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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

8°F

-13°C

Humidity 60%
Wind Speed SW 5 mph
Barometer 30.39 in (1030.6 mb)
Dewpoint -3°F (-19°C)
Visibility 10.00 mi
Wind Chill-1°F (-18°C)
Last update 20 Jan 12:54 am CST
Extended Forecast for

2 Miles ENE Harristown IL

  • Overnight

    Overnight: Partly cloudy, with a low around 7. Wind chill values between -3 and 2. Southwest wind around 6 mph.

    Low: 7 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30. Wind chill values between -2 and 8. South southwest wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a temperature rising to around 32 by 4am. Breezy, with a south wind 10 to 20 mph, with gusts as high as 29 mph.

    Low: 25 °F⇑

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 38. West wind 11 to 18 mph, with gusts as high as 28 mph.

    High: 38 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 19. West northwest wind 10 to 15 mph, with gusts as high as 23 mph.

    Low: 19 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 30. West northwest wind 7 to 11 mph, with gusts as high as 17 mph.

    High: 30 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 3. West northwest wind 6 to 14 mph, with gusts as high as 20 mph.

    Low: 3 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 9.

    High: 9 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -3.

    Low: -3 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 7. Wind chill values between -3 and 2. Southwest wind around 6 mph.
Tuesday
Mostly sunny, with a high near 30. Wind chill values between -2 and 8. South southwest wind 6 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a temperature rising to around 32 by 4am. Breezy, with a south wind 10 to 20 mph, with gusts as high as 29 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 38. West wind 11 to 18 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 19. West northwest wind 10 to 15 mph, with gusts as high as 23 mph.
Thursday
Mostly sunny, with a high near 30. West northwest wind 7 to 11 mph, with gusts as high as 17 mph.
Thursday Night
Mostly cloudy, with a low around 3. West northwest wind 6 to 14 mph, with gusts as high as 20 mph.
Friday
Mostly cloudy and cold, with a high near 9.
Friday Night
Mostly cloudy, with a low around -3.
Saturday
Mostly cloudy, with a high near 11.
Saturday Night
Partly cloudy, with a low around 0.
Sunday
Mostly sunny, with a high near 18.
Sunday Night
Partly cloudy, with a low around 7.
Monday
Mostly sunny, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Harristown IL
 39.84°N 89.03°W (Elev. 666 ft)
Last Update:
12:36 am CST Jan 20, 2026
Forecast Valid:
1am CST Jan 20, 2026-6pm CST Jan 26, 2026
 
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Additional Resources

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