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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

18 Miles SSW Lloyd MT

Overnight
Low: 45 °F
Slight Chance
Showers
Thursday
High: 62 °F
Showers
Likely
Thursday Night
Low: 43 °F
Chance
Showers then
Partly Cloudy
Juneteenth
High: 67 °F
Sunny
Friday Night
Low: 51 °F
Mostly Cloudy
Saturday
High: 72 °F
Mostly Sunny
Saturday Night
Low: 51 °F
Showers
Likely
Sunday
High: 65 °F
Mostly Sunny
then Slight
Chance
T-storms
Sunday Night
Low: 45 °F
Partly Cloudy
then Slight
Chance
Showers

Detailed Forecast

Overnight

A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 45. West northwest wind 3 to 5 mph.

Thursday

A chance of showers and thunderstorms before 11am, then showers likely and possibly a thunderstorm between 11am and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 62. West northwest wind 5 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

A 40 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 43. Northwest wind 5 to 14 mph, with gusts as high as 24 mph.

Juneteenth

Sunny, with a high near 67. Calm wind becoming east southeast 5 to 7 mph in the afternoon.

Friday Night

Mostly cloudy, with a low around 51. East wind 9 to 13 mph, with gusts as high as 24 mph.

Saturday

Mostly sunny, with a high near 72. East wind 11 to 15 mph, with gusts as high as 25 mph.

Saturday Night

Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 51. Southeast wind 8 to 13 mph becoming northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 60%.

Sunday

A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 65. West northwest wind 10 to 14 mph, with gusts as high as 24 mph.

Sunday Night

A slight chance of showers after midnight. Partly cloudy, with a low around 45.

Monday

A slight chance of showers after noon. Mostly sunny, with a high near 62.

Monday Night

Mostly clear, with a low around 45.

Tuesday

Sunny, with a high near 70.

Tuesday Night

Partly cloudy, with a low around 51.

Wednesday

A chance of showers and thunderstorms. Mostly sunny, with a high near 72.