Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Sidney-Richland (KSDY)

Lat: 47.7°NLon: 104.2°WElev: 1985.0ft.

Overcast

14°F

-10°C

Humidity 78%
Wind Speed WNW 6 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill5°F (-15°C)
Last update 07 Dec 03:20 PM MST
Extended Forecast for

Lambert MT

High Wind Watch December 8, 11:00pm until December 9, 05:00pm
Click here for hazard details and duration
High Wind Watch
  • Tonight

    Tonight: Mostly cloudy, with a temperature falling to near 7 by 8pm, then rising to around 29 during the remainder of the night. Wind chill values between zero and 5. Light and variable wind becoming west southwest 5 to 10 mph after midnight.

    Low: 7 °F

    Mostly Cloudy

  • Monday

    Monday: Patchy blowing snow before 10am. Partly sunny, with a high near 38. Breezy, with a west wind 16 to 22 mph, with gusts as high as 33 mph.

    High: 38 °F

    Breezy.
    Patchy
    Blowing Snow
    then Partly
    Sunny

  • Monday Night

    Monday Night: A chance of freezing rain between 11pm and midnight, then a chance of rain after midnight.  Mostly cloudy, with a temperature falling to near 28 by 8pm, then rising to around 36 during the remainder of the night. Southwest wind 13 to 18 mph, with gusts as high as 33 mph.  Chance of precipitation is 50%.

    Low: 28 °F

    Chance
    Freezing Rain
    then Chance
    Rain

  • Tuesday

    Tuesday: A 30 percent chance of rain before 11am.  Cloudy, then gradually becoming mostly sunny, with a high near 43. Windy, with a west northwest wind 23 to 33 mph, with gusts as high as 48 mph.

    High: 43 °F

    Windy. Chance
    Rain then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 7. Blustery, with a northwest wind 17 to 22 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 32 mph.

    Low: 7 °F

    Partly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of snow, mainly after 11am.  Mostly cloudy, with a high near 26. Light and variable wind becoming east southeast 6 to 11 mph in the morning. Winds could gust as high as 18 mph.  New snow accumulation of less than one inch possible.

    High: 26 °F

    Chance Snow

  • Wednesday Night

    Wednesday Night: Snow likely, mainly before 11pm.  Cloudy, with a low around 3. East southeast wind 10 to 13 mph becoming northwest after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 3 °F

    Snow Likely
    then Chance
    Snow

  • Thursday

    Thursday: A 20 percent chance of snow.  Mostly cloudy, with a high near 12. Northwest wind 14 to 16 mph, with gusts as high as 24 mph.

    High: 12 °F

    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -15. Northwest wind 9 to 13 mph, with gusts as high as 20 mph.

    Low: -15 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a temperature falling to near 7 by 8pm, then rising to around 29 during the remainder of the night. Wind chill values between zero and 5. Light and variable wind becoming west southwest 5 to 10 mph after midnight.
Monday
Patchy blowing snow before 10am. Partly sunny, with a high near 38. Breezy, with a west wind 16 to 22 mph, with gusts as high as 33 mph.
Monday Night
A chance of freezing rain between 11pm and midnight, then a chance of rain after midnight. Mostly cloudy, with a temperature falling to near 28 by 8pm, then rising to around 36 during the remainder of the night. Southwest wind 13 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 50%.
Tuesday
A 30 percent chance of rain before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 43. Windy, with a west northwest wind 23 to 33 mph, with gusts as high as 48 mph.
Tuesday Night
Partly cloudy, with a low around 7. Blustery, with a northwest wind 17 to 22 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 32 mph.
Wednesday
A 50 percent chance of snow, mainly after 11am. Mostly cloudy, with a high near 26. Light and variable wind becoming east southeast 6 to 11 mph in the morning. Winds could gust as high as 18 mph. New snow accumulation of less than one inch possible.
Wednesday Night
Snow likely, mainly before 11pm. Cloudy, with a low around 3. East southeast wind 10 to 13 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Thursday
A 20 percent chance of snow. Mostly cloudy, with a high near 12. Northwest wind 14 to 16 mph, with gusts as high as 24 mph.
Thursday Night
Mostly cloudy, with a low around -15. Northwest wind 9 to 13 mph, with gusts as high as 20 mph.
Friday
A 20 percent chance of snow after 11am. Mostly cloudy and cold, with a high near -2. Northwest wind 7 to 9 mph.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around -13. East southeast wind around 6 mph.
Saturday
A chance of snow. Mostly cloudy, with a high near 10.
Saturday Night
A slight chance of snow. Mostly cloudy, with a low around -5.
Sunday
A slight chance of snow. Partly sunny, with a high near 24.
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ABOUT THIS FORECAST

 
Point Forecast:
Lambert MT
 47.69°N 104.62°W (Elev. 2451 ft)
2:49 pm MST Dec 7, 2025
3pm MST Dec 7, 2025-6pm MST Dec 14, 2025
 
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Additional Resources

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