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.

A Few Clouds

81°F

27°C

Humidity 54%
Wind Speed NW 13 mph
Barometer 30.01 in (1015.6 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 22 Aug 3:54 pm CDT
Extended Forecast for

2 Miles WSW Decatur IL

  • This Afternoon

    This Afternoon: A chance of sprinkles after 5pm. Sunny, with a high near 82. Northwest wind around 11 mph, with gusts as high as 20 mph.

    High: 82 °F

    Chance
    Sprinkles

  • Tonight

    Tonight: A chance of sprinkles before 8pm. Mostly clear, with a low around 60. Northwest wind 3 to 8 mph.

    Low: 60 °F

    Chance
    Sprinkles

  • Sunday

    Sunday: Sunny, with a high near 81. Light northwest wind increasing to 5 to 9 mph in the morning.

    High: 81 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58. North northwest wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 81. Light and variable wind.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. Light east southeast wind.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. East wind around 5 mph becoming calm in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A chance of sprinkles after 5pm. Sunny, with a high near 82. Northwest wind around 11 mph, with gusts as high as 20 mph.
Tonight
A chance of sprinkles before 8pm. Mostly clear, with a low around 60. Northwest wind 3 to 8 mph.
Sunday
Sunny, with a high near 81. Light northwest wind increasing to 5 to 9 mph in the morning.
Sunday Night
Partly cloudy, with a low around 58. North northwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 81. Light and variable wind.
Monday Night
Partly cloudy, with a low around 61. Light east southeast wind.
Tuesday
Mostly sunny, with a high near 83. East wind around 5 mph becoming calm in the afternoon.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 64.
Saturday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Decatur IL
 39.84°N 88.97°W (Elev. 676 ft)
Last Update:
4:01 pm CDT Aug 22, 2026
Forecast Valid:
4pm CDT Aug 22, 2026-6pm CDT Aug 29, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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