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Heavy Rain and Thunderstorms in the Plains; Snow in the Northern Rockies

A storm system moving eastward will bring widespread showers and thunderstorms over parts of the Northern Plains to the Southern Plains and Upper Great Lakes through Friday. Heavy snow will continue over parts of the Northern Rockies. Read More >

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

59°F

15°C

Humidity 96%
Wind Speed Calm
Barometer 30.12 in (1020.2 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 15 Oct 10:56 pm CDT
Extended Forecast for

Dahlgren IL

  • Tonight

    Tonight: Mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. East wind 5 to 9 mph.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 53. East southeast wind around 6 mph.

    Low: 53 °F

    Increasing
    Clouds

  • Friday

    Friday: Partly sunny, with a high near 79. South southeast wind 6 to 9 mph.

    High: 79 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60. South southeast wind 5 to 7 mph.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 82. South southwest wind 9 to 18 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 82 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 51. South southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

    Low: 51 °F

    Showers

  • Sunday

    Sunday: A chance of showers, mainly before 1pm. Mostly sunny, with a high near 65. West northwest wind 14 to 18 mph, with gusts as high as 24 mph.

    High: 65 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41. West southwest wind 5 to 9 mph.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 56. Calm wind.
Thursday
Sunny, with a high near 80. East wind 5 to 9 mph.
Thursday Night
Increasing clouds, with a low around 53. East southeast wind around 6 mph.
Friday
Partly sunny, with a high near 79. South southeast wind 6 to 9 mph.
Friday Night
Partly cloudy, with a low around 60. South southeast wind 5 to 7 mph.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 82. South southwest wind 9 to 18 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Saturday Night
Showers and possibly a thunderstorm. Low around 51. South southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Sunday
A chance of showers, mainly before 1pm. Mostly sunny, with a high near 65. West northwest wind 14 to 18 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around 41. West southwest wind 5 to 9 mph.
Monday
Sunny, with a high near 72. Southwest wind 6 to 13 mph.
Monday Night
Mostly clear, with a low around 49. South southwest wind 7 to 10 mph.
Tuesday
A slight chance of showers. Sunny, with a high near 75. West southwest wind 9 to 15 mph, with gusts as high as 21 mph.
Tuesday Night
A slight chance of showers. Mostly clear, with a low around 46. Southwest wind 7 to 11 mph.
Wednesday
Mostly sunny, with a high near 70. West wind 7 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dahlgren IL
 38.19°N 88.7°W
Last Update:
10:46 pm CDT Oct 15, 2025
Forecast Valid:
11pm CDT Oct 15, 2025-6pm CDT Oct 22, 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