513 

FPUS65 KTFX 232138

AFPTFX



Central and Southwest Montana Area Forecast

National Weather Service Great Falls MT

337 PM MDT Sun Aug 23 2026



MTZ301>314-316>318-241200-

Central Montana-

National Weather Service Great Falls MT

337 PM MDT Sun Aug 23 2026



...SEVERE THUNDERSTORM WATCH 617 IN EFFECT UNTIL 7 PM MDT THIS

EVENING FOR East Glacier Park Region...Northern High

Plains...Eastern Glacier, Western Toole, and Central

Pondera...Eastern Toole and Liberty...Hill County...Northern

Blaine County...Southern Rocky Mountain Front...Southern High

Plains...Eastern Pondera and Eastern Teton...Western and Central

Chouteau County...Bears Paw Mountains and Southern

Blaine...Cascade County below 5000ft...Judith Basin County and

Judith Gap...Fergus County below 4500ft...Gates of the

Mountains...Little Belt and Highwood Mountains...Snowy and Judith

Mountains...



.TONIGHT...Mostly clear. Slight chance of thunderstorms in the

evening. Some thunderstorms may be severe. Lows 50 to 60...45 to

55 in the mountains. 

.MONDAY...Sunny. Highs 75 to 80...65 to 75 in the mountains. 

.MONDAY NIGHT...Mostly clear. Lows 50 to 55...45 to 50 in the

mountains. 

.TUESDAY...Mostly clear. Highs 75 to 85. 

.WEDNESDAY...Partly cloudy. Lows 50 to 55. Highs 80 to 90. 

.THURSDAY...Partly cloudy. Slight chance of showers. Lows 55 to

60. Highs 85 to 95. 

.FRIDAY...Mostly clear. Lows 50 to 60. Highs 80 to 90. 



$$



MTZ315-319>330-241200-

Southwest Montana-

National Weather Service Great Falls MT

337 PM MDT Sun Aug 23 2026



...SEVERE THUNDERSTORM WATCH 617 IN EFFECT UNTIL 7 PM MDT THIS

EVENING FOR Big Belt, Bridger and Castle Mountains...Meagher

County Valleys...Elkhorn and Boulder Mountains...Canyon Ferry

Area...Missouri Headwaters...Madison River Valley...Gallatin

Valley...Beaverhead and Western Madison below 6000ft...Ruby

Mountains and Southern Beaverhead Mountains...Gallatin and

Madison County Mountains and Centennial Mountains...



.TONIGHT...Mostly clear. Slight chance of thunderstorms in the

evening. Patchy smoke through the night. Some thunderstorms may

be severe. Lows 45 to 50. 

.MONDAY...Sunny. Patchy smoke. Highs 75 to 85...65 to 75 in the

mountains. 

.MONDAY NIGHT...Mostly cloudy. Patchy smoke in the evening. Lows

45 to 55. 

.TUESDAY...Partly cloudy. Slight chance of showers and

thunderstorms. Highs 70 to 80. 

.WEDNESDAY...Mostly cloudy. Chance of rain showers and slight

chance of thunderstorms. Lows 50 to 55. Highs 75 to 85. 

.THURSDAY...Partly cloudy. Slight chance of showers and

thunderstorms. Lows 50 to 55. Highs 75 to 85. 

.FRIDAY...Partly cloudy. Lows 45 to 55. Highs 75 to 85. 



$$








176 

FLUS45 KGGW 232153

AFPGGW



Northeast Montana Area Forecast

National Weather Service Glasgow MT

352 PM MDT Sun Aug 23 2026



MTZ016>027-059>062-241200-

Northeast Montana-

352 PM MDT Sun Aug 23 2026



...SEVERE THUNDERSTORM WATCH 620 IN EFFECT UNTIL 10 PM MDT THIS

EVENING...



.TONIGHT...Partly cloudy. A slight chance of showers and

thunderstorms in the evening. Some thunderstorms may be severe.

Lows near 60. 

.MONDAY...Sunny. Highs in the lower to mid 80s. 

.MONDAY NIGHT...Mostly clear. Lows in the mid to upper 50s. 

.TUESDAY...Partly cloudy in the morning then becoming mostly

clear. Highs in the lower to mid 80s. 

.WEDNESDAY...Mostly clear. Highs in the 80s. Lows in the 50s. 

.THURSDAY...Partly cloudy with a slight chance of showers. Highs

near 90. Lows in the mid 50s to lower 60s. 

.FRIDAY...Partly cloudy with a slight chance of showers and

thunderstorms. Highs in the mid 80s to lower 90s. Lows near 60. 



$$