Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
531
FNUS55 KTFX 052013
FWFTFX
Fire Weather Planning Forecast for North-Central Montana
National Weather Service Great Falls MT
213 PM MDT Sat Sep 5 2026
.DISCUSSION...
Expect increasing chances for showers and thunderstorms
tonight through Sunday. A more widespread steady rain
develops on Monday. Rainfall amounts of 1 to 2 inches
will be possible from Sunday into Monday. Brusda
MTZ112-061100-
Eastern Glacier/Toole/Central/Eastern Pondera/Liberty-
213 PM MDT Sat Sep 5 2026
.TONIGHT...
* Sky/Weather...........Mostly cloudy. Showers in the evening.
Slight chance of thunderstorms through the night. Chance of
showers after midnight. Patchy fog after midnight.
* Chance Lightning.......20 percent.
* Min Temperature.......45-50.
24 hr trend......2 degrees up.
* Max Humidity..........95-100 percent.
24 hr trend......Unchanged.
* Wind (20 FT).
Lower Elevations...North winds 15 to 20 mph.
Ridges.............North winds 15 to 20 mph.
* Mixing Height.........4000-5500 ft agl decreasing to 1000-1500 ft
agl early in the evening.
* Transport Winds.......Northeast 20 to 25 mph.
* CWR...................50 percent.
.SUNDAY...
* Sky/Weather...........Mostly cloudy. Patchy fog through the day.
Chance of showers and slight chance of thunderstorms through the
day.
* Chance Lightning.......20 percent.
* Max Temperature.......60-70...54-60 higher elevations.
24 hr trend......5 degrees down...1 degree up higher elevations.
* Min Humidity..........73-83 percent...87-97 percent higher
elevations.
24 hr trend......27 percent up.
* Wind (20 FT).
Lower Elevations...Northeast winds 5 to 10 mph.
Ridges.............Northeast winds 5 to 10 mph.
* Mixing Height.........1000-2500 ft agl increasing to 3000 ft agl
early in the afternoon.
* Transport Winds.......Northeast 10 to 15 mph.
* CWR...................30 percent.
.SUNDAY NIGHT...
* Sky/Weather...........Mostly cloudy. Patchy fog through the
night. Showers likely and slight chance of thunderstorms through
the night.
* Chance Lightning.......20 percent.
* Min Temperature.......45-50.
24 hr trend......1 degree down.
* Max Humidity..........95-100 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.........2500-3000 ft agl decreasing to 500-1500 ft
agl early in the evening.
* Transport Winds.......North 15 to 20 mph.
* CWR...................60 percent.
.LABOR DAY...
* Sky/Weather...........Cloudy. Patchy fog in the morning. Showers
through the day. Chance of thunderstorms in the afternoon.
* Chance Lightning.......50 percent.
* Max Temperature.......55-63...48-54 higher elevations.
24 hr trend......4 degrees down.
* Min Humidity..........82-92 percent.
24 hr trend......12 percent up...7 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...Northwest winds 15 to 20 mph.
Ridges.............Northwest winds 15 to 20 mph.
* Mixing Height.........1500-3000 ft agl.
* Transport Winds.......North 15 to 20 mph increasing to around 25
mph in the afternoon.
* CWR...................80 percent.
.FORECAST DAYS 3 THROUGH 7......
.TUESDAY...Windy. Mostly cloudy. Showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the mid 60s. West
winds around 30 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 40s. Highs in the
lower 70s. West winds 20 to 25 mph.
.THURSDAY...Windy. Mostly clear. Lows in the upper 40s. Highs in
the mid 70s. Southwest winds around 30 mph.
.FRIDAY...Partly cloudy. Chance of showers. Lows in the mid 40s.
Highs in the mid 60s.
.SATURDAY...Mostly cloudy. Chance of showers. Lows in the lower
40s. Highs in the lower 60s.
$$
MTZ113-061100-
Hill and Blaine Counties-
213 PM MDT Sat Sep 5 2026
.TONIGHT...
* Sky/Weather...........Partly cloudy then becoming mostly cloudy.
Patchy fog after midnight. Slight chance of showers after
midnight.
* Chance Lightning.......0 percent.
* Min Temperature.......51-56...44-53 higher elevations.
24 hr trend......3 degrees up.
* Max Humidity..........91-100 percent.
24 hr trend......14 percent up...26 percent up higher
elevations.
* Wind (20 FT).
Lower Elevations...Northeast winds 10 to 15 mph.
Ridges.............Northeast winds 10 to 15 mph.
* Mixing Height.........4000-5500 ft agl decreasing to 1000-1500 ft
agl early in the evening.
* Transport Winds.......Northeast 20 to 25 mph.
* CWR...................10 percent.
.SUNDAY...
* Sky/Weather...........Partly sunny. Patchy fog in the morning.
Chance of showers and slight chance of thunderstorms through the
day.
* Chance Lightning.......20 percent.
* Max Temperature.......72-77...65-70 higher elevations.
24 hr trend......3 degrees down.
* Min Humidity..........62-72 percent...71-80 percent higher
elevations.
24 hr trend......30 percent up.
* Wind (20 FT).
Lower Elevations...Northeast winds 10 to 15 mph.
Ridges.............Northeast winds 5 to 10 mph.
* Mixing Height.........1000-2500 ft agl increasing to 3000-3500 ft
agl in the afternoon.
* Transport Winds.......Northeast 10 to 15 mph.
* CWR...................20 percent.
.SUNDAY NIGHT...
* Sky/Weather...........Mostly cloudy. Patchy fog through the
night. Chance of showers and slight chance of thunderstorms in
the evening. Showers and chance of thunderstorms after midnight.
* Chance Lightning.......50 percent.
* Min Temperature.......50-56...44-54 higher elevations.
24 hr trend......1 degree down.
* Max Humidity..........95-100 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.........1500-3000 ft agl decreasing to 1000-1500 ft
agl in the late evening and overnight.
* Transport Winds.......Northeast 15 to 20 mph.
* CWR...................60 percent.
.LABOR DAY...
* Sky/Weather...........Cloudy. Patchy fog in the morning. Slight
chance of thunderstorms in the morning. Showers through the day.
Chance of thunderstorms in the afternoon.
* Chance Lightning.......50 percent.
* Max Temperature.......64-71...57-62 higher elevations.
24 hr trend......8 degrees down.
* Min Humidity..........68-78 percent...80-90 percent higher
elevations.
24 hr trend......11 percent up.
* Wind (20 FT).
Lower Elevations...Northwest winds 10 to 15 mph.
Ridges.............Northwest winds 10 to 15 mph shifting to
the west in the afternoon.
* Mixing Height.........1500-3000 ft agl increasing to 3500 ft agl
early in the afternoon.
* Transport Winds.......North 15 to 20 mph.
* CWR...................80 percent.
.FORECAST DAYS 3 THROUGH 7......
.TUESDAY...Very windy. Showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the mid 60s. West
winds around 35 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers. Lows in the
mid 40s. Highs in the mid 70s. West winds 20 to 25 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the
upper 70s. Southwest winds 15 to 20 mph.
.FRIDAY...Partly cloudy. Slight chance of showers. Lows in the
upper 40s. Highs around 70.
.SATURDAY...Mostly cloudy. Chance of showers. Lows in the mid
40s. Highs in the upper 60s.
$$
MTZ114-061100-
Lewis and Clark National Forest Rocky Mountain District-
Rocky Mountain Front-
213 PM MDT Sat Sep 5 2026
.TONIGHT...
* Sky/Weather...........Mostly cloudy. Patchy fog through the
night. Slight chance of thunderstorms in the evening. Chance of
showers through the night.
* Chance Lightning.......20 percent.
* Min Temperature.......43-51.
24 hr trend......1 degree up.
* Max Humidity..........92-100 percent.
24 hr trend......Unchanged.
* Wind (20 FT).
Lower Elevations...North winds 10 to 15 mph.
Ridges.............Northeast winds 10 to 15 mph.
* Mixing Height.........4000-5500 ft agl decreasing to 1000-1500 ft
agl early in the evening.
* Transport Winds.......Northeast 15 to 20 mph.
* CWR...................50 percent.
.SUNDAY...
* Sky/Weather...........Partly sunny. Patchy fog through the day.
Chance of showers in the morning. Slight chance of showers and
thunderstorms in the afternoon.
* Chance Lightning.......20 percent.
* Max Temperature.......63-70...53-63 higher elevations.
24 hr trend......Unchanged.
* Min Humidity..........63-73 percent...73-83 percent higher
elevations.
24 hr trend......26 percent up...7 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...Northeast winds 10 to 15 mph.
Ridges.............Southeast winds 10 to 15 mph shifting to
the east in the afternoon.
* Mixing Height.........1500-3000 ft agl increasing to 3500-4000 ft
agl early in the afternoon.
* Transport Winds.......Northeast 15 to 20 mph.
* CWR...................20 percent.
.SUNDAY NIGHT...
* Sky/Weather...........Mostly cloudy. Patchy fog through the
night. Chance of thunderstorms in the evening. Showers through
the night. Slight chance of thunderstorms after midnight.
* Chance Lightning.......50 percent.
* Min Temperature.......42-51.
24 hr trend......Unchanged.
* Max Humidity..........94-100 percent.
24 hr trend......Unchanged.
* Wind (20 FT).
Lower Elevations...North winds 10 to 15 mph.
Ridges.............North winds 5 to 10 mph.
* Mixing Height.........1500-3000 ft agl decreasing to 1000-1500 ft
agl after midnight.
* Transport Winds.......North 15 to 20 mph.
* CWR...................60 percent.
.LABOR DAY...
* Sky/Weather...........Cloudy. Patchy fog through the day. Slight
chance of thunderstorms in the morning. Showers through the day.
Chance of thunderstorms in the afternoon.
* Chance Lightning.......50 percent.
* Max Temperature.......56-63...43-53 higher elevations.
24 hr trend......5 degrees down...11 degrees down higher
elevations.
* Min Humidity..........72-82 percent...86-96 percent higher
elevations.
24 hr trend......6 percent up...28 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...Northwest winds 10 to 15 mph.
Ridges.............West winds 10 to 15 mph.
* Mixing Height.........1000-2500 ft agl increasing to 2500-3000 ft
agl late in the afternoon.
* Transport Winds.......North 15 to 20 mph increasing to northwest
around 25 mph in the afternoon.
* CWR...................90 percent.
.FORECAST DAYS 3 THROUGH 7......
.TUESDAY...Very windy. Mostly cloudy. Showers likely. Lows in the
mid 40s. Highs in the lower 60s. West winds around 35 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 40s. Highs around
70. West winds 20 to 25 mph.
.THURSDAY...Windy. Mostly clear. Lows in the upper 40s. Highs in
the lower 70s. Southwest winds around 30 mph.
.FRIDAY...Partly cloudy. Chance of showers. Lows in the upper
40s. Highs in the mid 60s.
.SATURDAY...Mostly cloudy. Chance of showers. Lows in the lower
40s. Highs in the lower 60s.
$$
MTZ115-061100-
Chouteau and Fergus Counties-
213 PM MDT Sat Sep 5 2026
.TONIGHT...
* Sky/Weather...........Partly cloudy then becoming mostly cloudy.
Patchy fog after midnight.
* Chance Lightning.......0 percent.
* Min Temperature.......50-57.
24 hr trend......2 degrees up.
* Max Humidity..........88-98 percent.
24 hr trend......14 percent up.
* Wind (20 FT).
Lower Elevations...Northeast winds 10 to 15 mph.
Ridges.............Northeast winds 5 to 10 mph.
* Mixing Height.........4000-5500 ft agl decreasing to 500-1000 ft
agl early in the evening.
* Transport Winds.......Northeast 20 to 25 mph.
* CWR...................0 percent.
.SUNDAY...
* Sky/Weather...........Partly sunny. Patchy fog in the morning.
Slight chance of showers in the morning.
* Chance Lightning.......0 percent.
* Max Temperature.......72-79.
24 hr trend......Unchanged.
* Min Humidity..........53-63 percent.
24 hr trend......19 percent up.
* Wind (20 FT).
Lower Elevations...Northeast winds 5 to 10 mph.
Ridges.............East winds around 5 mph shifting to the
northeast in the afternoon.
* Mixing Height.........1000-2500 ft agl increasing to 3000-4000 ft
agl in the afternoon.
* Transport Winds.......Northeast 15 to 20 mph.
* CWR...................10 percent.
.SUNDAY NIGHT...
* Sky/Weather...........Mostly cloudy. Patchy fog through the
night. Chance of showers and thunderstorms in the evening.
Showers and slight chance of thunderstorms after midnight.
* Chance Lightning.......50 percent.
* Min Temperature.......51-58.
24 hr trend......2 degrees up.
* Max Humidity..........92-100 percent.
24 hr trend......Unchanged...15 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...Northwest winds 10 to 15 mph.
Ridges.............Northeast winds 10 to 15 mph shifting to
the west after midnight.
* Mixing Height.........2500-3500 ft agl decreasing to 1000-1500 ft
agl early in the evening.
* Transport Winds.......North 15 to 20 mph.
* CWR...................70 percent.
.LABOR DAY...
* Sky/Weather...........Mostly cloudy. Patchy fog in the morning.
Showers through the day. Chance of thunderstorms in the
afternoon.
* Chance Lightning.......50 percent.
* Max Temperature.......64-73.
24 hr trend......9 degrees down.
* Min Humidity..........58-68 percent.
24 hr trend......21 percent up...4 percent down higher
elevations.
* Wind (20 FT).
Lower Elevations...Windy. Northwest winds 10 to 15 mph
increasing to west around 25 mph in the afternoon.
Ridges.............West winds 10 to 15 mph.
* Mixing Height.........1500-3000 ft agl increasing to 3500-5000 ft
agl in the afternoon.
* Transport Winds.......Northwest 20 to 25 mph increasing to west
around 30 mph in the afternoon.
* CWR...................70 percent.
.FORECAST DAYS 3 THROUGH 7......
.TUESDAY...Very windy. Mostly cloudy. Showers likely and slight
chance of thunderstorms. Lows in the upper 40s. Highs in the
upper 60s. West winds around 35 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
70s. West winds 20 to 25 mph.
.THURSDAY...Mostly clear. Lows around 50. Highs around 80.
Southwest winds 20 to 25 mph.
.FRIDAY...Partly cloudy. Slight chance of showers. Lows in the
lower 50s. Highs in the lower 70s.
.SATURDAY...Mostly cloudy. Chance of showers. Lows in the upper
40s. Highs in the upper 60s.
$$
MTZ116-118-061100-
Lincoln Ranger District of the Helena National Forest-
Helena and Townsend Ranger Districts of the Helena National
Forest-
213 PM MDT Sat Sep 5 2026
.TONIGHT...
* Sky/Weather...........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening. Patchy fog after
midnight.
* Chance Lightning.......10 percent.
* Min Temperature.......44-50.
24 hr trend......1 degree up.
* Max Humidity..........87-97 percent.
24 hr trend......20 percent up...4 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...North winds 15 to 20 mph.
Ridges.............Northeast winds 15 to 20 mph.
* Mixing Height.........6000 ft agl decreasing to 500-1000 ft agl.
* Transport Winds.......Northeast 20 to 25 mph.
* CWR...................10 percent.
.SUNDAY...
* Sky/Weather...........Mostly sunny. Patchy fog in the morning.
* Chance Lightning.......0 percent.
* Max Temperature.......71-81...61-71 higher elevations.
24 hr trend......2 degrees up.
* Min Humidity..........36-46 percent...45-55 percent higher
elevations.
24 hr trend......4 percent down.
* Wind (20 FT).
Lower Elevations...North winds 10 to 15 mph.
Ridges.............Northeast winds 10 to 15 mph shifting to
the east in the afternoon.
* Mixing Height.........1000-2500 ft agl increasing to 8000 ft agl.
* Transport Winds.......Northeast 15 to 20 mph shifting to the
southeast in the afternoon.
* CWR...................0 percent.
.SUNDAY NIGHT...
* Sky/Weather...........Mostly cloudy. Chance of showers in the
evening. Slight chance of thunderstorms through the night.
Showers likely after midnight. Patchy fog after midnight.
* Chance Lightning.......20 percent.
* Min Temperature.......48-53...42-50 higher elevations.
24 hr trend......3 degrees up.
* Max Humidity..........89-99 percent.
24 hr trend......Unchanged.
* Wind (20 FT).
Lower Elevations...North winds 15 to 20 mph.
Ridges.............North winds 15 to 20 mph.
* Mixing Height.........6000 ft agl decreasing to 500-2000 ft agl.
* Transport Winds.......North 20 to 25 mph.
* CWR...................20 percent.
.LABOR DAY...
* Sky/Weather...........Mostly cloudy. Patchy fog in the morning.
Slight chance of thunderstorms in the morning. Showers through
the day. Chance of thunderstorms in the afternoon.
* Chance Lightning.......50 percent.
* Max Temperature.......59-69...48-58 higher elevations.
24 hr trend......14 degrees down.
* Min Humidity..........55-65 percent...69-79 percent higher
elevations.
24 hr trend......15 percent up...51 percent up higher
elevations.
* Wind (20 FT).
Lower Elevations...Windy. West winds 10 to 15 mph increasing
to around 25 mph in the afternoon.
Ridges.............Northwest winds 10 to 15 mph increasing to
west 20 to 25 mph in the afternoon.
* Mixing Height.........1000-2000 ft agl increasing to 6500-8000 ft
agl.
* Transport Winds.......North around 25 mph shifting to the west in
the afternoon.
* CWR...................50 percent.
.FORECAST DAYS 3 THROUGH 7......
.TUESDAY...Windy. Partly cloudy. Chance of showers. Lows in the
lower 40s. Highs in the mid 60s. West winds around 30 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 40s. Highs in the
lower 70s. Southwest winds 15 to 20 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s. Southwest winds 15 to 20 mph.
.FRIDAY...Partly cloudy. Chance of showers. Lows in the upper
40s. Highs in the upper 60s.
.SATURDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the mid 60s.
$$
MTZ117-061100-
Central and Eastern Lewis and Clark National Forest Areas-
213 PM MDT Sat Sep 5 2026
.TONIGHT...
* Sky/Weather...........Partly cloudy. Patchy fog after midnight.
* Chance Lightning.......0 percent.
* Min Temperature.......44-50.
24 hr trend......Unchanged.
* Max Humidity..........85-95 percent.
24 hr trend......Unchanged...8 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...Northeast winds 15 to 20 mph shifting to
the north after midnight.
Ridges.............Southeast winds 15 to 20 mph.
* Mixing Height.........5000 ft agl decreasing to 500-1000 ft agl.
* Transport Winds.......Northeast 20 to 25 mph.
* CWR...................0 percent.
.SUNDAY...
* Sky/Weather...........Partly sunny. Areas of fog in the morning.
* Chance Lightning.......0 percent.
* Max Temperature.......68-78.
24 hr trend......Unchanged.
* Min Humidity..........41-51 percent.
24 hr trend......16 percent up...10 percent up higher
elevations.
* Wind (20 FT).
Lower Elevations...North winds 10 to 15 mph.
Ridges.............Southeast winds 10 to 15 mph.
* Mixing Height.........1000-2500 ft agl increasing to 7000-8500 ft
agl.
* Transport Winds.......East 15 to 20 mph.
* CWR...................0 percent.
.SUNDAY NIGHT...
* Sky/Weather...........Mostly cloudy. Chance of showers and
thunderstorms in the evening, then showers and slight chance of
thunderstorms after midnight. Patchy fog after midnight.
* Chance Lightning.......50 percent.
* Min Temperature.......46-52.
24 hr trend......2 degrees up.
* Max Humidity..........89-99 percent.
24 hr trend......Unchanged...19 percent up higher elevations.
* Wind (20 FT).
Lower Elevations...North winds 10 to 15 mph.
Ridges.............North winds 10 to 15 mph.
* Mixing Height.........3000-4500 ft agl decreasing to 1000-1500 ft
agl early in the evening.
* Transport Winds.......North 15 to 20 mph.
* CWR...................50 percent.
.LABOR DAY...
* Sky/Weather...........Mostly cloudy. Patchy fog in the morning.
Slight chance of thunderstorms in the morning. Showers through
the day. Chance of thunderstorms in the afternoon.
* Chance Lightning.......50 percent.
* Max Temperature.......60-69...54-64 higher elevations.
24 hr trend......9 degrees down.
* Min Humidity..........56-66 percent.
24 hr trend......16 percent up...10 percent up higher
elevations.
* Wind (20 FT).
Lower Elevations...Windy. Northwest winds 10 to 15 mph
increasing to west around 30 mph in the afternoon.
Ridges.............Windy. West winds 10 to 15 mph increasing
to southwest around 30 mph in the afternoon.
* Mixing Height.........1500-2500 ft agl increasing to 5500-6000 ft
agl.
* Transport Winds.......Northwest around 25 mph increasing to west
around 40 mph in the afternoon.
* CWR...................60 percent.
.FORECAST DAYS 3 THROUGH 7......
.TUESDAY...Very windy. Partly cloudy. Showers likely. Lows in the
mid 40s. Highs in the lower 60s. West winds around 35 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 40s. Highs in the
lower 70s. Southwest winds 20 to 25 mph.
.THURSDAY...Windy. Mostly clear. Lows in the upper 40s. Highs in
the mid 70s. Southwest winds around 25 mph.
.FRIDAY...Partly cloudy. Chance of showers. Lows around 50. Highs
in the upper 60s.
.SATURDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the mid 60s.
$$
weather.gov/greatfalls