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.

Hazardous Weather Conditions

Short Term Forecast

Current conditions at

MOUNT LOCKHART (MTKM8)

Lat: 47.91727°NLon: 112.8238°WElev: 6400.0ft.

50°F

10°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

26 Miles SSW Heart Butte MT

This Afternoon
High: 59 °F
Chance
Showers
Tonight
Low: 35 °F
Chance
Showers then
Patchy Fog
Juneteenth
High: 66 °F
Mostly Sunny
Friday Night
Low: 39 °F
Partly Cloudy
Saturday
High: 70 °F
Mostly Sunny
Saturday Night
Low: 40 °F
Slight Chance
Showers then
Partly Cloudy
Sunday
High: 60 °F
Slight Chance
Showers then
Showers
Likely
Sunday Night
Low: 36 °F
Showers
Likely then
Mostly Cloudy
Monday
High: 59 °F
Chance
Showers

Detailed Forecast

This Afternoon

A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 59. West northwest wind around 8 mph.

Tonight

A 30 percent chance of showers before 9pm. Patchy fog between 4am and 5am. Otherwise, partly cloudy, with a low around 35. North wind around 6 mph becoming calm in the evening.

Juneteenth

Mostly sunny, with a high near 66. South southeast wind 3 to 8 mph.

Friday Night

Partly cloudy, with a low around 39. South southeast wind around 6 mph becoming calm after midnight.

Saturday

Mostly sunny, with a high near 70. Light and variable wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 24 mph.

Saturday Night

A 20 percent chance of showers before midnight. Partly cloudy, with a low around 40. West wind 5 to 10 mph becoming light west northwest after midnight. Winds could gust as high as 25 mph.

Sunday

A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 60. Calm wind becoming west northwest 5 to 8 mph in the morning. Chance of precipitation is 60%.

Sunday Night

Showers likely and possibly a thunderstorm before midnight. Mostly cloudy, with a low around 36. North northwest wind 5 to 8 mph becoming calm after midnight.

Monday

A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 59.

Monday Night

Mostly clear, with a low around 35.

Tuesday

Sunny, with a high near 69.

Tuesday Night

Partly cloudy, with a low around 41.

Wednesday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 73.