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

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

26°C

78°F

Humidity 74%
Wind Speed Calm
Barometer 1014.7 mb (29.98 in)
Dewpoint 21°C (69°F)
Visibility 16 km
Heat Index27°C (80°F)
Last update 12 Jul 8:54 pm CDT
Extended Forecast for

3 Miles SW Dewitt IL

  • Tonight

    Tonight: Partly cloudy, with a low around 19. West wind 8 to 10 km/h.

    Low: 19 °C

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers, mainly between 2pm and 5pm. Partly sunny, with a high near 29. North wind 5 to 11 km/h becoming south southeast in the morning.

    High: 29 °C

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 19. West wind 5 to 8 km/h becoming calm.

    Low: 19 °C

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 31. Southeast wind 8 to 10 km/h becoming south southwest in the afternoon.

    High: 31 °C

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 21. South southeast wind 8 to 10 km/h.

    Low: 21 °C

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 31. South wind 10 to 14 km/h.

    High: 31 °C

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 22. South wind 10 to 13 km/h.

    Low: 22 °C

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 31. Chance of precipitation is 60%.

    High: 31 °C

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.

    Low: 21 °C

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 19. West wind 8 to 10 km/h.
Sunday
A 30 percent chance of showers, mainly between 2pm and 5pm. Partly sunny, with a high near 29. North wind 5 to 11 km/h becoming south southeast in the morning.
Sunday Night
Partly cloudy, with a low around 19. West wind 5 to 8 km/h becoming calm.
Monday
Sunny, with a high near 31. Southeast wind 8 to 10 km/h becoming south southwest in the afternoon.
Monday Night
Partly cloudy, with a low around 21. South southeast wind 8 to 10 km/h.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 31. South wind 10 to 14 km/h.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 22. South wind 10 to 13 km/h.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 31. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 31. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 19.
Friday
Partly sunny, with a high near 29.
Friday Night
Partly cloudy, with a low around 18.
Saturday
Mostly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Dewitt IL
 40.17°N 88.78°W (Elev. 699 m)
Last Update:
5:41 pm CDT Jul 12, 2025
Forecast Valid:
9pm CDT Jul 12, 2025-6pm CDT Jul 19, 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