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

Areas of Heavy Rainfall and Heat Early This Week

Excessive rainfall may produce locally considerable flash flooding over parts of South Texas, the western Gulf Coast, and lower Mississippi River Valley today into Thursday. Rainfall totals of 5 to 10 inches are expected. Hot temperatures may cause heat illnesses over central and northern California and the Pacific Northwest through Tuesday. Read More >

Current conditions at

Sidney-Richland (KSDY)

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

Mostly Cloudy

72°F

22°C

Humidity 40%
Wind Speed N 21 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 15 Jun 11:35 AM MDT
Extended Forecast for

Sidney MT

  • Today

    Today: Mostly sunny, with a high near 75. North northwest wind 18 to 21 mph, with gusts as high as 34 mph.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 47. North northwest wind 11 to 16 mph becoming light and variable. Winds could gust as high as 26 mph.

    Low: 47 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms between 4pm and 5pm. Mostly cloudy, with a high near 80. South southwest wind 6 to 11 mph becoming southeast in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 20%.

    High: 80 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3am, then a chance of showers after 3am. Low around 50. East southeast wind 7 to 16 mph becoming west northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%.

    Low: 50 °F

    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, then showers and possibly a thunderstorm after noon. High near 67. Breezy, with a northwest wind 22 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 80%.

    High: 67 °F

    Breezy.
    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 45. Northwest wind 13 to 18 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 29 mph.

    Low: 45 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 69. West northwest wind 7 to 15 mph, with gusts as high as 25 mph.

    High: 69 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44. Northwest wind 6 to 11 mph becoming light west in the evening. Winds could gust as high as 21 mph.

    Low: 44 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 74. Calm wind becoming northwest 5 to 8 mph in the afternoon.

    High: 74 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 75. North northwest wind 18 to 21 mph, with gusts as high as 34 mph.
Tonight
Partly cloudy, with a low around 47. North northwest wind 11 to 16 mph becoming light and variable. Winds could gust as high as 26 mph.
Tuesday
A slight chance of showers and thunderstorms between 4pm and 5pm. Mostly cloudy, with a high near 80. South southwest wind 6 to 11 mph becoming southeast in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 20%.
Tuesday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3am, then a chance of showers after 3am. Low around 50. East southeast wind 7 to 16 mph becoming west northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%.
Wednesday
A chance of showers, then showers and possibly a thunderstorm after noon. High near 67. Breezy, with a northwest wind 22 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 80%.
Wednesday Night
A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 45. Northwest wind 13 to 18 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 29 mph.
Thursday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 69. West northwest wind 7 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 44. Northwest wind 6 to 11 mph becoming light west in the evening. Winds could gust as high as 21 mph.
Juneteenth
Sunny, with a high near 74. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 47. North northwest wind 5 to 9 mph becoming calm after midnight.
Saturday
Mostly sunny, with a high near 76. Light east wind becoming east northeast 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Saturday Night
A chance of showers. Partly cloudy, with a low around 49.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sidney MT
 47.71°N 104.19°W (Elev. 1998 ft)
Last Update:
8:36 am MDT Jun 15, 2026
Forecast Valid:
11am MDT Jun 15, 2026-6pm MDT Jun 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation