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The Regional Temperatures and Precipitation Product for the State of Montana (RTPMT) will be discontinued on May 6, 2026.

Current conditions at

ROCKY BOY (RCBM8)

Lat: 48.25529°NLon: 109.78592°WElev: 3789.0ft.

23°F

-5°C

Humidity	84%
Wind Speed	WNW 9 MPH
Barometer	NA
Dewpoint	19°F (-7°C)
Visibility	NA
Wind Chill	13°F (-11°C)
Last update	16 Apr 11:18 AM MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

4 Miles ESE Big Sandy MT

Today
High: 36 °F
Slight Chance
Snow Showers
Tonight
Low: 18 °F
Chance Snow
Showers
Friday
High: 44 °F
Mostly Sunny
Friday Night
Low: 25 °F
Partly Cloudy
Saturday
High: 57 °F
Sunny
Saturday Night
Low: 31 °F
Mostly Clear
Sunday
High: 67 °F
Sunny
Sunday Night
Low: 40 °F
Partly Cloudy
Monday
High: 71 °F
Mostly Sunny

Detailed Forecast

Today

A 20 percent chance of snow showers after 5pm. Partly sunny, with a high near 36. Northwest wind around 14 mph, with gusts as high as 24 mph.

Tonight

A 30 percent chance of snow showers, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 18. Northwest wind 6 to 15 mph, with gusts as high as 23 mph. Little or no snow accumulation expected.

Friday

Mostly sunny, with a high near 44. Northwest wind 6 to 9 mph.

Friday Night

Partly cloudy, with a low around 25. North northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.

Saturday

Sunny, with a high near 57. Light and variable wind becoming west 5 to 8 mph in the morning.

Saturday Night

Mostly clear, with a low around 31. West wind 5 to 7 mph becoming south southeast in the evening.

Sunday

Sunny, with a high near 67. South southeast wind 5 to 7 mph.

Sunday Night

Partly cloudy, with a low around 40. South wind around 7 mph.