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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Sidney-Richland (KSDY)

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

Clear

43°F

6°C

Humidity 70%
Wind Speed N 0 MPH
Barometer 30.34 in (1027.43 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 04 Oct 08:35 AM MDT
Extended Forecast for

Sidney MT

  • Today

    Today: Sunny, with a high near 71. Calm wind becoming east southeast 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 44. South southeast wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 44 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 82. South wind 8 to 13 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46. West wind 3 to 8 mph.

    Low: 46 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74. Light west northwest wind becoming northwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 41. Light and variable wind.

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. Calm wind becoming north around 6 mph in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42. Light north northeast wind.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 67. Calm wind becoming east around 6 mph in the afternoon.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 71. Calm wind becoming east southeast 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Tonight
Partly cloudy, with a low around 44. South southeast wind 8 to 10 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 82. South wind 8 to 13 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Monday Night
Mostly clear, with a low around 46. West wind 3 to 8 mph.
Tuesday
Sunny, with a high near 74. Light west northwest wind becoming northwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 41. Light and variable wind.
Wednesday
Mostly sunny, with a high near 72. Calm wind becoming north around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 42. Light north northeast wind.
Thursday
Mostly sunny, with a high near 67. Calm wind becoming east around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 41. East northeast wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 72. Southeast wind 5 to 14 mph, with gusts as high as 24 mph.
Friday Night
Mostly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 67.
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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:
3:30 am MDT Oct 4, 2026
Forecast Valid:
8am MDT Oct 4, 2026-6pm MDT Oct 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation