Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
325
FNUS55 KTFX 200917
FWFTFX
Fire Weather Planning Forecast for North-Central Montana
National Weather Service Great Falls MT
317 AM MDT Sun Sep 20 2026
.DISCUSSION...
Clouds decrease today as upper level high pressure rebuilds
across the Northern Rockies and Montana. Stable conditions with
light winds and seasonable temperatures are expected this
afternoon. Temperatures warm above seasonal averages for much of
the week ahead with mainly dry conditions and general winds from
the southwest.
MTZ112-202345-
Eastern Glacier/Toole/Central/Eastern Pondera/Liberty-
317 AM MDT Sun Sep 20 2026
.TODAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......69-74...63-69 higher elevations.
24 hr trend......3 degrees up.
* Min Humidity..........33-43 percent.
24 hr trend......4 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.........500-1000 ft agl increasing to 4500-5500 ft
agl.
* Transport Winds.......South 15 to 20 mph.
* CWR...................0 percent.
.TONIGHT...
* Sky/Weather...........Partly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......43-48.
24 hr trend......2 degrees up.
* Max Humidity..........82-92 percent...71-81 percent higher
elevations.
24 hr trend......10 percent up...6 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...South winds 15 to 20 mph.
Ridges.............South winds 15 to 20 mph.
* Mixing Height.........4000 ft agl decreasing to 500-1000 ft agl.
* Transport Winds.......South 20 to 25 mph.
* CWR...................0 percent.
.MONDAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......73-78...65-71 higher elevations.
24 hr trend......4 degrees up.
* Min Humidity..........28-38 percent.
24 hr trend......9 percent down.
* Wind (20 FT).
Lower Elevations...South winds 10 to 15 mph.
Ridges.............South winds 10 to 15 mph.
* Mixing Height.........500-2000 ft agl increasing to 4500-5500 ft
agl.
* Transport Winds.......South 20 to 25 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.TUESDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s. Southwest winds 15 to 20 mph.
.WEDNESDAY...Partly cloudy. Lows in the upper 40s. Highs in the
lower 70s. Southwest winds 15 to 20 mph.
.THURSDAY...Partly cloudy. Lows in the upper 40s. Highs around
70. West winds 15 to 20 mph.
.FRIDAY...Partly cloudy. Lows in the upper 40s. Highs in the
lower 70s.
.SATURDAY...Cooler. Mostly cloudy. Slight chance of rain. Lows in
the mid 40s. Highs in the upper 50s.
$$
MTZ113-202345-
Hill and Blaine Counties-
317 AM MDT Sun Sep 20 2026
.TODAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......65-72...59-64 higher elevations.
24 hr trend......2 degrees up.
* Min Humidity..........51-61 percent.
24 hr trend......2 percent up.
* Wind (20 FT).
Lower Elevations...Southeast winds 10 to 15 mph.
Ridges.............Southeast winds 5 to 10 mph.
* Mixing Height.........500-1500 ft agl increasing to 4500 ft agl.
* Transport Winds.......Southeast 15 to 20 mph.
* CWR...................0 percent.
.TONIGHT...
* Sky/Weather...........Mostly cloudy. Patchy fog after midnight.
* Chance Lightning.......0 percent.
* Min Temperature.......45-50.
24 hr trend......1 degree up.
* Max Humidity..........95-100 percent.
24 hr trend......Unchanged...6 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...Southeast winds 10 to 15 mph.
Ridges.............Southeast winds 10 to 15 mph.
* Mixing Height.........4000 ft agl decreasing to 1000-1500 ft agl.
* Transport Winds.......Southeast 15 to 20 mph.
* CWR...................0 percent.
.MONDAY...
* Sky/Weather...........Mostly sunny. Patchy fog in the morning.
* Chance Lightning.......0 percent.
* Max Temperature.......69-77...64-69 higher elevations.
24 hr trend......3 degrees up.
* Min Humidity..........41-51 percent.
24 hr trend......5 percent down...11 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...Southeast winds 15 to 20 mph.
Ridges.............Southeast winds 10 to 15 mph.
* Mixing Height.........1000-2500 ft agl increasing to 3000-4500 ft
agl in the afternoon.
* Transport Winds.......South 20 to 25 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.TUESDAY...Mostly clear. Lows in the upper 40s. Highs in the
upper 70s. Southeast winds 15 to 20 mph.
.WEDNESDAY...Partly cloudy. Lows in the lower 50s. Highs in the
upper 70s. South winds 10 to 15 mph.
.THURSDAY...Partly cloudy. Lows in the upper 40s. Highs in the
mid 70s. West winds 10 to 15 mph.
.FRIDAY...Partly cloudy. Lows in the lower 50s. Highs in the
upper 70s.
.SATURDAY...Cooler. Partly cloudy. Lows around 50. Highs in the
mid 60s.
$$
MTZ114-202345-
Lewis and Clark National Forest Rocky Mountain District-
Rocky Mountain Front-
317 AM MDT Sun Sep 20 2026
.TODAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......69-74...58-67 higher elevations.
24 hr trend......7 degrees up.
* Min Humidity..........33-38 percent...38-48 percent higher
elevations.
24 hr trend......14 percent down...26 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...Southwest winds 10 to 15 mph shifting to
the southeast in the afternoon.
Ridges.............West winds 5 to 10 mph.
* Mixing Height.........500-1500 ft agl increasing to 5000-5500 ft
agl.
* Transport Winds.......Southwest 15 to 20 mph shifting to the
northeast in the afternoon.
* CWR...................0 percent.
.TONIGHT...
* Sky/Weather...........Mostly clear.
* Chance Lightning.......0 percent.
* Min Temperature.......41-47.
24 hr trend......Unchanged.
* Max Humidity..........71-81 percent.
24 hr trend......11 percent down.
* Wind (20 FT).
Lower Elevations...Southeast winds around 5 mph shifting to
the southwest after midnight.
Ridges.............Southwest winds 10 to 15 mph.
* Mixing Height.........4000 ft agl decreasing to 500-1500 ft agl.
* Transport Winds.......Southeast 15 to 20 mph shifting to the
southwest after midnight.
* CWR...................0 percent.
.MONDAY...
* Sky/Weather...........Sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......74-79...61-71 higher elevations.
24 hr trend......5 degrees up.
* Min Humidity..........23-28 percent...28-38 percent higher
elevations.
24 hr trend......9 percent down...15 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...South winds 10 to 15 mph.
Ridges.............Southwest winds 10 to 15 mph.
* Mixing Height.........500-2000 ft agl increasing to 5500-6500 ft
agl.
* Transport Winds.......Southwest 15 to 20 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
70s. Southwest winds 15 to 20 mph.
.WEDNESDAY...Partly cloudy. Lows in the upper 40s. Highs in the
lower 70s. Southwest winds 20 to 25 mph.
.THURSDAY...Partly cloudy. Lows in the upper 40s. Highs in the
lower 70s. Southwest winds 15 to 20 mph.
.FRIDAY...Partly cloudy. Lows in the upper 40s. Highs in the
lower 70s.
.SATURDAY...Cooler. Mostly cloudy. Slight chance of rain. Lows in
the mid 40s. Highs in the upper 50s.
$$
MTZ115-202345-
Chouteau and Fergus Counties-
317 AM MDT Sun Sep 20 2026
.TODAY...
* Sky/Weather...........Mostly sunny. Chance of rain in the
morning.
* Chance Lightning.......0 percent.
* Max Temperature.......63-73...54-62 higher elevations.
24 hr trend......2 degrees up...7 degrees up higher elevations.
* Min Humidity..........48-58 percent...63-73 percent higher
elevations.
24 hr trend......6 percent down.
* Wind (20 FT).
Lower Elevations...Southeast winds 5 to 10 mph.
Ridges.............Northeast winds around 5 mph shifting to
the east in the afternoon.
* Mixing Height.........1000-2500 ft agl increasing to 3500-5000 ft
agl in the afternoon.
* Transport Winds.......East 15 to 20 mph.
* CWR...................10 percent.
.TONIGHT...
* Sky/Weather...........Partly cloudy. Patchy fog after midnight.
* Chance Lightning.......0 percent.
* Min Temperature.......44-50.
24 hr trend......1 degree down.
* Max Humidity..........89-99 percent.
24 hr trend......10 percent up...3 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...Southeast winds 10 to 15 mph.
Ridges.............Southeast winds 10 to 15 mph.
* Mixing Height.........4000 ft agl decreasing to 500-1500 ft agl.
* Transport Winds.......Southeast 20 to 25 mph.
* CWR...................0 percent.
.MONDAY...
* Sky/Weather...........Mostly sunny. Patchy fog in the morning.
* Chance Lightning.......0 percent.
* Max Temperature.......72-79...64-71 higher elevations.
24 hr trend......6 degrees up.
* Min Humidity..........32-42 percent.
24 hr trend......8 percent down...27 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...Southeast winds 10 to 15 mph.
Ridges.............Southeast winds 10 to 15 mph.
* Mixing Height.........500-1500 ft agl increasing to 4500-5500 ft
agl.
* Transport Winds.......Southeast 20 to 25 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.TUESDAY...Mostly clear. Lows in the upper 40s. Highs in the
upper 70s. South winds 15 to 20 mph.
.WEDNESDAY...Partly cloudy. Lows in the lower 50s. Highs in the
upper 70s. Southwest winds 10 to 15 mph.
.THURSDAY...Partly cloudy. Lows in the lower 50s. Highs in the
upper 70s. Southwest winds 10 to 15 mph.
.FRIDAY...Partly cloudy. Lows in the lower 50s. Highs in the
lower 80s.
.SATURDAY...Cooler. Partly cloudy. Lows in the lower 50s. Highs
in the upper 60s.
$$
MTZ116-118-202345-
Lincoln Ranger District of the Helena National Forest-
Helena and Townsend Ranger Districts of the Helena National
Forest-
317 AM MDT Sun Sep 20 2026
.TODAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......63-71...55-65 higher elevations.
24 hr trend......9 degrees up.
* Min Humidity..........43-53 percent.
24 hr trend......11 percent down...21 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...South winds around 5 mph shifting to the
southeast in the afternoon.
Ridges.............Northwest winds around 5 mph.
* Mixing Height.........500-1500 ft agl increasing to 4500-5000 ft
agl.
* Transport Winds.......West 10 to 15 mph shifting to the northwest
in the afternoon.
* CWR...................0 percent.
.TONIGHT...
* Sky/Weather...........Mostly clear.
* Chance Lightning.......0 percent.
* Min Temperature.......40-47.
24 hr trend......2 degrees down.
* Max Humidity..........75-85 percent.
24 hr trend......20 percent down...14 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...Southeast winds 5 to 10 mph.
Ridges.............South winds around 5 mph shifting to the
southwest after midnight.
* Mixing Height.........4000 ft agl decreasing to 500-1000 ft agl.
* Transport Winds.......South 10 to 15 mph.
* CWR...................0 percent.
.MONDAY...
* Sky/Weather...........Sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......68-75...60-69 higher elevations.
24 hr trend......5 degrees up.
* Min Humidity..........31-41 percent.
24 hr trend......17 percent down.
* Wind (20 FT).
Lower Elevations...South winds 10 to 15 mph.
Ridges.............South winds 5 to 10 mph.
* Mixing Height.........500-1500 ft agl increasing to 4500-5000 ft
agl.
* Transport Winds.......Southwest 15 to 20 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
70s. South winds 10 to 15 mph.
.WEDNESDAY...Partly cloudy. Lows in the upper 40s. Highs in the
lower 70s. Southwest winds 10 to 15 mph.
.THURSDAY...Partly cloudy. Lows in the upper 40s. Highs in the
lower 70s. Southwest winds 10 to 15 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s.
.SATURDAY...Cooler. Partly cloudy. Lows in the upper 40s. Highs
in the mid 60s.
$$
MTZ117-202345-
Central and Eastern Lewis and Clark National Forest Areas-
317 AM MDT Sun Sep 20 2026
.TODAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......64-74...55-64 higher elevations.
24 hr trend......Unchanged.
* Min Humidity..........36-46 percent...50-60 percent higher
elevations.
24 hr trend......24 percent down.
* Wind (20 FT).
Lower Elevations...South winds 10 to 15 mph shifting to the
northeast in the afternoon.
Ridges.............North winds 5 to 10 mph.
* Mixing Height.........500-1500 ft agl increasing to 5000 ft agl.
* Transport Winds.......Southwest 15 to 20 mph shifting to the
north in the afternoon.
* CWR...................0 percent.
.TONIGHT...
* Sky/Weather...........Partly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......39-47.
24 hr trend......1 degree up.
* Max Humidity..........78-88 percent.
24 hr trend......4 percent down.
* Wind (20 FT).
Lower Elevations...Southeast winds 10 to 15 mph.
Ridges.............Southeast winds 10 to 15 mph shifting to
the southwest after midnight.
* Mixing Height.........4000 ft agl decreasing to 500-1000 ft agl.
* Transport Winds.......Southeast 15 to 20 mph shifting to the
south after midnight.
* CWR...................0 percent.
.MONDAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......70-80...61-70 higher elevations.
24 hr trend......4 degrees up.
* Min Humidity..........27-37 percent.
24 hr trend......7 percent down...18 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.......South 15 to 20 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
70s. South winds 15 to 20 mph.
.WEDNESDAY...Partly cloudy. Lows in the upper 40s. Highs in the
lower 70s. Southwest winds 15 to 20 mph.
.THURSDAY...Partly cloudy. Lows in the upper 40s. Highs in the
mid 70s. Southwest winds 10 to 15 mph.
.FRIDAY...Partly cloudy. Lows around 50. Highs in the mid 70s.
.SATURDAY...Cooler. Partly cloudy. Slight chance of rain. Lows in
the upper 40s. Highs in the mid 60s.
$$
weather.gov/greatfalls