918 

FLUS45 KMSO 190621

AFPMSO



Area Forecast for Montana west of the Continental Divide

National Weather Service Missoula MT

1221 AM MDT Tue May 19 2026



MTZ001>007-043-200300-

West of the Continental Divide-

National Weather Service Missoula MT

1221 AM MDT Tue May 19 2026



...FROST ADVISORY IN EFFECT UNTIL 9 AM MDT THIS MORNING for

Flathead/Mission Valleys...Lower Clark Fork

Region...Missoula/Bitterroot Valleys...Bitterroot/Sapphire

Mountains...



.TODAY...Mostly cloudy with a chance of rain showers and a slight

chance of thunderstorms. Areas of frost. Highs in the 60s. 

.TONIGHT...Mostly cloudy with a slight chance of rain. Lows in

the 30s. 

.WEDNESDAY...Mostly cloudy. A chance of rain in the morning, then

rain showers likely in the afternoon and evening. Highs in the

60s. 

.THURSDAY...Partly cloudy. A chance of rain. Lows in the 30s.

Highs in the 60s to lower 70s. 

.FRIDAY...Partly cloudy. Lows in the mid 30s to lower 40s. Highs

in the upper 60s to mid 70s. 

.SATURDAY...Partly cloudy. Lows in the upper 30s to mid 40s.

Highs in the 70s. 



$$








282 

FPUS65 KTFX 190634

AFPTFX



Central and Southwest Montana Area Forecast

National Weather Service Great Falls MT

1233 AM MDT Tue May 19 2026



MTZ301>314-316>318-201200-

Central Montana-

National Weather Service Great Falls MT

1233 AM MDT Tue May 19 2026





.REST OF TONIGHT...Partly cloudy. Chance of rain showers and

slight chance of thunderstorms in the afternoon. Slight chance of

rain in the evening. Highs 60 to 65...45 to 55 in the mountains.

Lows 25 to 40. 

.WEDNESDAY...Cloudy. Chance of rain in the morning. Slight chance

of thunderstorms in the afternoon. Highs 55 to 60...45 to 55 in

the mountains. 

.WEDNESDAY NIGHT...Mostly cloudy. Chance of rain through the

night. Lows 35 to 40...30 to 35 in the mountains. 

.THURSDAY...Partly cloudy. Chance of rain. Highs 55 to 65. 

.FRIDAY...Partly cloudy. Lows 35 to 40. Highs 60 to 70. 

.SATURDAY...Partly cloudy. Lows 40 to 45. Highs 70 to 80. 

.SUNDAY...Partly cloudy. Lows 45 to 50. Highs 70 to 80. 



$$



MTZ315-319>330-201200-

Southwest Montana-

National Weather Service Great Falls MT

1233 AM MDT Tue May 19 2026





.REST OF TONIGHT...Partly cloudy. Slight chance of rain and snow

in the afternoon and evening. Highs 55 to 60...45 to 55 in the

mountains. Lows 25 to 40...20 to 35 in the mountains. 

.WEDNESDAY...Mostly cloudy. Slight chance of thunderstorms in the

afternoon. Highs 55 to 65...45 to 55 in the mountains. 

.WEDNESDAY NIGHT...Mostly cloudy. Rain showers and slight chance

of thunderstorms in the evening. Snow through the night. Rain

after midnight. Lows 30 to 40. 

.THURSDAY...Partly cloudy. Chance of rain and snow. Highs 50 to

60. 

.FRIDAY...Partly cloudy. Lows 30 to 35. Highs 55 to 65. 

.SATURDAY...Partly cloudy. Lows 35 to 40. Highs 65 to 75. 

.SUNDAY...Partly cloudy. Lows 40 to 45. Highs 65 to 75. 



$$








809 

FLUS45 KGGW 190642

AFPGGW



Northeast Montana Area Forecast

National Weather Service Glasgow MT

1242 AM MDT Tue May 19 2026



MTZ016>027-059>062-201200-

Northeast Montana-

1242 AM MDT Tue May 19 2026



.REST OF TONIGHT...Partly cloudy. Highs in the lower to mid 60s.

Lows in the 30s. 

.WEDNESDAY...Mostly cloudy. A chance of rain showers and a slight

chance of thunderstorms in the afternoon. Highs in the mid 60s to

lower 70s. 

.WEDNESDAY NIGHT...Mostly cloudy with a chance of rain showers.

Lows near 40. 

.THURSDAY...Mostly cloudy. A chance of rain showers in the

morning, then a slight chance of rain showers in the afternoon

and evening. Highs in the lower to mid 60s. 

.FRIDAY...Partly cloudy. Highs near 70. Lows near 40. 

.SATURDAY...Partly cloudy. Highs in the mid to upper 70s. Lows in

the lower to mid 40s. 

.SUNDAY...Partly cloudy. Highs near 80. Lows in the mid 40s to

lower 50s. 



$$