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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 (ROCM8)

Lat: 48.17478°NLon: 109.64728°WElev: 4700.0ft.

38°F

3°C

Humidity	NA
Wind Speed	NA NA MPH
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	NA

More Information:

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

Extended Forecast for

11 Miles ESE Rocky Boy MT

Overnight
Low: 40 °F
Slight Chance
Showers
Thursday
High: 57 °F
Showers
Thursday Night
Low: 38 °F
Chance
Showers then
Partly Cloudy
Juneteenth
High: 63 °F
Sunny
Friday Night
Low: 46 °F
Mostly Cloudy
Saturday
High: 69 °F
Mostly Sunny
Saturday Night
Low: 46 °F
Showers
Likely
Sunday
High: 60 °F
Partly Sunny
then Chance
Showers
Sunday Night
Low: 39 °F
Partly Cloudy
then Slight
Chance
Showers

Detailed Forecast

Overnight

A 20 percent chance of showers after 4am. Partly cloudy, with a low around 40. Light west wind.

Thursday

Showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. High near 57. Northwest wind 5 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 38. Northwest wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 28 mph.

Juneteenth

Sunny, with a high near 63. Light and variable wind becoming east southeast 5 to 7 mph in the morning.

Friday Night

Mostly cloudy, with a low around 46. East southeast wind 9 to 14 mph, with gusts as high as 29 mph.

Saturday

Mostly sunny, with a high near 69. Southeast wind 14 to 17 mph, with gusts as high as 30 mph.

Saturday Night

Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 46. South southeast wind 8 to 14 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

Sunday

A chance of showers and thunderstorms after noon. Partly sunny, with a high near 60. West northwest wind 9 to 15 mph, with gusts as high as 25 mph.

Sunday Night

A slight chance of showers after midnight. Partly cloudy, with a low around 39.

Monday

A slight chance of showers after noon. Mostly sunny, with a high near 58.

Monday Night

Mostly clear, with a low around 40.

Tuesday

Sunny, with a high near 66.

Tuesday Night

Partly cloudy, with a low around 46.