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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

Karst US-191 MP 55.3 (MTKAR)

Lat: 45.34534°NLon: 111.17261°WElev: 5699.0ft.

unknown precip

50°F

10°C

Humidity	60%
Wind Speed	SSE 1 MPH
Barometer	NA
Dewpoint	37°F (3°C)
Visibility	NA
Last update	17 Jun 09:15 PM MDT

More Information:

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

Extended Forecast for

13 Miles ESE Big Sky MT

Tonight
Low: 37 °F
Mostly Clear
Thursday
High: 58 °F
Sunny
Thursday Night
Low: 39 °F
Increasing
Clouds
Juneteenth
High: 64 °F
Mostly Sunny
Friday Night
Low: 47 °F
Mostly Cloudy
Saturday
High: 55 °F
Chance
Showers then
Showers
Saturday Night
Low: 41 °F
Showers
Likely then
Slight Chance
Showers
Sunday
High: 56 °F
Slight Chance
Showers then
Chance
T-storms
Sunday Night
Low: 39 °F
Slight Chance
T-storms then
Partly Cloudy

Detailed Forecast

Tonight

Mostly clear, with a low around 37. North northwest wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 20 mph.

Thursday

Sunny, with a high near 58. West wind 7 to 17 mph, with gusts as high as 29 mph.

Thursday Night

Increasing clouds, with a low around 39. Northwest wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 29 mph.

Juneteenth

Mostly sunny, with a high near 64. South wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

Friday Night

Mostly cloudy, with a low around 47. Northwest wind 5 to 10 mph becoming south in the evening. Winds could gust as high as 18 mph.

Saturday

A chance of showers, then showers and possibly a thunderstorm after noon. High near 55. West southwest wind 6 to 8 mph. Chance of precipitation is 90%.

Saturday Night

Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 41. West southwest wind around 7 mph. Chance of precipitation is 70%.

Sunday

A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 56. West northwest wind 5 to 10 mph.

Sunday Night

A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 39.

Monday

A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 56.

Monday Night

Mostly clear, with a low around 39.

Tuesday

Sunny, with a high near 62.

Tuesday Night

Mostly clear, with a low around 43.

Wednesday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 64.