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 >

Current conditions at

HARLEM (HRLM)

Lat: 48.54333°NLon: 108.83472°WElev: 2358.0ft.

NA

48°F

9°C

Humidity 100%
Wind Speed N 0 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 10 Aug 05:00 AM MDT
Extended Forecast for

Chinook MT

  • Today

    Today: Widespread haze before 7am. Sunny, with a high near 82. Light and variable wind becoming west northwest 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 82 °F

    Haze then
    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 56. Northwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 18 mph.

    Low: 56 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: Sunny, with a high near 78. Northwest wind 5 to 11 mph, with gusts as high as 21 mph.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 84. East southeast wind 3 to 8 mph.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59. Southeast wind 7 to 10 mph.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. Southeast wind 6 to 9 mph becoming west in the afternoon.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. West northwest wind 7 to 9 mph.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

Today
Widespread haze before 7am. Sunny, with a high near 82. Light and variable wind becoming west northwest 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.
Tonight
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 56. Northwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 18 mph.
Monday
Sunny, with a high near 78. Northwest wind 5 to 11 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 56. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Tuesday
Sunny, with a high near 84. East southeast wind 3 to 8 mph.
Tuesday Night
Mostly clear, with a low around 59. Southeast wind 7 to 10 mph.
Wednesday
Sunny, with a high near 90. Southeast wind 6 to 9 mph becoming west in the afternoon.
Wednesday Night
Mostly clear, with a low around 56. West northwest wind 7 to 9 mph.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
A slight chance of showers after midnight. Partly cloudy, with a low around 51.
Friday
Mostly sunny, with a high near 77.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chinook MT
 48.6°N 109.23°W (Elev. 2408 ft)
Last Update:
3:56 am MDT Aug 10, 2025
Forecast Valid:
6am MDT Aug 10, 2025-6pm MDT Aug 16, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation