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

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

A Few Clouds

24°C

76°F

Humidity 69%
Wind Speed SE 9 km/h
Barometer 1009.1 mb (29.81 in)
Dewpoint 18°C (65°F)
Visibility 16 km
Heat Index26°C (78°F)
Last update 17 May 11:54 am CDT
Extended Forecast for

Decatur IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 26. South wind 5 to 8 km/h.

    High: 26 °C

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 16. South wind 3 to 8 km/h.

    Low: 16 °C

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 28. Calm wind becoming south 5 to 10 km/h in the morning.

    High: 28 °C

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 17. Calm wind.

    Low: 17 °C

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 30. West wind 5 to 10 km/h becoming south in the afternoon.

    High: 30 °C

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 19. South southeast wind around 11 km/h.

    Low: 19 °C

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 29. South wind 13 to 21 km/h, with gusts as high as 32 km/h.

    High: 29 °C

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 19.

    Low: 19 °C

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 30. Chance of precipitation is 60%.

    High: 30 °C

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 26. South wind 5 to 8 km/h.
Tonight
A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 16. South wind 3 to 8 km/h.
Saturday
Mostly sunny, with a high near 28. Calm wind becoming south 5 to 10 km/h in the morning.
Saturday Night
Mostly clear, with a low around 17. Calm wind.
Sunday
Sunny, with a high near 30. West wind 5 to 10 km/h becoming south in the afternoon.
Sunday Night
Partly cloudy, with a low around 19. South southeast wind around 11 km/h.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 29. South wind 13 to 21 km/h, with gusts as high as 32 km/h.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 19.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 30. Chance of precipitation is 60%.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 18. Chance of precipitation is 80%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 26.
Wednesday Night
A chance of showers. Mostly clear, with a low around 14.
Thursday
Sunny, with a high near 26.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Decatur IL
 39.86°N 88.94°W (Elev. 682 m)
Last Update:
11:57 am CDT May 17, 2024
Forecast Valid:
12pm CDT May 17, 2024-6pm CDT May 23, 2024
 
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