FPUS65 KTFX 180633
AFPTFX

Central and Southwest Montana Area Forecast
National Weather Service Great Falls MT
1233 AM MDT Mon May 18 2026

MTZ301>314-316>318-191200-
Central Montana-
National Weather Service Great Falls MT
1233 AM MDT Mon May 18 2026


.REST OF TONIGHT...Partly cloudy. Slight chance of snow after
midnight. Patchy fog. Highs 45 to 55...35 to 45 in the mountains.
Lows 25 to 30. 
.TUESDAY...Increasing clouds. Highs 60 to 65...45 to 55 in the
mountains. 
.TUESDAY NIGHT...Mostly cloudy in the evening then becoming
partly cloudy. Lows 35 to 40. 
.WEDNESDAY...Mostly cloudy. Chance of rain. Highs 55 to 65. 
.THURSDAY...Partly cloudy. Chance of rain. Lows 35 to 40. 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. 

$$

MTZ315-319>330-191200-
Southwest Montana-
National Weather Service Great Falls MT
1233 AM MDT Mon May 18 2026


.REST OF TONIGHT...Partly cloudy. Slight chance of snow. Highs
40 to 50...30 to 40 in the mountains. Lows 20 to 30...15 to 25 in
the mountains. 
.TUESDAY...Increasing clouds. Slight chance of snow in the
afternoon. Highs 50 to 60...40 to 50 in the mountains. 
.TUESDAY NIGHT...Partly cloudy. Lows 25 to 35. 
.WEDNESDAY...Mostly cloudy. Rain showers likely and slight chance
of thunderstorms. Highs 50 to 60. 
.THURSDAY...Partly cloudy. Chance of rain and snow. Lows 30 to
35. Highs 50 to 60. 
.FRIDAY...Partly cloudy. Lows 30 to 40. Highs 55 to 65. 
.SATURDAY...Partly cloudy. Lows 35 to 40. Highs 65 to 75. 

$$