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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Sidney-Richland (KSDY)

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

Rain

57°F

14°C

Humidity 100%
Wind Speed NE 6 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 20 Sep 02:20 AM MDT
Extended Forecast for

2 Miles WSW Sidney MT

  • Overnight

    Overnight: Showers. Low around 50. East wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    Low: 50 °F

    Showers

  • Sunday

    Sunday: Showers, mainly before 11am. High near 62. East wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    High: 62 °F

    Showers then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 46. East wind 5 to 9 mph becoming light after midnight.

    Low: 46 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 72. Light east southeast wind becoming south southeast 8 to 13 mph in the morning. Winds could gust as high as 22 mph.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48. Southeast wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75. South southeast wind 10 to 18 mph, with gusts as high as 30 mph.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 51. South southeast wind 8 to 17 mph, with gusts as high as 29 mph.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. South southeast wind around 9 mph.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. East southeast wind around 5 mph becoming light and variable after midnight.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers. Low around 50. East wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Sunday
Showers, mainly before 11am. High near 62. East wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Sunday Night
Mostly cloudy, with a low around 46. East wind 5 to 9 mph becoming light after midnight.
Monday
Mostly sunny, with a high near 72. Light east southeast wind becoming south southeast 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Monday Night
Mostly clear, with a low around 48. Southeast wind 9 to 11 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 75. South southeast wind 10 to 18 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 51. South southeast wind 8 to 17 mph, with gusts as high as 29 mph.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. South southeast wind around 9 mph.
Wednesday Night
Partly cloudy, with a low around 51. East southeast wind around 5 mph becoming light and variable after midnight.
Thursday
Mostly sunny, with a high near 83. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 53. North northeast wind around 5 mph becoming south southeast after midnight.
Friday
Sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 56.
Saturday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Sidney MT
 47.69°N 104.19°W (Elev. 1985 ft)
Last Update:
1:20 am MDT Sep 20, 2026
Forecast Valid:
2am MDT Sep 20, 2026-6pm MDT Sep 26, 2026
 
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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