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
68°F
20°C
| Humidity | 42% |
| Wind Speed | NNW 4 MPH |
| Barometer | NA |
| Dewpoint | 44°F (7°C) |
| Visibility | NA |
| Last update | 23 Jun 06:18 PM MDT |
Extended Forecast for
Big Sandy MT
Tonight
Low: 46 °F
Increasing
CloudsWednesday
High: 75 °F
Decreasing
CloudsWednesday Night
Low: 52 °F
Mostly Cloudy
Thursday
High: 77 °F
Partly Sunny
then Chance
T-stormsThursday Night
Low: 53 °F
Chance
Showers then
Mostly CloudyFriday
High: 79 °F
Partly Sunny
then Showers
LikelyFriday Night
Low: 53 °F
Showers then
Chance
ShowersSaturday
High: 73 °F
Chance
ShowersSaturday Night
Low: 50 °F
Chance
T-storms then
Showers
Likely
Detailed Forecast
Tonight
Increasing clouds, with a low around 46. North wind around 6 mph becoming calm in the evening.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 75. Light east wind.
Wednesday Night
Mostly cloudy, with a low around 52. East southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 77. Southeast wind 9 to 11 mph, with gusts as high as 21 mph.
Thursday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 53. Southeast wind around 9 mph. Chance of precipitation is 30%.
Friday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 79. Southeast wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Friday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers. Low around 53. South southeast wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 90%.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 73. Southwest wind 3 to 7 mph.
Saturday Night
A chance of showers and thunderstorms, then showers likely after midnight. Mostly cloudy, with a low around 50.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 63.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 48.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 66.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 71.
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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)
4:22 pm MDT Jun 23, 2026
7pm MDT Jun 23, 2026-6pm MDT Jun 30, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
