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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Sidney-Richland (KSDY)

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

Overcast

38°F

3°C

Humidity 67%
Wind Speed N 0 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 22 Mar 12:56 PM MDT
Extended Forecast for

Sidney MT

  • This Afternoon

    This Afternoon: A 20 percent chance of rain before 5pm. Mostly cloudy early, then gradual clearing, with a high near 46. Southwest wind 9 to 11 mph becoming north. Winds could gust as high as 18 mph.

    High: 46 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: Clear, with a low around 28. North wind 5 to 10 mph becoming light and variable.

    Low: 28 °F

    Clear

  • Monday

    Monday: Increasing clouds, with a high near 54. South wind 5 to 10 mph becoming north in the afternoon.

    High: 54 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Increasing clouds, with a low around 29. East northeast wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 29 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 56. East southeast wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 56 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of rain before midnight, then a chance of rain and snow between midnight and 3am, then a chance of snow after 3am. Mostly cloudy, with a low around 35. North northeast wind 8 to 11 mph becoming east after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 35 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: A 20 percent chance of rain after noon. Mostly cloudy, with a high near 64. East southeast wind 8 to 15 mph becoming west in the afternoon. Winds could gust as high as 26 mph.

    High: 64 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 20. West wind 11 to 14 mph, with gusts as high as 22 mph.

    Low: 20 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 35. North wind around 11 mph, with gusts as high as 20 mph.

    High: 35 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of rain before 5pm. Mostly cloudy early, then gradual clearing, with a high near 46. Southwest wind 9 to 11 mph becoming north. Winds could gust as high as 18 mph.
Tonight
Clear, with a low around 28. North wind 5 to 10 mph becoming light and variable.
Monday
Increasing clouds, with a high near 54. South wind 5 to 10 mph becoming north in the afternoon.
Monday Night
Increasing clouds, with a low around 29. East northeast wind 8 to 11 mph, with gusts as high as 18 mph.
Tuesday
Mostly cloudy, with a high near 56. East southeast wind 10 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
A chance of rain before midnight, then a chance of rain and snow between midnight and 3am, then a chance of snow after 3am. Mostly cloudy, with a low around 35. North northeast wind 8 to 11 mph becoming east after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Wednesday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 64. East southeast wind 8 to 15 mph becoming west in the afternoon. Winds could gust as high as 26 mph.
Wednesday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 20. West wind 11 to 14 mph, with gusts as high as 22 mph.
Thursday
Partly sunny, with a high near 35. North wind around 11 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 18. North wind 5 to 9 mph becoming south after midnight.
Friday
Sunny, with a high near 48. West southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Friday Night
Mostly clear, with a low around 24.
Saturday
Sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sidney MT
 47.72°N 104.16°W (Elev. 1962 ft)
Last Update:
12:45 pm MDT Mar 22, 2026
Forecast Valid:
1pm MDT Mar 22, 2026-6pm MDT Mar 28, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation