National Weather Service

News Headlines

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.

32°F

0°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

16 Miles SSW Lloyd MT

Juneteenth
High: 63 °F
Sunny
Tonight
Low: 47 °F
Decreasing
Clouds
Saturday
High: 71 °F
Partly Sunny
Saturday Night
Low: 50 °F
Chance
T-storms then
Chance
Showers
Sunday
High: 61 °F
Mostly Sunny
Sunday Night
Low: 42 °F
Slight Chance
Showers
Monday
High: 55 °F
Chance
Showers
Monday Night
Low: 41 °F
Slight Chance
Showers then
Mostly Clear
Tuesday
High: 65 °F
Sunny

Detailed Forecast

Juneteenth

Sunny, with a high near 63. North northwest wind 5 to 7 mph becoming southeast in the afternoon.

Tonight

Mostly cloudy, then gradually becoming mostly clear, with a low around 47. East southeast wind 8 to 15 mph, with gusts as high as 25 mph.

Saturday

Partly sunny, with a high near 71. East southeast wind 11 to 15 mph, with gusts as high as 26 mph.

Saturday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Southeast wind 6 to 9 mph becoming north northwest after midnight. Chance of precipitation is 50%.

Sunday

Mostly sunny, with a high near 61. West northwest wind 14 to 16 mph, with gusts as high as 28 mph.

Sunday Night

A 20 percent chance of showers. Partly cloudy, with a low around 42. Northwest wind 13 to 16 mph, with gusts as high as 26 mph.

Monday

A 40 percent chance of showers, mainly after noon. Partly sunny, with a high near 55. West northwest wind 16 to 18 mph, with gusts as high as 30 mph.

Monday Night

A slight chance of showers before midnight. Mostly clear, with a low around 41. Northwest wind 11 to 16 mph becoming light north northwest after midnight. Winds could gust as high as 28 mph.

Tuesday

Sunny, with a high near 65.

Tuesday Night

Partly cloudy, with a low around 48.

Wednesday

Mostly sunny, with a high near 71.

Wednesday Night

Partly cloudy, with a low around 51.

Thursday

A chance of showers and thunderstorms. Mostly sunny, with a high near 74.