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

Heat Builds in the West; Severe Thunderstorms and Heavy Rain in the Upper Midwest and Mid-Mississippi Valley; Extremely Critical Fire Weather in the Northwest on Saturday

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms and heavy rainfall are expected over parts of the Upper Midwest to mid-Mississippi Valley today. Critical to extremely critical fire weather conditions from the Northwest and the northern Great Basin on Saturday and Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Sidney-Richland (KSDY)

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

Clear

69°F

21°C

Humidity 78%
Wind Speed ESE 3 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 31 Jul 08:56 AM MDT
Extended Forecast for

Sidney MT

Fire Weather Watch August 1, 02:00pm until August 2, 09:00pm
Extreme Heat Watch August 1, 12:00pm until August 2, 06:00pm
Click here for hazard details and duration
Fire Weather Watch
Extreme Heat Watch

  • Today

    Today: Sunny, with a high near 95. South southeast wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 95 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 63. South wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Southwest wind around 6 mph becoming east northeast in the afternoon.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 69. East southeast wind 7 to 14 mph, with gusts as high as 25 mph.

    Low: 69 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 94. Southwest wind 11 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph.

    High: 94 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 59. North wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 59 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 78. North wind 16 to 20 mph, with gusts as high as 31 mph.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49. North northwest wind 13 to 18 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 29 mph.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77. Light west northwest wind increasing to 5 to 9 mph in the morning.

    High: 77 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 95. South southeast wind 8 to 13 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 63. South wind 6 to 11 mph, with gusts as high as 20 mph.
Saturday
Sunny and hot, with a high near 100. Southwest wind around 6 mph becoming east northeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 69. East southeast wind 7 to 14 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 94. Southwest wind 11 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph.
Sunday Night
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 59. North wind 7 to 10 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 78. North wind 16 to 20 mph, with gusts as high as 31 mph.
Monday Night
Mostly clear, with a low around 49. North northwest wind 13 to 18 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 29 mph.
Tuesday
Sunny, with a high near 77. Light west northwest wind increasing to 5 to 9 mph in the morning.
Tuesday Night
Mostly clear, with a low around 50. Northwest wind 5 to 7 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 87. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Mostly sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sidney MT
 47.71°N 104.19°W (Elev. 1998 ft)
Last Update:
5:45 am MDT Jul 31, 2026
Forecast Valid:
9am MDT Jul 31, 2026-6pm MDT Aug 6, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation