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

Rapid Warm-Up Forecast Across Much of the Lower 48 Today and Tuesday

Most of the U.S. starts the week calm and unseasonably warm. The Heartland will be warmest, with highs 25–30° above average. Only the Gulf Coast stays chilly. Rain today is limited to western Washington while lake effect snow continues east of Lake Ontario. Cooler air returns after Tuesday, bringing a wintry mix to the Midwest and Northeast by Wednesday. Read More >

Current conditions at

Sidney-Richland (KSDY)

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

Clear

25°F

-4°C

Humidity 92%
Wind Speed SSW 6 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 10 Jan 09:30 PM MST
Extended Forecast for

Sidney MT

  • Today

    Today: Increasing clouds, with a high near 51. Breezy, with a west wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 51 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. Breezy, with a west northwest wind 17 to 22 mph, with gusts as high as 33 mph.

    Low: 36 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 47. West northwest wind 18 to 21 mph, with gusts as high as 32 mph.

    High: 47 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 27. Northwest wind 6 to 15 mph, with gusts as high as 24 mph.

    Low: 27 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 42. Light and variable wind becoming south southwest around 6 mph in the afternoon.

    High: 42 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 30. South wind 6 to 15 mph becoming west northwest after midnight. Winds could gust as high as 24 mph.

    Low: 30 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 41. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 45 mph.

    High: 41 °F

    Mostly Sunny
    and Windy

  • Thursday Night

    Thursday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 18. Blustery, with a northwest wind around 25 mph, with gusts as high as 38 mph.

    Low: 18 °F

    Slight Chance
    Snow and
    Blustery

  • Friday

    Friday: Partly sunny, with a high near 27. Blustery, with a northwest wind 20 to 23 mph, with gusts as high as 33 mph.

    High: 27 °F

    Partly Sunny
    and Blustery

Detailed Forecast

Today
Increasing clouds, with a high near 51. Breezy, with a west wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph.
Tonight
Mostly cloudy, with a low around 36. Breezy, with a west northwest wind 17 to 22 mph, with gusts as high as 33 mph.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 47. West northwest wind 18 to 21 mph, with gusts as high as 32 mph.
Tuesday Night
Mostly cloudy, with a low around 27. Northwest wind 6 to 15 mph, with gusts as high as 24 mph.
Wednesday
Partly sunny, with a high near 42. Light and variable wind becoming south southwest around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 30. South wind 6 to 15 mph becoming west northwest after midnight. Winds could gust as high as 24 mph.
Thursday
Mostly sunny, with a high near 41. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 45 mph.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 18. Blustery, with a northwest wind around 25 mph, with gusts as high as 38 mph.
Friday
Partly sunny, with a high near 27. Blustery, with a northwest wind 20 to 23 mph, with gusts as high as 33 mph.
Friday Night
Mostly cloudy, with a low around 12. North northwest wind 11 to 14 mph, with gusts as high as 23 mph.
Saturday
Mostly sunny, with a high near 32. West northwest wind 10 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 17.
Sunday
Mostly sunny, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sidney MT
 47.71°N 104.19°W (Elev. 1998 ft)
Last Update:
2:30 am MST Jan 12, 2026
Forecast Valid:
8am MST Jan 12, 2026-6pm MST Jan 18, 2026
 
Forecast Discussion
 
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