Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
145
FNUS55 KTFX 191921
FWFTFX
Fire Weather Planning Forecast for North-Central Montana
National Weather Service Great Falls MT
121 PM MDT Fri Sep 19 2025
.DISCUSSION...
The ridge will keep drier and warmer conditions through Saturday.
Overnight humidities will remain poorer over higher terrain
tonight. The ridge breaking down Sunday and Monday will bring
windy conditions to the Rocky Mountain Front Sunday, and breezy to
windy conditions over North-Central Montana Monday. Scattered
showers and thunderstorms return for Sunday.
MTZ112-201030-
Eastern Glacier/Toole/Central/Eastern Pondera/Liberty-
121 PM MDT Fri Sep 19 2025
.TONIGHT...
* Sky/Weather...........Mostly clear.
* Chance Lightning.......0 percent.
* Min Temperature.......46-53.
24 hr trend......2 degrees up.
* Max Humidity..........61-71 percent...51-61 percent higher
elevations.
24 hr trend......23 percent down...13 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...Southeast winds 10 to 15 mph shifting to
the southwest after midnight.
Ridges.............South winds 10 to 15 mph.
* Mixing Height.........6500 ft agl decreasing to 500-1000 ft agl.
* Transport Winds.......South 15 to 20 mph.
* CWR...................0 percent.
.SATURDAY...
* Sky/Weather...........Sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......78-86...69-76 higher elevations.
24 hr trend......7 degrees up...1 degree up higher elevations.
* Min Humidity..........18-23 percent.
24 hr trend......10 percent down...5 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...Southwest winds 15 to 20 mph.
Ridges.............Southwest winds 15 to 20 mph.
* Mixing Height.........500-1500 ft agl increasing to 8000-8500 ft
agl.
* Transport Winds.......Southwest around 25 mph.
* CWR...................0 percent.
.SATURDAY NIGHT...
* Sky/Weather...........Partly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......47-53.
24 hr trend......Unchanged.
* Max Humidity..........49-59 percent.
24 hr trend......8 percent down.
* Wind (20 FT).
Lower Elevations...Southwest winds 15 to 20 mph.
Ridges.............Southwest winds 15 to 20 mph.
* Mixing Height.........5500 ft agl decreasing to 500-1500 ft agl.
* Transport Winds.......West around 25 mph increasing to around 35
mph after midnight.
* CWR...................0 percent.
.SUNDAY...
* Sky/Weather...........Mostly sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......72-82...63-73 higher elevations.
24 hr trend......6 degrees down.
* Min Humidity..........22-32 percent.
24 hr trend......4 percent up...9 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...Windy. West winds around 25 mph.
Ridges.............West winds 20 to 25 mph.
* Mixing Height.........500-2000 ft agl increasing to 4000-5500 ft
agl late in the morning, then increasing to 7000-8500 ft agl in
the afternoon decreasing to 6000 ft agl late in the afternoon.
* Transport Winds.......West 30 to 35 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.MONDAY...Cooler, windy. Mostly cloudy. Slight chance of showers.
Lows in the mid 40s. Highs in the mid 60s. West winds around
30 mph.
.TUESDAY...Warmer. Mostly clear. Lows in the lower 40s. Highs in
the upper 70s. Southwest winds 20 to 25 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 40s. Highs in the
lower 80s. South winds 15 to 20 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s.
.FRIDAY...Partly cloudy. Lows in the lower 40s. Highs in the
upper 60s.
$$
MTZ113-201030-
Hill and Blaine Counties-
121 PM MDT Fri Sep 19 2025
.TONIGHT...
* Sky/Weather...........Mostly clear.
* Chance Lightning.......0 percent.
* Min Temperature.......45-53.
24 hr trend......5 degrees up.
* Max Humidity..........75-85 percent...65-75 percent higher
elevations.
24 hr trend......7 percent down.
* Wind (20 FT).
Lower Elevations...Southeast winds 10 to 15 mph.
Ridges.............Southeast winds 5 to 10 mph.
* Mixing Height.........4500 ft agl decreasing to 500-1000 ft agl.
* Transport Winds.......Southeast 15 to 20 mph.
* CWR...................0 percent.
.SATURDAY...
* Sky/Weather...........Sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......81-86...73-78 higher elevations.
24 hr trend......6 degrees up.
* Min Humidity..........22-32 percent.
24 hr trend......6 percent down...11 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...South winds 5 to 10 mph.
Ridges.............South winds 5 to 10 mph.
* Mixing Height.........500-2000 ft agl increasing to 7500 ft agl.
* Transport Winds.......Southwest 15 to 20 mph.
* CWR...................0 percent.
.SATURDAY NIGHT...
* Sky/Weather...........Mostly clear.
* Chance Lightning.......0 percent.
* Min Temperature.......47-55.
24 hr trend......2 degrees up.
* Max Humidity..........55-65 percent...45-55 percent higher
elevations.
24 hr trend......33 percent down...21 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...South winds 10 to 15 mph.
Ridges.............South winds 10 to 15 mph.
* Mixing Height.........4000 ft agl decreasing to 500-1000 ft agl.
* Transport Winds.......Southwest 20 to 25 mph.
* CWR...................0 percent.
.SUNDAY...
* Sky/Weather...........Sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......81-86...73-78 higher elevations.
24 hr trend......1 degree down.
* Min Humidity..........20-25 percent.
24 hr trend......8 percent down.
* Wind (20 FT).
Lower Elevations...West winds 10 to 15 mph.
Ridges.............West winds 10 to 15 mph.
* Mixing Height.........500-2000 ft agl increasing to 6500-8000 ft
agl.
* Transport Winds.......West 20 to 25 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.MONDAY...Cooler, windy. Mostly cloudy. Chance of showers. Lows
in the upper 40s. Highs in the mid 60s. West winds around 25 mph.
.TUESDAY...Mostly clear. Lows in the lower 40s. Highs in the mid
70s. Southwest winds 10 to 15 mph.
.WEDNESDAY...Clear. Lows in the mid 40s. Highs around 80.
Southeast winds 10 to 15 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the
upper 70s.
.FRIDAY...Partly cloudy. Slight chance of rain. Lows in the mid
40s. Highs in the lower 70s.
$$
MTZ114-201030-
Lewis and Clark National Forest Rocky Mountain District-
Rocky Mountain Front-
121 PM MDT Fri Sep 19 2025
.TONIGHT...
* Sky/Weather...........Mostly clear.
* Chance Lightning.......0 percent.
* Min Temperature.......46-53.
24 hr trend......1 degree down.
* Max Humidity..........55-65 percent...46-56 percent higher
elevations.
24 hr trend......28 percent down...6 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...Southeast winds around 5 mph shifting to
the southwest after midnight.
Ridges.............West winds 10 to 15 mph.
* Mixing Height.........7000 ft agl decreasing to 1000-2000 ft agl.
* Transport Winds.......Southeast 15 to 20 mph shifting to the
southwest after midnight.
* CWR...................0 percent.
.SATURDAY...
* Sky/Weather...........Sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......78-86...65-75 higher elevations.
24 hr trend......4 degrees up...1 degree down higher elevations.
* Min Humidity..........17-22 percent...22-32 percent higher
elevations.
24 hr trend......9 percent down...4 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...West winds 15 to 20 mph.
Ridges.............West winds 15 to 20 mph.
* Mixing Height.........1000-2000 ft agl increasing to 8000-9500 ft
agl.
* Transport Winds.......West around 25 mph.
* CWR...................0 percent.
.SATURDAY NIGHT...
* Sky/Weather...........Partly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......47-54.
24 hr trend......3 degrees up...2 degrees down higher
elevations.
* Max Humidity..........48-58 percent.
24 hr trend......1 percent down.
* Wind (20 FT).
Lower Elevations...Southwest winds 15 to 20 mph.
Ridges.............Southwest winds 15 to 20 mph.
* Mixing Height.........6500 ft agl decreasing to 1000-2000 ft agl.
* Transport Winds.......West 30 to 35 mph.
* CWR...................0 percent.
.SUNDAY...
* Sky/Weather...........Mostly sunny. Slight chance of showers in
the afternoon.
* Chance Lightning.......0 percent.
* Max Temperature.......72-82...59-69 higher elevations.
24 hr trend......6 degrees down.
* Min Humidity..........23-30 percent...31-41 percent higher
elevations.
24 hr trend......7 percent up.
* Wind (20 FT).
Lower Elevations...Southwest winds 20 to 25 mph.
Ridges.............Windy. West winds 20 to 25 mph.
* Mixing Height.........1000-2500 ft agl increasing to 4500 ft agl
late in the morning, then increasing to 6500-8000 ft agl early in
the afternoon increasing to 8500-10000 ft agl early in the
afternoon decreasing to 6500 ft agl.
* Transport Winds.......West 30 to 35 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.MONDAY...Windy. Mostly cloudy. Chance of showers. Lows in the
mid 40s. Highs in the lower 60s. West winds around 30 mph.
.TUESDAY...Warmer. Mostly clear. Lows in the lower 40s. Highs in
the mid 70s. Southwest winds 15 to 20 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 40s. Highs in the
upper 70s. Southwest winds 10 to 15 mph.
.THURSDAY...Mostly clear. Slight chance of rain. Lows in the
upper 40s. Highs in the lower 70s.
.FRIDAY...Partly cloudy. Slight chance of rain. Lows in the mid
40s. Highs in the upper 60s.
$$
MTZ115-201030-
Chouteau and Fergus Counties-
121 PM MDT Fri Sep 19 2025
.TONIGHT...
* Sky/Weather...........Partly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......47-54.
24 hr trend......2 degrees up.
* Max Humidity..........65-75 percent.
24 hr trend......17 percent down.
* Wind (20 FT).
Lower Elevations...Southeast winds 10 to 15 mph shifting to
the south after midnight.
Ridges.............Southeast winds 10 to 15 mph shifting to
the southwest after midnight.
* Mixing Height.........4500 ft agl decreasing to 500-1000 ft agl.
* Transport Winds.......Southeast 15 to 20 mph shifting to the
south after midnight.
* CWR...................0 percent.
.SATURDAY...
* Sky/Weather...........Sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......81-86...73-79 higher elevations.
24 hr trend......7 degrees up.
* Min Humidity..........19-24 percent.
24 hr trend......9 percent down.
* Wind (20 FT).
Lower Elevations...Southwest winds 10 to 15 mph.
Ridges.............Southwest winds 10 to 15 mph shifting to
the west in the afternoon.
* Mixing Height.........500-1500 ft agl increasing to 8500-9000 ft
agl.
* Transport Winds.......South 15 to 20 mph shifting to the west in
the afternoon.
* CWR...................0 percent.
.SATURDAY NIGHT...
* Sky/Weather...........Partly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......50-56.
24 hr trend......4 degrees up.
* Max Humidity..........47-57 percent...38-48 percent higher
elevations.
24 hr trend......19 percent down.
* Wind (20 FT).
Lower Elevations...South winds 10 to 15 mph.
Ridges.............Southwest winds 10 to 15 mph.
* Mixing Height.........5000 ft agl decreasing to 500-1000 ft agl.
* Transport Winds.......Southwest 15 to 20 mph.
* CWR...................0 percent.
.SUNDAY...
* Sky/Weather...........Sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......81-86...73-79 higher elevations.
24 hr trend......1 degree down.
* Min Humidity..........18-23 percent.
24 hr trend......1 percent down.
* Wind (20 FT).
Lower Elevations...West winds 15 to 20 mph.
Ridges.............West winds 10 to 15 mph.
* Mixing Height.........500-2000 ft agl increasing to 4000-5500 ft
agl late in the morning, then increasing to 7500 ft agl early in
the afternoon increasing to 9000-10000 ft agl early in the
afternoon decreasing to 7500 ft agl.
* Transport Winds.......West 20 to 25 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.MONDAY...Cooler, windy. Mostly cloudy. Chance of showers. Lows
around 50. Highs in the mid 60s. West winds around 25 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
70s. South winds 10 to 15 mph.
.WEDNESDAY...Clear. Lows in the upper 40s. Highs in the lower
80s. South winds 10 to 15 mph.
.THURSDAY...Mostly clear. Lows around 50. Highs in the upper 70s.
.FRIDAY...Partly cloudy. Slight chance of rain. Lows in the upper
40s. Highs in the lower 70s.
$$
MTZ116-118-201030-
Lincoln Ranger District of the Helena National Forest-
Helena and Townsend Ranger Districts of the Helena National
Forest-
121 PM MDT Fri Sep 19 2025
.TONIGHT...
* Sky/Weather...........Partly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......45-53.
24 hr trend......2 degrees up.
* Max Humidity..........57-67 percent...45-55 percent higher
elevations.
24 hr trend......21 percent down.
* Wind (20 FT).
Lower Elevations...Northeast winds 10 to 15 mph shifting to
the south after midnight.
Ridges.............North winds 10 to 15 mph shifting to the
southwest after midnight.
* Mixing Height.........6000 ft agl decreasing to 1000-2000 ft agl.
* Transport Winds.......Northeast 10 to 15 mph shifting to the
south after midnight.
* CWR...................0 percent.
.SATURDAY...
* Sky/Weather...........Sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......76-83...66-75 higher elevations.
24 hr trend......4 degrees up.
* Min Humidity..........20-28 percent.
24 hr trend......4 percent down.
* Wind (20 FT).
Lower Elevations...South winds 10 to 15 mph shifting to the
west in the afternoon.
Ridges.............West winds 10 to 15 mph.
* Mixing Height.........1000-2000 ft agl increasing to 9000-10000
ft agl.
* Transport Winds.......Southwest 15 to 20 mph.
* CWR...................0 percent.
.SATURDAY NIGHT...
* Sky/Weather...........Mostly clear.
* Chance Lightning.......0 percent.
* Min Temperature.......45-53.
24 hr trend......1 degree up.
* Max Humidity..........51-61 percent.
24 hr trend......8 percent down...1 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...West winds 10 to 15 mph shifting to the
south after midnight.
Ridges.............Southwest winds 10 to 15 mph.
* Mixing Height.........7500 ft agl decreasing to 1000-2000 ft agl.
* Transport Winds.......West 20 to 25 mph.
* CWR...................0 percent.
.SUNDAY...
* Sky/Weather...........Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon.
* Chance Lightning.......20 percent.
* Max Temperature.......72-80...62-72 higher elevations.
24 hr trend......4 degrees down.
* Min Humidity..........30-40 percent.
24 hr trend......10 percent up.
* Wind (20 FT).
Lower Elevations...Southwest winds 15 to 20 mph.
Ridges.............Southwest winds 15 to 20 mph.
* Mixing Height.........1000-2500 ft agl increasing to 4500 ft agl
late in the morning, then increasing to 6500-8000 ft agl early in
the afternoon increasing to 9000-10500 ft agl early in the
afternoon decreasing to 6000 ft agl.
* Transport Winds.......Southwest 20 to 25 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.MONDAY...Cooler. Mostly cloudy. Showers likely and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the upper 50s.
West winds 20 to 25 mph.
.TUESDAY...Mostly clear. Lows around 40. Highs in the upper 60s.
Southwest winds 15 to 20 mph.
.WEDNESDAY...Clear. Lows in the mid 40s. Highs in the mid 70s.
South winds 15 to 20 mph.
.THURSDAY...Mostly clear. Slight chance of rain. Lows in the mid
40s. Highs in the lower 70s.
.FRIDAY...Partly cloudy. Slight chance of rain. Lows in the mid
40s. Highs in the upper 60s.
$$
MTZ117-201030-
Central and Eastern Lewis and Clark National Forest Areas-
121 PM MDT Fri Sep 19 2025
.TONIGHT...
* Sky/Weather...........Partly cloudy.
* Chance Lightning.......0 percent.
* Min Temperature.......44-54.
24 hr trend......1 degree up.
* Max Humidity..........57-67 percent.
24 hr trend......14 percent down...8 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...East winds 10 to 15 mph shifting to the
south after midnight.
Ridges.............East winds 10 to 15 mph shifting to the
southwest after midnight.
* Mixing Height.........5500 ft agl decreasing to 1000-1500 ft agl.
* Transport Winds.......East 15 to 20 mph shifting to the south
after midnight.
* CWR...................0 percent.
.SATURDAY...
* Sky/Weather...........Sunny.
* Chance Lightning.......0 percent.
* Max Temperature.......76-86...67-77 higher elevations.
24 hr trend......12 degrees up...4 degrees up higher elevations.
* Min Humidity..........18-24 percent.
24 hr trend......8 percent down.
* Wind (20 FT).
Lower Elevations...Southwest winds 10 to 15 mph.
Ridges.............Southwest winds 10 to 15 mph.
* Mixing Height.........1000-2500 ft agl increasing to 8000-9500 ft
agl.
* Transport Winds.......Southwest 15 to 20 mph.
* CWR...................0 percent.
.SATURDAY NIGHT...
* Sky/Weather...........Mostly clear.
* Chance Lightning.......0 percent.
* Min Temperature.......46-56.
24 hr trend......4 degrees up...2 degrees down higher
elevations.
* Max Humidity..........44-54 percent.
24 hr trend......24 percent down...19 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...Southwest winds 10 to 15 mph.
Ridges.............Southwest winds 10 to 15 mph.
* Mixing Height.........6000 ft agl decreasing to 1000-1500 ft agl.
* Transport Winds.......West 15 to 20 mph.
* CWR...................0 percent.
.SUNDAY...
* Sky/Weather...........Mostly sunny. Slight chance of showers in
the afternoon.
* Chance Lightning.......0 percent.
* Max Temperature.......75-84...66-76 higher elevations.
24 hr trend......4 degrees down.
* Min Humidity..........22-30 percent.
24 hr trend......3 percent up.
* Wind (20 FT).
Lower Elevations...West winds 15 to 20 mph.
Ridges.............West winds 15 to 20 mph.
* Mixing Height.........500-1500 ft agl increasing to 3000 ft agl
late in the morning, then increasing to 5000 ft agl late in the
morning increasing to 7000 ft agl early in the afternoon
increasing to 9000-10500 ft agl decreasing to 7000 ft agl late in
the afternoon.
* Transport Winds.......West 20 to 25 mph.
* CWR...................0 percent.
.FORECAST DAYS 3 THROUGH 7......
.MONDAY...Cooler, windy. Mostly cloudy. Showers likely and slight
chance of thunderstorms. Lows in the mid 40s. Highs in the upper
50s. West winds around 25 mph.
.TUESDAY...Warmer. Mostly clear. Lows in the lower 40s. Highs in
the lower 70s. Southwest winds 15 to 20 mph.
.WEDNESDAY...Clear. Lows in the mid 40s. Highs in the mid 70s.
South winds 10 to 15 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s.
.FRIDAY...Partly cloudy. Slight chance of rain. Lows in the mid
40s. Highs in the upper 60s.
$$
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