Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

Sidney-Richland (KSDY)

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

Mist

27°F

-3°C

Humidity 92%
Wind Speed NNE 3 MPH
Barometer 29.7 in (1005.76 mb)
Dewpoint 25°F (-4°C)
Visibility 5.00 mi
Last update 25 Dec 10:35 AM MST
Extended Forecast for

8 Miles SSW Sidney MT

  • Christmas Day

    Christmas Day: Partly sunny, with a high near 37. South southwest wind 7 to 9 mph becoming west northwest in the afternoon.

    High: 37 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. Light south southwest wind.

    Low: 20 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 42. South wind 3 to 7 mph.

    High: 42 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 20. Southwest wind around 6 mph.

    Low: 20 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow after 11am.  Partly sunny, with a high near 32. Northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph.  Little or no snow accumulation expected.

    High: 32 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before 11pm.  Mostly cloudy, with a low around -5. West northwest wind around 18 mph, with gusts as high as 28 mph.

    Low: -5 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 6. Northwest wind 11 to 16 mph, with gusts as high as 24 mph.

    High: 6 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -5. Northwest wind around 6 mph becoming calm  in the evening.

    Low: -5 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 28. Light south southwest wind becoming west southwest 5 to 9 mph in the morning.

    High: 28 °F

    Mostly Sunny

Detailed Forecast

Christmas Day
Partly sunny, with a high near 37. South southwest wind 7 to 9 mph becoming west northwest in the afternoon.
Tonight
Mostly cloudy, with a low around 20. Light south southwest wind.
Friday
Mostly sunny, with a high near 42. South wind 3 to 7 mph.
Friday Night
Mostly cloudy, with a low around 20. Southwest wind around 6 mph.
Saturday
A 30 percent chance of snow after 11am. Partly sunny, with a high near 32. Northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph. Little or no snow accumulation expected.
Saturday Night
A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around -5. West northwest wind around 18 mph, with gusts as high as 28 mph.
Sunday
Mostly sunny, with a high near 6. Northwest wind 11 to 16 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around -5. Northwest wind around 6 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 28. Light south southwest wind becoming west southwest 5 to 9 mph in the morning.
Monday Night
Mostly cloudy, with a low around 17. West wind around 9 mph.
Tuesday
A 20 percent chance of snow. Partly sunny, with a high near 36. West wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 10.
Wednesday
Mostly cloudy, with a high near 24.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles SSW Sidney MT
 47.61°N 104.24°W (Elev. 1972 ft)
2:34 am MST Dec 25, 2025
10am MST Dec 25, 2025-6pm MST Dec 31, 2025
 
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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