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

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Hazardous Weather Conditions

Current conditions at

Sidney-Richland (KSDY)

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

Overcast

19°F

-7°C

Humidity 91%
Wind Speed N 6 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 01 Jan 09:56 AM MST
Extended Forecast for

8 Miles SSW Sidney MT

Dense Fog Advisory January 1, 10:03am until January 2, 11:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory January 1, 10:03am until January 2, 11:00am

    NOW until 11:00am Fri

    Dense Fog Advisory

  • New Year's Day

    High: 24 °F

    Cloudy

  • Tonight

    Tonight: Patchy freezing fog before 10pm, then patchy freezing fog after 3am. Cloudy, with a low around 13. Light northeast wind.

    Low: 13 °F

    Patchy
    Freezing Fog

  • Friday

    Friday: Cloudy, with a high near 25. Northeast wind around 5 mph becoming light and variable in the morning.

    High: 25 °F

    Cloudy

  • Friday Night

    Friday Night: Patchy freezing fog between 11pm and 2am. Mostly cloudy, with a low around 12. Calm wind.

    Low: 12 °F

    Patchy
    Freezing Fog

  • Saturday

    Saturday: Partly sunny, with a high near 25. Calm wind becoming east around 6 mph in the afternoon.

    High: 25 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 17. Southeast wind around 7 mph.

    Low: 17 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 40. South southeast wind around 7 mph becoming southwest in the afternoon.

    High: 40 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 21. South southwest wind around 6 mph.

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

New Year's Day
Cloudy, with a high near 24. North northwest wind around 5 mph becoming calm in the afternoon.
Tonight
Patchy freezing fog before 10pm, then patchy freezing fog after 3am. Cloudy, with a low around 13. Light northeast wind.
Friday
Cloudy, with a high near 25. Northeast wind around 5 mph becoming light and variable in the morning.
Friday Night
Patchy freezing fog between 11pm and 2am. Mostly cloudy, with a low around 12. Calm wind.
Saturday
Partly sunny, with a high near 25. Calm wind becoming east around 6 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 17. Southeast wind around 7 mph.
Sunday
Mostly sunny, with a high near 40. South southeast wind around 7 mph becoming southwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 21. South southwest wind around 6 mph.
Monday
Mostly sunny, with a high near 42. Southwest wind around 7 mph.
Monday Night
Mostly cloudy, with a low around 19. West wind around 6 mph.
Tuesday
Mostly sunny, with a high near 36. West wind 6 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 19.
Wednesday
Mostly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
8 Miles SSW Sidney MT
 47.61°N 104.24°W (Elev. 1972 ft)
Last Update:
2:42 am MST Jan 1, 2026
Forecast Valid:
10am MST Jan 1, 2026-6pm MST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

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