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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

39°F

4°C

Humidity	90%
Wind Speed	WSW 0 MPH
Barometer	NA
Dewpoint	36°F (2°C)
Visibility	NA
Last update	19 Jun 04:30 AM MDT

More Information:

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

Extended Forecast for

12 Miles ENE Big Sky MT

Juneteenth
High: 68 °F
Mostly Cloudy
Tonight
Low: 48 °F
Mostly Cloudy
Saturday
High: 64 °F
Chance
Showers then
Showers
Saturday Night
Low: 46 °F
Showers then
Mostly Cloudy
Sunday
High: 63 °F
Slight Chance
Showers then
Chance
T-storms
Sunday Night
Low: 42 °F
Chance
Showers then
Mostly Cloudy
Monday
High: 59 °F
Mostly Sunny
then Slight
Chance
T-storms
Monday Night
Low: 40 °F
Mostly Clear
Tuesday
High: 69 °F
Sunny

Detailed Forecast

Juneteenth

Mostly cloudy, with a high near 68. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

Tonight

Mostly cloudy, with a low around 48. North northwest wind around 6 mph becoming light and variable after midnight.

Saturday

Showers and thunderstorms before 4pm, then showers and possibly a thunderstorm, mainly after 4pm. High near 64. Calm wind becoming south southwest around 6 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Showers and possibly a thunderstorm before 9pm, then showers between 9pm and midnight. Low around 46. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.

Sunday

A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 63. Calm wind becoming west northwest 5 to 8 mph in the afternoon. Chance of precipitation is 40%.

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 42. Northwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 30%.

Monday

A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 59. Calm wind becoming north northwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

Monday Night

Mostly clear, with a low around 40. North northwest wind 5 to 8 mph becoming calm in the evening.

Tuesday

Sunny, with a high near 69.

Tuesday Night

Mostly clear, with a low around 46.

Wednesday

Mostly sunny, with a high near 71.

Wednesday Night

Partly cloudy, with a low around 48.

Thursday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 71.