FLUS45 KMSO 181821
AFPMSO

Area Forecast for Montana west of the Continental Divide
National Weather Service Missoula MT
1221 PM MDT Mon May 18 2026

MTZ001>007-043-191500-
West of the Continental Divide-
National Weather Service Missoula MT
1221 PM MDT Mon May 18 2026

...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM MDT
TUESDAY for Flathead/Mission Valleys...Lower Clark Fork
Region...Missoula/Bitterroot Valleys...Bitterroot/Sapphire
Mountains...

.TONIGHT...Partly cloudy with a slight chance of rain. Widespread
frost. Lows in the mid 20s to lower 30s. 
.TUESDAY...Partly cloudy with a chance of rain showers and a
slight chance of thunderstorms. Areas of frost. Highs in the 60s.
.TUESDAY NIGHT...Partly cloudy. 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 with a chance of rain. Lows in the 30s.
Highs in the 60s. 
.FRIDAY...Partly cloudy. Lows in the 30s to lower 40s. Highs in
the upper 60s to mid 70s. 
.SATURDAY...Partly cloudy. Lows in the mid 30s to lower 40s.
Highs in the 70s. 

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