News Headlines
- This Saturday, June 27: Great Falls Disaster Response Expo - FREE and Family-Friendly Event, Great Falls College at MSU
- SCN26-50: Discontinuation of the State Forecast Product (SFP) for all NWS Central Region, Southern Region, and Western Region Offices: Effective June 29, 2026
- The Regional Temperatures and Precipitation Product for the State of Montana (RTPMT) will now be discontinued on July 7, 2026.
Current conditions at
ROCKY BOY (RCBM8)
Lat: 48.25529°NLon: 109.78592°WElev: 3789.0ft.NA
50°F
10°C
| Humidity | 91% |
| Wind Speed | S 1 MPH |
| Barometer | NA |
| Dewpoint | 47°F (8°C) |
| Visibility | NA |
| Last update | 25 Jun 10:18 PM MDT |
Extended Forecast for
Big Sandy MT
Tonight
Low: 53 °F
Mostly Cloudy
Friday
High: 79 °F
Mostly Cloudy
then Showers
LikelyFriday Night
Low: 52 °F
Showers then
Chance
ShowersSaturday
High: 73 °F
Chance
ShowersSaturday Night
Low: 49 °F
Showers
LikelySunday
High: 65 °F
Showers
LikelySunday Night
Low: 46 °F
Showers
LikelyMonday
High: 63 °F
Showers
Monday Night
Low: 47 °F
Chance
Showers
Detailed Forecast
Tonight
Mostly cloudy, with a low around 53. East southeast wind 3 to 8 mph.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 79. Light and variable wind becoming south southeast 5 to 9 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms before 4am, then a chance of showers. Low around 52. South southwest wind 3 to 7 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
A chance of showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 73. West southwest wind 5 to 7 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms, then showers likely after midnight. Mostly cloudy, with a low around 49. West southwest wind 3 to 6 mph. Chance of precipitation is 60%.
Sunday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 65. Southwest wind 7 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 46. Southwest wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.
Monday
Showers. Cloudy, with a high near 63. West southwest wind 16 to 20 mph, with gusts as high as 33 mph.
Monday Night
A chance of showers, mainly before midnight. Mostly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
Mostly sunny, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 84.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Big Sandy MT
48.18°N 110.11°W (Elev. 2759 ft)
48.18°N 110.11°W (Elev. 2759 ft)
12:31 pm MDT Jun 25, 2026
10pm MDT Jun 25, 2026-6pm MDT Jul 2, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
