National Weather Service Forecast for: Dillon MT
Issued by: National Weather Service Great Falls, MT
Updated: 12:32 am MDT Jun 22, 2026
 
Overnight

Overnight: Mostly clear, with a low around 46. South wind around 6 mph becoming west.
Mostly Clear

 Monday

Monday: Sunny, with a high near 75. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.
Sunny

 Monday
Night
Monday Night: Mostly clear, with a low around 40. North northeast wind 13 to 18 mph becoming light after midnight. Winds could gust as high as 31 mph.
Mostly Clear

 Tuesday

Tuesday: Sunny, with a high near 76. North northeast wind 3 to 8 mph.
Sunny

 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 43. North northeast wind 6 to 11 mph becoming light northeast after midnight. Winds could gust as high as 20 mph.
Partly Cloudy

 Wednesday

Wednesday: Sunny, with a high near 79. Calm wind becoming north northeast around 6 mph in the afternoon.
Sunny

 Wednesday
Night
Wednesday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 46. North northeast wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 18 mph.
Slight Chance
Showers then
Mostly Clear
 Thursday

Thursday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.
Mostly Sunny
then Chance
T-storms
 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 49.
Mostly Cloudy
Lo 46 °F Hi 75 °F Lo 40 °F Hi 76 °F Lo 43 °F Hi 79 °F Lo 46 °F Hi 81 °F Lo 49 °F

 

Overnight
 
 Mostly clear, with a low around 46. South wind around 6 mph becoming west.
Monday
 
 Sunny, with a high near 75. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.
Monday Night
 
 Mostly clear, with a low around 40. North northeast wind 13 to 18 mph becoming light after midnight. Winds could gust as high as 31 mph.
Tuesday
 
 Sunny, with a high near 76. North northeast wind 3 to 8 mph.
Tuesday Night
 
 Partly cloudy, with a low around 43. North northeast wind 6 to 11 mph becoming light northeast after midnight. Winds could gust as high as 20 mph.
Wednesday
 
 Sunny, with a high near 79. Calm wind becoming north northeast around 6 mph in the afternoon.
Wednesday Night
 
 A 20 percent chance of showers before midnight. Partly cloudy, with a low around 46. North northeast wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 18 mph.
Thursday
 
 A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
 
 Mostly cloudy, with a low around 49.
Friday
 
 A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 82. Breezy.
Friday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Breezy.
Saturday
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 66.
Saturday Night
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 37.
Sunday
 
 A chance of showers and thunderstorms. Partly sunny, with a high near 61.

 

Forecast from NOAA-NWS for Dillon MT.