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

Sidney-Richland (KSDY)

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

Rain

9°C

48°F

Humidity 87%
Wind Speed ESE 5 MPH
Barometer 29.73 in (1006.77 mb)
Dewpoint 7°C (45°F)
Visibility 16 km
Wind Chill8°C (46°F)
Last update 13 Apr 09:20 PM MDT
Extended Forecast for

Sidney MT

  • Tonight

    Tonight: A 50 percent chance of showers, mainly before midnight. Cloudy, with a low around 3. South southeast wind 5 to 10 km/h becoming calm.

    Low: 3 °C

    Chance
    Showers then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: Cloudy through mid morning, then gradual clearing, with a high near 19. Southwest wind 5 to 10 km/h increasing to 13 to 18 km/h in the afternoon. Winds could gust as high as 35 km/h.

    High: 19 °C

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 4. West wind 10 to 13 km/h becoming south southwest after midnight.

    Low: 4 °C

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 20. Southwest wind 10 to 14 km/h.

    High: 20 °C

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 5. West southwest wind 10 to 13 km/h becoming east northeast after midnight.

    Low: 5 °C

    Chance
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers, mainly after noon. Partly sunny, with a high near 15. Northeast wind 13 to 18 km/h becoming northwest 24 to 29 km/h in the afternoon. Winds could gust as high as 47 km/h.

    High: 15 °C

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of rain showers before 9pm, then a chance of rain and snow showers between 9pm and midnight, then a chance of snow showers after midnight. Mostly cloudy, with a low around -5. Northwest wind 24 to 34 km/h, with gusts as high as 48 km/h. Chance of precipitation is 40%. New snow accumulation of around a centimeter possible.

    Low: -5 °C

    Chance
    Rain/Snow
    then Chance
    Snow Showers

  • Friday

    Friday: A 20 percent chance of snow showers. Mostly cloudy, with a high near 3. Breezy, with a northwest wind 24 to 29 km/h increasing to 30 to 35 km/h in the afternoon. Winds could gust as high as 50 km/h.

    High: 3 °C

    Slight Chance
    Snow Showers
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around -8. North northwest wind 27 to 32 km/h decreasing to 16 to 21 km/h after midnight. Winds could gust as high as 45 km/h.

    Low: -8 °C

    Partly Cloudy

Detailed Forecast

Tonight
A 50 percent chance of showers, mainly before midnight. Cloudy, with a low around 3. South southeast wind 5 to 10 km/h becoming calm.
Tuesday
Cloudy through mid morning, then gradual clearing, with a high near 19. Southwest wind 5 to 10 km/h increasing to 13 to 18 km/h in the afternoon. Winds could gust as high as 35 km/h.
Tuesday Night
Mostly clear, with a low around 4. West wind 10 to 13 km/h becoming south southwest after midnight.
Wednesday
Partly sunny, with a high near 20. Southwest wind 10 to 14 km/h.
Wednesday Night
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 5. West southwest wind 10 to 13 km/h becoming east northeast after midnight.
Thursday
A 40 percent chance of showers, mainly after noon. Partly sunny, with a high near 15. Northeast wind 13 to 18 km/h becoming northwest 24 to 29 km/h in the afternoon. Winds could gust as high as 47 km/h.
Thursday Night
A chance of rain showers before 9pm, then a chance of rain and snow showers between 9pm and midnight, then a chance of snow showers after midnight. Mostly cloudy, with a low around -5. Northwest wind 24 to 34 km/h, with gusts as high as 48 km/h. Chance of precipitation is 40%. New snow accumulation of around a centimeter possible.
Friday
A 20 percent chance of snow showers. Mostly cloudy, with a high near 3. Breezy, with a northwest wind 24 to 29 km/h increasing to 30 to 35 km/h in the afternoon. Winds could gust as high as 50 km/h.
Friday Night
Partly cloudy, with a low around -8. North northwest wind 27 to 32 km/h decreasing to 16 to 21 km/h after midnight. Winds could gust as high as 45 km/h.
Saturday
Mostly sunny, with a high near 10. Northwest wind 16 to 21 km/h increasing to 22 to 27 km/h in the afternoon. Winds could gust as high as 39 km/h.
Saturday Night
Mostly clear, with a low around -4. North northwest wind 18 to 23 km/h becoming south 10 to 15 km/h in the evening. Winds could gust as high as 34 km/h.
Sunday
Mostly sunny, with a high near 17.
Sunday Night
Partly cloudy, with a low around 2.
Monday
Mostly sunny, with a high near 21.
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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 m)
Last Update:
6:06 pm MDT Apr 13, 2026
Forecast Valid:
9pm MDT Apr 13, 2026-6pm MDT Apr 20, 2026
 
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