FNUS55 KTFX 230923 FWFTFX Fire Weather Planning Forecast for North-Central Montana National Weather Service Great Falls MT 323 AM MDT Sun Aug 23 2026 .DISCUSSION... A surface front will bring gusty westerly winds and elevated fire weather conditions today. There will also be a few stronger widely scattered showers and thunderstorms capable of producing strong winds and large hail. Thunderstorm activity will be most widespread east of I15, while the gusty non- thunderstorm winds and elevated fire weather conditions will mostly impact areas west of I15. Cooler and drier conditions move in Monday and Tuesday before temperatures warm up and shower and thunderstorm activity returns heading towards the latter part of the week. MTZ112-232215- Eastern Glacier/Toole/Central/Eastern Pondera/Liberty- 323 AM MDT Sun Aug 23 2026 .TODAY... * Sky/Weather...........Mostly sunny. Patchy smoke in the afternoon. Chance of showers and slight chance of thunderstorms in the afternoon. * Chance Lightning.......20 percent. * Max Temperature.......77-87...67-77 higher elevations. 24 hr trend......3 degrees down...10 degrees down higher elevations. * Min Humidity..........22-27 percent...28-36 percent higher elevations. 24 hr trend......7 percent down...unchanged higher elevations. * Wind (20 FT). Lower Elevations...Windy. West winds 15 to 20 mph increasing to around 25 mph in the afternoon. Ridges.............Windy. West winds 15 to 20 mph increasing to around 25 mph in the afternoon. * Mixing Height.........500-1000 ft agl increasing to 8000-8500 ft agl. * Transport Winds.......West 20 to 25 mph increasing to around 35 mph in the afternoon. * CWR...................10 percent. .TONIGHT... * Sky/Weather...........Mostly clear. Patchy smoke after midnight. * Chance Lightning.......0 percent. * Min Temperature.......49-55. 24 hr trend......8 degrees down. * Max Humidity..........61-71 percent. 24 hr trend......7 percent down...8 percent up higher elevations. * Wind (20 FT). Lower Elevations...Windy. West winds 20 to 30 mph. Ridges.............Windy. West winds 20 to 30 mph. * Mixing Height.........6500-8000 ft agl decreasing to 500-2000 ft agl early in the evening. * Transport Winds.......West 30 to 35 mph. * CWR...................0 percent. .MONDAY... * Sky/Weather...........Sunny. * Chance Lightning.......0 percent. * Max Temperature.......73-79...66-71 higher elevations. 24 hr trend......7 degrees down...unchanged higher elevations. * Min Humidity..........29-37 percent. 24 hr trend......7 percent up. * Wind (20 FT). Lower Elevations...Northwest winds 15 to 20 mph. Ridges.............Northwest winds 15 to 20 mph. * Mixing Height.........500-1000 ft agl increasing to 8000-8500 ft agl. * Transport Winds.......Northwest around 25 mph. * CWR...................0 percent. .FORECAST DAYS 3 THROUGH 7...... .TUESDAY...Mostly clear. Lows around 50. Highs in the upper 70s. Northeast winds 15 to 20 mph. .WEDNESDAY...Partly cloudy. Lows in the lower 50s. Highs in the mid 80s. Southeast winds 15 to 20 mph. .THURSDAY...Partly cloudy. Slight chance of showers. Lows in the mid 50s. Highs in the mid 80s. South winds 15 to 20 mph. .FRIDAY...Partly cloudy. Slight chance of showers. Lows in the mid 50s. Highs in the lower 80s. .SATURDAY...Mostly clear. Lows in the lower 50s. Highs in the upper 70s. $$ MTZ113-232215- Hill and Blaine Counties- 323 AM MDT Sun Aug 23 2026 .TODAY... * Sky/Weather...........Mostly sunny. Chance of showers and slight chance of thunderstorms in the afternoon. * Chance Lightning.......20 percent. * Max Temperature.......88-93...79-85 higher elevations. 24 hr trend......2 degrees up. * Min Humidity..........22-27 percent. 24 hr trend......4 percent down...9 percent down higher elevations. * 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 8000-9500 ft agl. * Transport Winds.......West 15 to 20 mph increasing to around 25 mph in the afternoon. * CWR...................10 percent. .TONIGHT... * Sky/Weather...........Partly cloudy. * Chance Lightning.......0 percent. * Min Temperature.......54-59...47-57 higher elevations. 24 hr trend......7 degrees down. * Max Humidity..........51-61 percent. 24 hr trend......15 percent down...5 percent down higher elevations. * Wind (20 FT). Lower Elevations...West winds 15 to 20 mph. Ridges.............West winds 15 to 20 mph. * Mixing Height.........4500-5500 ft agl decreasing to 500-1000 ft agl early in the evening. * Transport Winds.......West around 25 mph. * CWR...................0 percent. .MONDAY... * Sky/Weather...........Sunny. * Chance Lightning.......0 percent. * Max Temperature.......77-82...69-74 higher elevations. 24 hr trend......12 degrees down. * Min Humidity..........29-35 percent. 24 hr trend......6 percent up. * 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 7500-9000 ft agl. * Transport Winds.......West 25 to 30 mph. * CWR...................0 percent. .FORECAST DAYS 3 THROUGH 7...... .TUESDAY...Mostly clear. Lows in the lower 50s. Highs around 80. Northwest winds 20 to 25 mph. .WEDNESDAY...Mostly clear. Lows in the lower 50s. Highs in the mid 80s. East winds 15 to 20 mph. .THURSDAY...Partly cloudy. Lows in the upper 50s. Highs in the upper 80s. Southeast winds 15 to 20 mph. .FRIDAY...Partly cloudy. Slight chance of showers. Lows in the upper 50s. Highs in the mid 80s. .SATURDAY...Mostly clear. Slight chance of showers. Lows in the mid 50s. Highs in the lower 80s. $$ MTZ114-232215- Lewis and Clark National Forest Rocky Mountain District- Rocky Mountain Front- 323 AM MDT Sun Aug 23 2026 .TODAY... * Sky/Weather...........Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. * Chance Lightning.......10 percent. * Max Temperature.......78-87...63-73 higher elevations. 24 hr trend......3 degrees down...10 degrees down higher elevations. * Min Humidity..........21-28 percent...30-40 percent higher elevations. 24 hr trend......2 percent down. * Wind (20 FT). Lower Elevations...Southwest winds 10 to 15 mph increasing to west 20 to 25 mph in the afternoon. Ridges.............Windy. Southwest winds 15 to 20 mph increasing to west around 25 mph in the afternoon. * Mixing Height.........500-1500 ft agl increasing to 9500-10500 ft agl. * Transport Winds.......Southwest 20 to 25 mph increasing to around 35 mph in the afternoon. * CWR...................0 percent. .TONIGHT... * Sky/Weather...........Mostly clear. * Chance Lightning.......0 percent. * Min Temperature.......45-53. 24 hr trend......7 degrees down. * Max Humidity..........54-64 percent. 24 hr trend......18 percent down. * Wind (20 FT). Lower Elevations...West winds 20 to 30 mph. Ridges.............Windy. West winds 20 to 30 mph. * Mixing Height.........8500 ft agl decreasing to 500-1500 ft agl. * Transport Winds.......West around 40 mph decreasing to around 30 mph after midnight. * CWR...................0 percent. .MONDAY... * Sky/Weather...........Sunny. * Chance Lightning.......0 percent. * Max Temperature.......76-81...64-74 higher elevations. 24 hr trend......7 degrees down...1 degree down higher elevations. * Min Humidity..........23-33 percent. 24 hr trend......7 percent up...8 percent down higher elevations. * Wind (20 FT). Lower Elevations...West winds 10 to 15 mph shifting to the north in the afternoon. Ridges.............West winds 10 to 15 mph. * Mixing Height.........500-2000 ft agl increasing to 8000-9500 ft agl. * Transport Winds.......West 15 to 20 mph. * CWR...................0 percent. .FORECAST DAYS 3 THROUGH 7...... .TUESDAY...Mostly clear. Lows around 50. Highs in the upper 70s. Northeast winds 10 to 15 mph. .WEDNESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the lower 50s. Highs in the lower 80s. East winds 10 to 15 mph. .THURSDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the lower 80s. Southwest winds 15 to 20 mph. .FRIDAY...Partly cloudy. Slight chance of showers. Lows in the lower 50s. Highs in the upper 70s. .SATURDAY...Mostly clear. Lows in the lower 50s. Highs in the mid 70s. $$ MTZ115-232215- Chouteau and Fergus Counties- 323 AM MDT Sun Aug 23 2026 .TODAY... * Sky/Weather...........Mostly sunny. Chance of showers and slight chance of thunderstorms in the afternoon. * Chance Lightning.......20 percent. * Max Temperature.......88-94...80-87 higher elevations. 24 hr trend......2 degrees up...7 degrees up higher elevations. * Min Humidity..........21-26 percent. 24 hr trend......7 percent down. * Wind (20 FT). Lower Elevations...West winds 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Ridges.............West winds 10 to 15 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 7500-9000 ft agl early in the afternoon increasing to 8500-10000 ft agl decreasing to 7000 ft agl late in the afternoon. * Transport Winds.......West 20 to 25 mph increasing to around 30 mph in the afternoon. * CWR...................10 percent. .TONIGHT... * Sky/Weather...........Partly cloudy. * Chance Lightning.......0 percent. * Min Temperature.......54-60. 24 hr trend......9 degrees down. * Max Humidity..........47-57 percent. 24 hr trend......11 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.........4500-6000 ft agl decreasing to 500-1000 ft agl early in the evening. * Transport Winds.......West 20 to 25 mph. * CWR...................0 percent. .MONDAY... * Sky/Weather...........Sunny. * Chance Lightning.......0 percent. * Max Temperature.......78-83...69-77 higher elevations. 24 hr trend......10 degrees down. * Min Humidity..........22-32 percent. 24 hr trend......2 percent up. * Wind (20 FT). Lower Elevations...Northwest winds 15 to 20 mph. Ridges.............Northwest winds 10 to 15 mph. * Mixing Height.........500-1500 ft agl increasing to 7500-8000 ft agl. * Transport Winds.......West around 25 mph. * CWR...................0 percent. .FORECAST DAYS 3 THROUGH 7...... .TUESDAY...Mostly clear. Lows in the lower 50s. Highs in the lower 80s. North winds 15 to 20 mph. .WEDNESDAY...Partly cloudy. Lows in the mid 50s. Highs in the upper 80s. East winds 15 to 20 mph. .THURSDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the upper 50s. Highs around 90. Southeast winds 15 to 20 mph. .FRIDAY...Partly cloudy. Slight chance of showers. Lows in the upper 50s. Highs in the mid 80s. .SATURDAY...Partly cloudy. Slight chance of showers. Lows in the upper 50s. Highs in the lower 80s. $$ MTZ116-118-232215- Lincoln Ranger District of the Helena National Forest- Helena and Townsend Ranger Districts of the Helena National Forest- 323 AM MDT Sun Aug 23 2026 .TODAY... * Sky/Weather...........Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. * Chance Lightning.......20 percent. * Max Temperature.......78-86...68-78 higher elevations. 24 hr trend......2 degrees down...7 degrees down higher elevations. * Min Humidity..........23-33 percent. 24 hr trend......7 percent down. * Wind (20 FT). Lower Elevations...South winds 10 to 15 mph increasing to west 20 to 25 mph in the afternoon. Ridges.............Southwest winds 10 to 15 mph increasing to west 20 to 25 mph in the afternoon. * Mixing Height.........500-2000 ft agl increasing to 3500 ft agl late in the morning, then increasing to 6500 ft agl early in the afternoon increasing to 9000-10500 ft agl in the afternoon decreasing to 8500 ft agl. * Transport Winds.......Southwest 20 to 25 mph increasing to around 35 mph in the afternoon. * CWR...................10 percent. .TONIGHT... * Sky/Weather...........Partly cloudy. Patchy smoke. * Chance Lightning.......0 percent. * Min Temperature.......47-54. 24 hr trend......7 degrees down. * Max Humidity..........59-69 percent...49-59 percent higher elevations. 24 hr trend......35 percent down. * Wind (20 FT). Lower Elevations...West winds 10 to 20 mph. Ridges.............West winds 10 to 20 mph. * Mixing Height.........8000 ft agl decreasing to 500-1500 ft agl. * Transport Winds.......Northwest 25 to 30 mph. * CWR...................0 percent. .MONDAY... * Sky/Weather...........Mostly sunny. Patchy smoke in the morning. * Chance Lightning.......0 percent. * Max Temperature.......75-84...66-75 higher elevations. 24 hr trend......4 degrees down. * Min Humidity..........20-30 percent. 24 hr trend......4 percent up...1 percent down higher elevations. * Wind (20 FT). Lower Elevations...Southwest winds 10 to 15 mph shifting to the northwest in the afternoon. Ridges.............West winds 10 to 15 mph. * Mixing Height.........500-1500 ft agl increasing to 9500-10000 ft agl. * Transport Winds.......West 15 to 20 mph. * CWR...................0 percent. .FORECAST DAYS 3 THROUGH 7...... .TUESDAY...Mostly clear. Lows in the lower 50s. Highs in the upper 70s. North winds 10 to 15 mph. .WEDNESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the lower 80s. East winds 10 to 15 mph. .THURSDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the lower 80s. South winds 10 to 15 mph. .FRIDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the lower 50s. Highs in the upper 70s. .SATURDAY...Partly cloudy. Slight chance of showers. Lows in the lower 50s. Highs in the upper 70s. $$ MTZ117-232215- Central and Eastern Lewis and Clark National Forest Areas- 323 AM MDT Sun Aug 23 2026 .TODAY... * Sky/Weather...........Mostly sunny. Chance of showers and slight chance of thunderstorms in the afternoon. * Chance Lightning.......20 percent. * Max Temperature.......81-90...73-83 higher elevations. 24 hr trend......1 degree up. * Min Humidity..........21-31 percent. 24 hr trend......2 percent down. * 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 9000-10500 ft agl. * Transport Winds.......Southwest 20 to 25 mph increasing to west around 35 mph in the afternoon. * CWR...................10 percent. .TONIGHT... * Sky/Weather...........Partly cloudy. Patchy smoke. * Chance Lightning.......0 percent. * Min Temperature.......47-55.24 hr trend......7 degrees down. * Max Humidity..........49-59 percent. 24 hr trend......13 percent down. * Wind (20 FT). Lower Elevations...West winds 20 to 25 mph decreasing to 10 to 15 mph after midnight. Ridges.............West winds 15 to 20 mph. * Mixing Height.........8000 ft agl decreasing to 500-1000 ft agl. * Transport Winds.......West around 30 mph decreasing to 20 to 25 mph after midnight. * CWR...................0 percent. .MONDAY... * Sky/Weather...........Sunny. * Chance Lightning.......0 percent. * Max Temperature.......75-82...67-76 higher elevations. 24 hr trend......10 degrees down...5 degrees down higher elevations. * Min Humidity..........20-28 percent. 24 hr trend......2 percent up...3 percent down higher elevations. * Wind (20 FT). Lower Elevations...Northwest winds 15 to 20 mph. Ridges.............Northwest winds 15 to 20 mph. * Mixing Height.........500-1500 ft agl increasing to 7500-9000 ft agl. * Transport Winds.......West 20 to 25 mph. * CWR...................0 percent. .FORECAST DAYS 3 THROUGH 7...... .TUESDAY...Mostly clear. Lows around 50. Highs in the upper 70s. East winds 15 to 20 mph. .WEDNESDAY...Partly cloudy. Lows in the lower 50s. Highs in the lower 80s. Southeast winds 15 to 20 mph. .THURSDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the mid 80s. South winds 15 to 20 mph. .FRIDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the lower 80s. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the upper 70s. $$ weather.gov/greatfalls