National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Prolonged Extreme Cold; Eastern U.S. Winter Storm

Another Arctic blast will surge south across the northern Plains tonight, crossing the Midwest and reaching the Gulf Coast Friday night. Dangerously cold temperatures will persist across the eastern U.S. into early February. There is increasing confidence for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >

Current conditions at

Sidney-Richland (KSDY)

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

light snow

21°F

-6°C

Humidity 79%
Wind Speed ENE 4 MPH
Barometer 30.3 in (1026.08 mb)
Dewpoint 16°F (-9°C)
Visibility 3.00 mi
Wind Chill15°F (-9°C)
Last update 29 Jan 05:20 PM MST
Extended Forecast for

Sidney MT

  • This Afternoon

    This Afternoon: A 40 percent chance of snow. Cloudy, with a high near 24. Northeast wind around 5 mph. Total daytime snow accumulation of less than a half inch possible.

    High: 24 °F

    Chance Snow

  • Tonight

    Tonight: Snow likely, mainly before 9pm. Cloudy, with a low around 5. Wind chill values between -5 and zero. East northeast wind 5 to 7 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 5 °F

    Snow Likely
    then Chance
    Snow

  • Friday

    Friday: Cloudy through mid morning, then gradual clearing, with a high near 24. Wind chill values between -5 and 5. South southeast wind 8 to 14 mph, with gusts as high as 21 mph.

    High: 24 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: A chance of snow between 11pm and 2am, then a chance of freezing rain after 2am. Increasing clouds, with a low around 16. South wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 16 °F

    Chance Snow
    then Chance
    Wintry Mix

  • Saturday

    Saturday: A chance of freezing rain before 8am, then a chance of rain between 8am and 11am. Mostly cloudy, with a high near 43. South southwest wind 11 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 50%.

    High: 43 °F

    Chance
    Rain/Freezing
    Rain then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25. West northwest wind 10 to 16 mph, with gusts as high as 25 mph.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 35. Northwest wind 5 to 7 mph.

    High: 35 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 21. Southeast wind 3 to 7 mph.

    Low: 21 °F

    Mostly Cloudy

  • Monday

    Monday: A 10 percent chance of rain after 5pm. Mostly cloudy, with a high near 41. South southeast wind 8 to 13 mph becoming west in the afternoon. Winds could gust as high as 18 mph.

    High: 41 °F

    Mostly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

This Afternoon
A 40 percent chance of snow. Cloudy, with a high near 24. Northeast wind around 5 mph. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow likely, mainly before 9pm. Cloudy, with a low around 5. Wind chill values between -5 and zero. East northeast wind 5 to 7 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday
Cloudy through mid morning, then gradual clearing, with a high near 24. Wind chill values between -5 and 5. South southeast wind 8 to 14 mph, with gusts as high as 21 mph.
Friday Night
A chance of snow between 11pm and 2am, then a chance of freezing rain after 2am. Increasing clouds, with a low around 16. South wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Saturday
A chance of freezing rain before 8am, then a chance of rain between 8am and 11am. Mostly cloudy, with a high near 43. South southwest wind 11 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 50%.
Saturday Night
Mostly cloudy, with a low around 25. West northwest wind 10 to 16 mph, with gusts as high as 25 mph.
Sunday
Mostly cloudy, with a high near 35. Northwest wind 5 to 7 mph.
Sunday Night
Mostly cloudy, with a low around 21. Southeast wind 3 to 7 mph.
Monday
A 10 percent chance of rain after 5pm. Mostly cloudy, with a high near 41. South southeast wind 8 to 13 mph becoming west in the afternoon. Winds could gust as high as 18 mph.
Monday Night
A slight chance of rain or freezing rain before 11pm, then a slight chance of snow between 11pm and 2am, then a slight chance of freezing rain after 2am. Mostly cloudy, with a low around 21. West northwest wind around 10 mph. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 36. West northwest wind 9 to 11 mph.
Tuesday Night
Partly cloudy, with a low around 19.
Wednesday
Partly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Mostly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sidney MT
 47.71°N 104.19°W (Elev. 1998 ft)
Last Update:
1:52 pm MST Jan 29, 2026
Forecast Valid:
5pm MST Jan 29, 2026-6pm MST Feb 5, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation