Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

Sioux Pass MT-16 MP 21 (MTSOO)

Lat: 47.91973°NLon: 104.32619°WElev: 2480.0ft.

NA

43°F

6°C

Humidity 42%
Wind Speed NNW 8 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Wind Chill38°F (3°C)
Last update 18 Apr 03:15 PM MDT
Extended Forecast for

8 Miles NNE Lambert MT

  • This Afternoon

    This Afternoon: A 20 percent chance of showers.  Mostly cloudy, with a high near 49. Northwest wind around 21 mph, with gusts as high as 32 mph.

    High: 49 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 23. Northwest wind 15 to 20 mph becoming east northeast 5 to 10 mph after midnight. Winds could gust as high as 29 mph.

    Low: 23 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 59. Southeast wind 6 to 11 mph.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. Southeast wind 10 to 15 mph, with gusts as high as 23 mph.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 73. Southwest wind 11 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42. North northwest wind 7 to 10 mph becoming southeast after midnight.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83. South southeast wind 10 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 21 mph.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50. West southwest wind around 10 mph becoming southeast in the evening.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 80. Southeast wind 11 to 18 mph, with gusts as high as 28 mph.

    High: 80 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Mostly cloudy, with a high near 49. Northwest wind around 21 mph, with gusts as high as 32 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 23. Northwest wind 15 to 20 mph becoming east northeast 5 to 10 mph after midnight. Winds could gust as high as 29 mph.
Sunday
Sunny, with a high near 59. Southeast wind 6 to 11 mph.
Sunday Night
Partly cloudy, with a low around 40. Southeast wind 10 to 15 mph, with gusts as high as 23 mph.
Monday
Sunny, with a high near 73. Southwest wind 11 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 42. North northwest wind 7 to 10 mph becoming southeast after midnight.
Tuesday
Sunny, with a high near 83. South southeast wind 10 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 21 mph.
Tuesday Night
Partly cloudy, with a low around 50. West southwest wind around 10 mph becoming southeast in the evening.
Wednesday
Partly sunny, with a high near 80. Southeast wind 11 to 18 mph, with gusts as high as 28 mph.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 38. Breezy, with a south wind 18 to 23 mph becoming north northwest after midnight. Winds could gust as high as 31 mph.
Thursday
Rain and snow showers likely. Mostly cloudy, with a high near 47. Breezy, with a north northwest wind 25 to 29 mph, with gusts as high as 41 mph. Chance of precipitation is 70%.
Thursday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 26. Blustery.
Friday
A slight chance of snow showers. Partly sunny, with a high near 41. Breezy.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Partly sunny, with a high near 43.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles NNE Lambert MT
 47.78°N 104.57°W (Elev. 2500 ft)
12:35 pm MDT Apr 18, 2026
3pm MDT Apr 18, 2026-6pm MDT Apr 25, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database