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

71°F

22°C

Humidity 47%
Wind Speed E 6 mph
Barometer 30.24 in (1023.6 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 23 Jul 10:54 am CDT
Extended Forecast for

2 Miles NW Decatur IL

  • Today

    Today: Sunny, with a high near 77. East northeast wind around 6 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 59. East wind 3 to 5 mph.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of showers between 4pm and 5pm. Mostly cloudy, with a high near 77. Light and variable wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 77 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers after 7pm. Mostly cloudy, with a low around 62. South southeast wind 3 to 5 mph.

    Low: 62 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 83. South southeast wind 5 to 7 mph.

    High: 83 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 69. South wind around 5 mph becoming calm in the evening.

    Low: 69 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 90. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 90 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 94.

    High: 94 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 77. East northeast wind around 6 mph.
Tonight
Partly cloudy, with a low around 59. East wind 3 to 5 mph.
Friday
A slight chance of showers between 4pm and 5pm. Mostly cloudy, with a high near 77. Light and variable wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
A 30 percent chance of showers after 7pm. Mostly cloudy, with a low around 62. South southeast wind 3 to 5 mph.
Saturday
Mostly cloudy, with a high near 83. South southeast wind 5 to 7 mph.
Saturday Night
Partly cloudy, with a low around 69. South wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 90. Calm wind becoming north northwest around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 72.
Monday
Mostly sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 73.
Tuesday
Mostly sunny, with a high near 90.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Decatur IL
 39.86°N 88.97°W (Elev. 676 ft)
Last Update:
10:36 am CDT Jul 23, 2026
Forecast Valid:
11am CDT Jul 23, 2026-6pm CDT Jul 29, 2026
 
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