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

Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Hazardous Weather Conditions

Current conditions at

FORT PECK DAM (GGWFP)

Lat: 48.0084°NLon: 106.3962°WElev: 2280.0ft.

NA

64°F

18°C

Humidity 64%
Wind Speed WSW 19 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 08 Aug 05:52 PM MDT
Extended Forecast for

Fort Peck MT

Lake Wind Advisory August 8, 06:27pm until August 9, 09:00pm
Click here for hazard details and duration
Lake Wind Advisory
  •  
    Lake Wind Advisory August 8, 06:27pm until August 9, 09:00pm

    NOW until 9:00pm Sat

    Lake Wind Advisory

  • Tonight

    Low: 57 °F

    Showers
    Likely and
    Breezy

  • Saturday

    Saturday: A chance of showers before noon, then a chance of showers and thunderstorms between noon and 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 68. Breezy, with a west wind around 24 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.

    High: 68 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 57. West wind 10 to 18 mph, with gusts as high as 30 mph.

    Low: 57 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 76. West wind around 10 mph, with gusts as high as 21 mph.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61. West northwest wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77. West northwest wind 7 to 9 mph, with gusts as high as 18 mph.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60. Northwest wind 6 to 10 mph becoming east southeast after midnight.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81. East southeast wind around 7 mph becoming west northwest in the afternoon.

    High: 81 °F

    Sunny

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly before 2am, then showers likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 57. Breezy, with a west wind 18 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 70%.
Saturday
A chance of showers before noon, then a chance of showers and thunderstorms between noon and 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 68. Breezy, with a west wind around 24 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.
Saturday Night
Partly cloudy, with a low around 57. West wind 10 to 18 mph, with gusts as high as 30 mph.
Sunday
Sunny, with a high near 76. West wind around 10 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 61. West northwest wind 6 to 10 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 77. West northwest wind 7 to 9 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 60. Northwest wind 6 to 10 mph becoming east southeast after midnight.
Tuesday
Sunny, with a high near 81. East southeast wind around 7 mph becoming west northwest in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 62. North wind around 10 mph becoming east southeast after midnight.
Wednesday
Sunny, with a high near 81. East wind 6 to 8 mph becoming south southwest in the afternoon.
Wednesday Night
Mostly clear, with a low around 61. East wind around 9 mph.
Thursday
Sunny, with a high near 81.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fort Peck MT
 48.02°N 106.44°W (Elev. 2037 ft)
Last Update:
1:48 pm MDT Aug 8, 2025
Forecast Valid:
6pm MDT Aug 8, 2025-6pm MDT Aug 15, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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