humidity..........91-100 percent.
24 hr trend......Unchanged...7 percent down higher elevations.
* Wind (20 FT).
Lower Elevations...Southeast winds 10 to 15 mph.
Ridges.............Southeast winds 10 to 15 mph.
* Mixing Height.........2500-4000 ft agl decreasing to BELOW 1000
ft agl early in the evening.
* Transport Winds.......Southeast 15 to 20 mph.
* CWR...................0 percent.
.THURSDAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......66-71...60-65 higher elevations.
24 hr trend......8 degrees up.
* Min Humidity..........47-52 percent.
24 hr trend......6 percent down...16 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...Southeast winds 10 to 15 mph.
Ridges.............Southeast winds 10 to 15 mph.
* Mixing Height.........500-2000 ft agl increasing to 2500-3000 ft
agl in the afternoon.
* Transport Winds.......Southeast 15 to 20 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.FRIDAY...Partly cloudy. Chance of rain. Lows in the upper 40s.
Highs in the upper 60s. North winds around 5 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
West winds 10 to 15 mph.
.SUNDAY...Mostly clear. Lows in the upper 40s. Highs in the lower
70s. Southwest winds 15 to 20 mph.
.MONDAY...Mostly clear. Lows in the upper 40s. Highs in the lower
70s.
.TUESDAY...Partly cloudy. Lows in the upper 40s. Highs in the mid
60s.
$$
MTZ113-161030-
Hill and Blaine Counties-
144 PM MDT Tue Sep 15 2026
.TONIGHT...
* Sky/Weather...........Mostly cloudy. Slight chance of rain in the
evening. Chance of rain after midnight.
* Chance Lightning.......0 percent.
* Min Temperature.......41-46.
24 hr trend......7 degrees up.
* Max Humidity..........88-98 percent.
24 hr trend......Unchanged.
* Wind (20 FT).
Lower Elevations...East winds 15 to 20 mph.
Ridges.............East winds 15 to 20 mph.
* Mixing Height.........4000 ft agl decreasing to 500-2000 ft agl.
* Transport Winds.......East 20 to 25 mph.
* CWR...................10 percent.
.WEDNESDAY...
* Sky/Weather...........Partly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......61-66...54-59 higher elevations.
24 hr trend......1 degree down.
* Min Humidity..........45-55 percent.
24 hr trend......2 percent up.
* Wind (20 FT).
Lower Elevations...North winds 10 to 15 mph.
Ridges.............North winds 10 to 15 mph.
* Mixing Height.........1000-2000 ft agl increasing to 4500-5000 ft
agl.
* Transport Winds.......North 15 to 20 mph.
* CWR...................0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather...........Mostly clear.
* Chance Lightning.......0 percent.
* Min Temperature.......40-45.
24 hr trend......1 degree down.
* Max Humidity..........91-100 percent.
24 hr trend......Unchanged.
* Wind (20 FT).
Lower Elevations...East winds 5 to 10 mph.
Ridges.............East winds 5 to 10 mph shifting to the
southeast after midnight.
* Mixing Height.........4500 ft agl decreasing to 500-2000 ft agl.
* Transport Winds.......East 15 to 20 mph.
* CWR...................0 percent.
.THURSDAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......67-74...62-67 higher elevations.
24 hr trend......9 degrees up.
* Min Humidity..........42-50 percent.
24 hr trend......8 percent down.
* Wind (20 FT).
Lower Elevations...Southeast winds 15 to 20 mph.
Ridges.............Southeast winds 15 to 20 mph.
* Mixing Height.........500-2000 ft agl increasing to 2500-4000 ft
agl late in the morning.
* Transport Winds.......Southeast 20 to 25 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.FRIDAY...Partly cloudy. Slight chance of rain. Lows around 50.
Highs in the lower 70s. Northeast winds 15 to 20 mph.
.SATURDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the upper 60s.
North winds 10 to 15 mph.
.SUNDAY...Partly cloudy. Slight chance of rain. Lows in the upper
40s. Highs in the lower 70s. South winds around 5 mph.
.MONDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s.
.TUESDAY...Partly cloudy. Lows in the upper 40s. Highs in the
lower 70s.
$$
MTZ114-161030-
Lewis and Clark National Forest Rocky Mountain District-
Rocky Mountain Front-
144 PM MDT Tue Sep 15 2026
.TONIGHT...
* Sky/Weather...........Mostly cloudy. Slight chance of rain.
* Chance Lightning.......0 percent.
* Min Temperature.......41-46...35-41 higher elevations.
24 hr trend......6 degrees up.
* Max Humidity..........90-100 percent.
24 hr trend......Unchanged.
* Wind (20 FT).
Lower Elevations...North winds 10 to 15 mph.
Ridges.............North winds 10 to 15 mph.
* Mixing Height.........4000 ft agl decreasing to 1000-2000 ft agl.
* Transport Winds.......Northeast 15 to 20 mph.
* CWR...................0 percent.
.WEDNESDAY...
* Sky/Weather...........Partly sunny. Slight chance of rain in the
morning.
* Chance Lightning.......0 percent.
* Max Temperature.......57-62...46-55 higher elevations.
24 hr trend......1 degree down.
* Min Humidity..........54-64 percent...66-76 percent higher
elevations.
24 hr trend......6 percent up...18 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...Northeast winds 5 to 10 mph.
Ridges.............Northeast winds 5 to 10 mph shifting to
the east in the afternoon.
* Mixing Height.........1000-2500 ft agl increasing to 3000-4000 ft
agl in the afternoon.
* Transport Winds.......Northeast 10 to 15 mph.
* CWR...................0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather...........Partly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......37-44.
24 hr trend......Unchanged.
* Max Humidity..........87-97 percent.
24 hr trend......Unchanged.
* Wind (20 FT).
Lower Elevations...Southeast winds around 5 mph shifting to
the southwest after midnight.
Ridges.............Southeast winds 10 to 15 mph shifting to
the southwest after midnight.
* Mixing Height.........2000-3500 ft agl decreasing to BELOW 1000
ft agl early in the evening.
* Transport Winds.......East 15 to 20 mph shifting to the south
after midnight.
* CWR...................0 percent.
.THURSDAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......68-73...59-69 higher elevations.
24 hr trend......9 degrees up.
* Min Humidity..........41-51 percent.
24 hr trend......10 percent down...21 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...Southwest winds around 5 mph shifting to
the east in the afternoon.
Ridges.............Southwest winds 10 to 15 mph shifting to
the east in the afternoon.
* Mixing Height.........500-1500 ft agl increasing to 2500-4000 ft
agl in the afternoon.
* Transport Winds.......South 15 to 20 mph shifting to the
southeast in the afternoon.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.FRIDAY...Mostly cloudy. Showers likely and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the mid 60s.
Northwest winds 10 to 15 mph.
.SATURDAY...Mostly cloudy. Showers likely and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the mid 60s. West
winds 10 to 15 mph.
.SUNDAY...Mostly clear. Lows in the upper 40s. Highs in the upper
60s. Southwest winds 15 to 20 mph.
.MONDAY...Mostly clear. Lows in the upper 40s. Highs in the lower
70s.
.TUESDAY...Partly cloudy. Lows in the upper 40s. Highs in the mid
60s.
$$
MTZ115-161030-
Chouteau and Fergus Counties-
144 PM MDT Tue Sep 15 2026
.TONIGHT...
* Sky/Weather...........Mostly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......40-45.
24 hr trend......5 degrees up.
* Max Humidity..........86-96 percent.
24 hr trend......Unchanged...9 percent down higher elevations.
* Wind (20 FT).
Lower Elevations...Northeast winds 15 to 20 mph.
Ridges.............East winds 15 to 20 mph.
* Mixing Height.........5000 ft agl decreasing to 500-2000 ft agl.
* Transport Winds.......East 20 to 25 mph.
* CWR...................0 percent.
.WEDNESDAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......62-68...55-62 higher elevations.
24 hr trend......3 degrees down.
* Min Humidity..........44-54 percent.
24 hr trend......16 percent up...9 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...Northwest winds 15 to 20 mph.
Ridges.............Northwest winds 15 to 20 mph.
* Mixing Height.........500-2000 ft agl increasing to 4500 ft agl.
* Transport Winds.......Northwest 20 to 25 mph.
* CWR...................0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather...........Partly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......41-46.
24 hr trend......Unchanged.
* Max Humidity..........88-98 percent.
24 hr trend......Unchanged...10 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...East winds 10 to 15 mph.
Ridges.............East winds 10 to 15 mph shifting to the
southeast after midnight.
* Mixing Height.........4000 ft agl decreasing to 500-2000 ft agl.
* Transport Winds.......East 15 to 20 mph.
* CWR...................0 percent.
.THURSDAY...
* Sky/Weather...........Partly sunny then becoming sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......71-76...63-72 higher elevations.
24 hr trend......10 degrees up.
* Min Humidity..........37-46 percent.
24 hr trend......13 percent down.
* Wind (20 FT).
Lower Elevations...Southeast winds 15 to 20 mph.
Ridges.............Southeast winds 15 to 20 mph.
* Mixing Height.........500-2000 ft agl increasing to 2500-4000 ft
agl late in the morning.
* Transport Winds.......Southeast 20 to 25 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.FRIDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
West winds 15 to 20 mph.
.SATURDAY...Mostly cloudy. Showers and chance of thunderstorms.
Lows in the lower 50s. Highs in the upper 60s. Northwest winds
10 to 15 mph.
.SUNDAY...Partly cloudy. Slight chance of rain. Lows in the upper
40s. Highs in the lower 70s. Southwest winds 10 to 15 mph.
.MONDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s.
.TUESDAY...Partly cloudy. Lows around 50. Highs in the lower 70s.
$$
MTZ116-118-161030-
Lincoln Ranger District of the Helena National Forest-
Helena and Townsend Ranger Districts of the Helena National
Forest-
144 PM MDT Tue Sep 15 2026
.TONIGHT...
* Sky/Weather...........Partly cloudy then becoming mostly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......37-44.
24 hr trend......5 degrees up.
* Max Humidity..........87-97 percent.
24 hr trend......14 percent up...7 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...North winds 15 to 20 mph.
Ridges.............North winds 15 to 20 mph.
* Mixing Height.........4500 ft agl decreasing to 500-2000 ft agl.
* Transport Winds.......Northeast 20 to 25 mph.
* CWR...................0 percent.
.WEDNESDAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......60-70...52-62 higher elevations.
24 hr trend......Unchanged.
* Min Humidity..........40-50 percent...50-60 percent higher
elevations.
24 hr trend......11 percent up...16 percent up higher
elevations.
* 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 2500-3500 ft
agl late in the morning.
* Transport Winds.......North 15 to 20 mph.
* CWR...................0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather...........Partly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......38-45.
24 hr trend......3 degrees up.
* Max Humidity..........83-93 percent.
24 hr trend......15 percent down...10 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...North winds 15 to 20 mph shifting to the
east after midnight.
Ridges.............Northeast winds 15 to 20 mph shifting to
the southeast after midnight.
* Mixing Height.........1500-2500 ft agl decreasing to BELOW 1000
ft agl early in the evening.
* Transport Winds.......Northeast 20 to 25 mph shifting to the east
after midnight.
* CWR...................0 percent.
.THURSDAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......72-78...63-71 higher elevations.
24 hr trend......10 degrees up.
* Min Humidity..........37-47 percent.
24 hr trend......4 percent down...13 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...Southeast winds 5 to 10 mph.
Ridges.............Southeast winds 5 to 10 mph.
* Mixing Height.........500-1500 ft agl increasing to 4000-5500 ft
agl.
* Transport Winds.......South 15 to 20 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.FRIDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
West winds 10 to 15 mph.
.SATURDAY...Mostly cloudy. Showers likely and chance of
thunderstorms. Lows in the upper 40s. Highs in the mid 60s. West
winds 10 to 15 mph.
.SUNDAY...Mostly clear. Slight chance of rain. Lows in the mid
40s. Highs in the upper 60s. Southwest winds 10 to 15 mph.
.MONDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
70s.
.TUESDAY...Partly cloudy. Lows in the mid 40s. Highs in the upper
60s.
$$
MTZ117-161030-
Central and Eastern Lewis and Clark National Forest Areas-
144 PM MDT Tue Sep 15 2026
.TONIGHT...
* Sky/Weather...........Partly cloudy then becoming mostly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......36-43.
24 hr trend......2 degrees up.
* Max Humidity..........87-97 percent.
24 hr trend......7 percent up...13 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...Northeast winds 15 to 20 mph shifting to
the northwest after midnight.
Ridges.............Southeast winds 15 to 20 mph shifting to
the southwest after midnight.
* Mixing Height.........5000 ft agl decreasing to 500-2000 ft agl.
* Transport Winds.......East 20 to 25 mph shifting to the northwest
after midnight.
* CWR...................0 percent.
.WEDNESDAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......56-65.
24 hr trend......1 degree down.
* Min Humidity..........45-55 percent.
24 hr trend......12 percent up...6 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...North winds 15 to 20 mph.
Ridges.............North winds 15 to 20 mph.
* Mixing Height.........1000-2500 ft agl increasing to 3000-4000 ft
agl in the afternoon.
* Transport Winds.......North 20 to 25 mph.
* CWR...................0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather...........Partly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......38-43.
24 hr trend......3 degrees up.
* Max Humidity..........87-97 percent.
24 hr trend......Unchanged.
* Wind (20 FT).
Lower Elevations...East winds 15 to 20 mph shifting to the
south after midnight.
Ridges.............Southeast winds 15 to 20 mph.
* Mixing Height.........3500 ft agl decreasing to 500-1500 ft agl.
* Transport Winds.......East 20 to 25 mph shifting to the southeast
after midnight.
* CWR...................0 percent.
.THURSDAY...
* Sky/Weather...........Partly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......71-76...64-72 higher elevations.
24 hr trend......10 degrees up.
* Min Humidity..........36-45 percent.
24 hr trend......6 percent down.
* Wind (20 FT).
Lower Elevations...South winds 15 to 20 mph shifting to the
east in the afternoon.
Ridges.............South winds 15 to 20 mph.
* Mixing Height.........500-2000 ft agl increasing to 4000-5500 ft
agl.
* Transport Winds.......Southeast 20 to 25 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.FRIDAY...Mostly cloudy. Showers and slight chance of
thunderstorms. Lows around 50. Highs in the upper 60s. Southwest
winds 15 to 20 mph.
.SATURDAY...Mostly cloudy. Showers likely and chance of
thunderstorms. Lows in the upper 40s. Highs in the mid 60s. West
winds 10 to 15 mph.
.SUNDAY...Partly cloudy. Slight chance of rain. Lows in the mid
40s. Highs in the upper 60s. Southwest winds 10 to 15 mph.
.MONDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
70s.
.TUESDAY...Partly cloudy. Lows in the upper 40s. Highs in the
upper 60s.
$$
weather.gov/greatfalls