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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.

25°F

-4°C

Humidity	77%
Wind Speed	WNW 8 MPH
Barometer	NA
Dewpoint	19°F (-7°C)
Visibility	NA
Wind Chill	16°F (-9°C)
Last update	16 Apr 12:18 PM MDT

More Information:

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

Extended Forecast for

4 Miles SW Box Elder MT

This Afternoon
High: 34 °F
Partly Sunny
Tonight
Low: 18 °F
Slight Chance
Snow then
Mostly Cloudy
Friday
High: 45 °F
Patchy Fog
then Mostly
Sunny
Friday Night
Low: 26 °F
Mostly Cloudy
Saturday
High: 60 °F
Sunny
Saturday Night
Low: 30 °F
Mostly Clear
Sunday
High: 68 °F
Sunny
Sunday Night
Low: 40 °F
Partly Cloudy
Monday
High: 73 °F
Sunny

Detailed Forecast

This Afternoon

Partly sunny, with a high near 34. Northwest wind around 14 mph, with gusts as high as 24 mph.

Tonight

A slight chance of snow between 10pm and midnight. Mostly cloudy, with a low around 18. Northwest wind 5 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

Friday

Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 45. Northwest wind 5 to 10 mph, with gusts as high as 18 mph.

Friday Night

Mostly cloudy, with a low around 26. 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 60. Light and variable wind becoming west southwest 5 to 7 mph in the morning.

Saturday Night

Mostly clear, with a low around 30. West wind 5 to 7 mph becoming light and variable after midnight.

Sunday

Sunny, with a high near 68. Southwest wind 3 to 7 mph.

Sunday Night

Partly cloudy, with a low around 40. South wind 5 to 7 mph.