Heavy Rainfall and Severe Thunderstorm Threats for the Plains and Southeast

A frontal boundary extending from the western High Plains to the Southeast will focus additional showers and thunderstorms this weekend. Some of these storms may become severe, alongside frequent lightning, and isolated instances of flash flooding. Meanwhile dry conditions will continue for the Great Basin where fire weather concerns linger. For the mid-Atlantic and Northeast, seasonable weather. Read More >

Hazardous Weather Conditions

Current conditions at

Sidney-Richland (KSDY)

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

Clear

86°F

30°C

Humidity 48%
Wind Speed ESE 9 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 02 Aug 05:56 PM MDT
Extended Forecast for

Sidney MT

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am, then a slight chance of showers and thunderstorms after 3am.  Partly cloudy, with a low around 61. East wind 5 to 8 mph becoming calm  after midnight.  Chance of precipitation is 40%.

    Low: 61 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly after 5pm.  Increasing clouds, with a high near 84. Calm wind becoming south southwest around 6 mph in the morning.

    High: 84 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 60. North wind around 6 mph becoming calm  in the evening.

    Low: 60 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 88. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms after midnight.  Partly cloudy, with a low around 63. East southeast wind 7 to 9 mph.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon.  Partly sunny, with a high near 82. East wind 7 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 18 mph.  Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before midnight.  Partly cloudy, with a low around 58. West southwest wind 5 to 10 mph.

    Low: 58 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Sunny, with a high near 88. West southwest wind 6 to 8 mph.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly after midnight.  Partly cloudy, with a low around 60. North wind 5 to 8 mph becoming light and variable  after midnight.

    Low: 60 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am, then a slight chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 61. East wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 40%.
Sunday
A 40 percent chance of showers and thunderstorms, mainly after 5pm. Increasing clouds, with a high near 84. Calm wind becoming south southwest around 6 mph in the morning.
Sunday Night
A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 60. North wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 88. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Monday Night
A 30 percent chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 63. East southeast wind 7 to 9 mph.
Tuesday
A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 82. East wind 7 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 58. West southwest wind 5 to 10 mph.
Wednesday
Sunny, with a high near 88. West southwest wind 6 to 8 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly after midnight. Partly cloudy, with a low around 60. North wind 5 to 8 mph becoming light and variable after midnight.
Thursday
A slight chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 86. East wind 5 to 8 mph becoming northwest in the afternoon. Chance of precipitation is 20%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. West wind 5 to 8 mph.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 77.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Saturday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 75.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Sidney MT
 47.71°N 104.19°W (Elev. 1998 ft)
2:18 pm MDT Aug 2, 2025
6pm MDT Aug 2, 2025-6pm MDT Aug 9, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database