National Weather Service Forecast for: Dillon MT
Issued by: National Weather Service Great Falls, MT
Updated: 1:14 am MDT Jul 16, 2026
 
This
Afternoon
This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Light and variable wind becoming east around 5 mph.
Slight Chance
T-storms

 Tonight

Tonight: A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 57. North northeast wind around 6 mph becoming light and variable after midnight.
Slight Chance
T-storms then
Partly Cloudy
 Friday

Friday: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Some of the storms could be severe. Partly sunny, with a high near 90. Calm wind becoming south around 6 mph in the afternoon.
Mostly Sunny
then Severe
T-Storms
 Friday
Night
Friday Night: Showers likely and possibly a thunderstorm before midnight. Some of the storms could be severe. Cloudy, then gradually becoming partly cloudy, with a low around 56. Southwest wind 5 to 7 mph becoming southeast in the evening. Chance of precipitation is 60%.
Severe
T-Storms
then Partly
Cloudy
 Saturday

Saturday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 91. South southwest wind around 5 mph becoming calm.
Sunny then
Chance
T-storms
 Saturday
Night
Saturday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 56. West wind 5 to 7 mph becoming north northeast in the evening. Chance of precipitation is 20%.
Slight Chance
T-storms then
Mostly Clear
 Sunday

Sunday: Sunny, with a high near 91. Calm wind becoming west southwest around 6 mph in the afternoon.
Sunny

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 55. West northwest wind 5 to 7 mph becoming light and variable after midnight.
Partly Cloudy

 Monday

Monday: Mostly sunny, with a high near 89.
Mostly Sunny
Hi 89 °F Lo 57 °F Hi 90 °F Lo 56 °F Hi 91 °F Lo 56 °F Hi 91 °F Lo 55 °F Hi 89 °F

 

This Afternoon
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Light and variable wind becoming east around 5 mph.
Tonight
 
 A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 57. North northeast wind around 6 mph becoming light and variable after midnight.
Friday
 
 A 50 percent chance of showers and thunderstorms, mainly after 2pm. Some of the storms could be severe. Partly sunny, with a high near 90. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
 
 Showers likely and possibly a thunderstorm before midnight. Some of the storms could be severe. Cloudy, then gradually becoming partly cloudy, with a low around 56. Southwest wind 5 to 7 mph becoming southeast in the evening. Chance of precipitation is 60%.
Saturday
 
 A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 91. South southwest wind around 5 mph becoming calm.
Saturday Night
 
 A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 56. West wind 5 to 7 mph becoming north northeast in the evening. Chance of precipitation is 20%.
Sunday
 
 Sunny, with a high near 91. Calm wind becoming west southwest around 6 mph in the afternoon.
Sunday Night
 
 Partly cloudy, with a low around 55. West northwest wind 5 to 7 mph becoming light and variable after midnight.
Monday
 
 Mostly sunny, with a high near 89.
Monday Night
 
 A chance of showers, mainly after midnight. Mostly cloudy, with a low around 55.
Tuesday
 
 A chance of showers and thunderstorms. Partly sunny, with a high near 83.
Tuesday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Wednesday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 83.

 

Forecast from NOAA-NWS for Dillon MT.