Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Light Rain
42°F
6°C
| Humidity | 89% |
| Wind Speed | W 15 G 39 mph |
| Barometer | 29.37 in (994.7 mb) |
| Dewpoint | 39°F (4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 34°F (1°C) |
| Last update | 15 Mar 7:54 pm CDT |
Extended Forecast for
Decatur IL
Wind Advisory March 15, 08:16pm until March 16, 10:00am
NOW until 10:00am Mon
Wind Advisory
Tonight
Low: 21 °F
Rain/Snow
Likely and
Patchy
Blowing SnowMonday
High: 26 °F
Chance Snow
and Patchy
Blowing SnowMonday Night
Low: 11 °F
Mostly Cloudy
and Blustery
then Mostly
CloudyTuesday
High: 27 °F
Mostly Sunny
Tuesday Night
Low: 24 °F
Chance Snow
Wednesday
High: 51 °F
Gradual
ClearingWednesday Night
Low: 37 °F
Partly Cloudy
Thursday
High: 63 °F
Mostly Sunny
Detailed Forecast
Tonight
Rain likely before 11pm, then rain and snow likely between 11pm and 1am, then a chance of snow after 1am. Patchy blowing snow after 1am. Cloudy, with a low around 21. Blustery, with a west northwest wind 21 to 26 mph, with gusts as high as 43 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.
Monday
A 40 percent chance of snow, mainly before 1pm. Patchy blowing snow. Cloudy, with a high near 26. Wind chill values between 4 and 10. Blustery, with a west northwest wind 23 to 29 mph, with gusts as high as 44 mph.
Monday Night
Mostly cloudy, with a low around 11. Wind chill values between -5 and 5. Blustery, with a west northwest wind 15 to 22 mph, with gusts as high as 31 mph.
Tuesday
Mostly sunny, with a high near 27. Wind chill values between -5 and 5. West northwest wind 7 to 13 mph, with gusts as high as 20 mph.
Tuesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 24. South southeast wind 5 to 14 mph, with gusts as high as 24 mph.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 51. South southwest wind 11 to 14 mph, with gusts as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 37. South southwest wind around 6 mph.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 69.
Friday Night
Mostly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 70.
Saturday Night
Mostly clear, with a low around 43.
Sunday
Mostly sunny, with a high near 67.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Decatur IL
39.84°N 88.94°W (Elev. 692 ft)
39.84°N 88.94°W (Elev. 692 ft)
7:46 pm CDT Mar 15, 2026
8pm CDT Mar 15, 2026-6pm CDT Mar 22, 2026
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