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

MOUNT LOCKHART (MTKM8)

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

59°F

15°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

29 Miles SSW Heart Butte MT

Tonight
Low: 40 °F
Mostly Clear
Saturday
High: 61 °F
Mostly Sunny
Saturday Night
Low: 41 °F
Partly Cloudy
Sunday
High: 52 °F
Sunny then
Showers
Likely
Sunday Night
Low: 37 °F
Chance
Showers then
Mostly Cloudy
Monday
High: 51 °F
Slight Chance
Rain/Snow
then Chance
Showers
Monday Night
Low: 35 °F
Mostly Clear
Tuesday
High: 61 °F
Sunny
Tuesday Night
Low: 41 °F
Mostly Clear

Detailed Forecast

Tonight

Mostly clear, with a low around 40. South southeast wind 8 to 14 mph, with gusts as high as 20 mph.

Saturday

Mostly sunny, with a high near 61. West wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.

Saturday Night

Partly cloudy, with a low around 41. West wind 16 to 21 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 31 mph.

Sunday

Showers likely and possibly a thunderstorm, mainly after 3pm. Increasing clouds, with a high near 52. Southwest wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

Sunday Night

A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 37. West northwest wind 8 to 13 mph becoming north after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 50%.

Monday

A slight chance of rain showers before 9am, then a slight chance of rain and snow showers between 9am and noon, then a chance of rain showers after noon. Some thunder is also possible. Partly sunny, with a high near 51. North northeast wind around 9 mph becoming northwest in the afternoon. Chance of precipitation is 40%. Little or no snow accumulation expected.

Monday Night

Mostly clear, with a low around 35. North northeast wind 5 to 8 mph becoming south southeast after midnight.

Tuesday

Sunny, with a high near 61. East southeast wind 5 to 8 mph.

Tuesday Night

Mostly clear, with a low around 41.

Wednesday

Mostly sunny, with a high near 65.

Wednesday Night

Partly cloudy, with a low around 45.

Thursday

Mostly sunny, with a high near 66.