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

Storm Moving from Western into Central U.S. through Wednesday

A storm system moving over the Rockies Wednesday will bring marginal risks for excessive rainfall and severe thunderstorms from parts of New Mexico into western South Dakota. Moderate snow is expected from northwestern Wyoming into southern Montana. Read More >

Current conditions at

Sidney-Richland (KSDY)

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

Overcast

46°F

8°C

Humidity 87%
Wind Speed ESE 5 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 15 Oct 04:05 AM MDT
Extended Forecast for

Sidney MT

  • Today

    Today: Rain likely, mainly after 5pm. Cloudy, with a high near 57. Light east wind becoming east southeast 6 to 11 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 70%.

    High: 57 °F

    Slight Chance
    Rain then
    Rain Likely

  • Tonight

    Tonight: Rain and possibly a thunderstorm. Low around 44. Northeast wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%.

    Low: 44 °F

    Rain

  • Thursday

    Thursday: Rain. High near 53. North northeast wind 6 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

    High: 53 °F

    Rain

  • Thursday Night

    Thursday Night: Rain. Low around 40. West wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    Low: 40 °F

    Rain

  • Friday

    Friday: A 40 percent chance of rain, mainly before noon. Mostly sunny, with a high near 58. West northwest wind 13 to 20 mph, with gusts as high as 33 mph.

    High: 58 °F

    Chance Rain

  • Friday Night

    Friday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 34. West wind 11 to 16 mph, with gusts as high as 28 mph.

    Low: 34 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Saturday

    Saturday: Sunny, with a high near 55. West northwest wind 14 to 18 mph, with gusts as high as 31 mph.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32. West northwest wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 18 mph.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 64. South southwest wind 7 to 13 mph, with gusts as high as 22 mph.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

Today
Rain likely, mainly after 5pm. Cloudy, with a high near 57. Light east wind becoming east southeast 6 to 11 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 70%.
Tonight
Rain and possibly a thunderstorm. Low around 44. Northeast wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%.
Thursday
Rain. High near 53. North northeast wind 6 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Thursday Night
Rain. Low around 40. West wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Friday
A 40 percent chance of rain, mainly before noon. Mostly sunny, with a high near 58. West northwest wind 13 to 20 mph, with gusts as high as 33 mph.
Friday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 34. West wind 11 to 16 mph, with gusts as high as 28 mph.
Saturday
Sunny, with a high near 55. West northwest wind 14 to 18 mph, with gusts as high as 31 mph.
Saturday Night
Mostly clear, with a low around 32. West northwest wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 18 mph.
Sunday
Mostly sunny, with a high near 64. South southwest wind 7 to 13 mph, with gusts as high as 22 mph.
Sunday Night
Partly cloudy, with a low around 37. South southwest wind 8 to 10 mph, with gusts as high as 18 mph.
Monday
A 20 percent chance of rain. Mostly sunny, with a high near 57. West wind 10 to 16 mph, with gusts as high as 28 mph.
Monday Night
Mostly cloudy, with a low around 32.
Tuesday
Mostly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sidney MT
 47.72°N 104.16°W (Elev. 1962 ft)
Last Update:
2:47 am MDT Oct 15, 2025
Forecast Valid:
4am MDT Oct 15, 2025-6pm MDT Oct 21, 2025
 
Forecast Discussion
 
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Additional Resources

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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