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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

59°F

15°C

Humidity 93%
Wind Speed SW 13 mph
Barometer 29.71 in (1005.9 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 26 Dec 6:54 am CST
Extended Forecast for

Blue Mound IL

  • Today

    Today: Patchy fog before 10am. Otherwise, partly sunny, with a high near 62. Southwest wind 9 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 62 °F

    Patchy Fog
    then Partly
    Sunny

  • Tonight

    Tonight: Patchy fog between 9pm and 5am. Otherwise, mostly cloudy, with a low around 42. Northwest wind 5 to 7 mph becoming light and variable.

    Low: 42 °F

    Patchy Fog

  • Saturday

    Saturday: Partly sunny, with a high near 55. Southeast wind 7 to 14 mph, with gusts as high as 21 mph.

    High: 55 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of rain after midnight. Cloudy, with a temperature rising to around 61 by 5am. South southwest wind 10 to 14 mph, with gusts as high as 21 mph.

    Low: 55 °F⇑

    Cloudy then
    Chance Rain

  • Sunday

    Sunday: Rain likely before noon, then showers after noon. High near 65. South southwest wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 65 °F

    Showers

  • Sunday Night

    Sunday Night: Rain showers likely before 9pm, then rain and snow likely between 9pm and midnight. Mostly cloudy, with a low around 18. Blustery, with a west northwest wind 16 to 26 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 18 °F

    Blustery.
    Rain/Snow
    Likely then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 25. Blustery, with a northwest wind 18 to 26 mph, with gusts as high as 34 mph.

    High: 25 °F

    Mostly Sunny
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 15.

    Low: 15 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 32.

    High: 32 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, partly sunny, with a high near 62. Southwest wind 9 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.
Tonight
Patchy fog between 9pm and 5am. Otherwise, mostly cloudy, with a low around 42. Northwest wind 5 to 7 mph becoming light and variable.
Saturday
Partly sunny, with a high near 55. Southeast wind 7 to 14 mph, with gusts as high as 21 mph.
Saturday Night
A 50 percent chance of rain after midnight. Cloudy, with a temperature rising to around 61 by 5am. South southwest wind 10 to 14 mph, with gusts as high as 21 mph.
Sunday
Rain likely before noon, then showers after noon. High near 65. South southwest wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
Rain showers likely before 9pm, then rain and snow likely between 9pm and midnight. Mostly cloudy, with a low around 18. Blustery, with a west northwest wind 16 to 26 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Mostly sunny, with a high near 25. Blustery, with a northwest wind 18 to 26 mph, with gusts as high as 34 mph.
Monday Night
Mostly clear, with a low around 15.
Tuesday
Sunny, with a high near 32.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Mostly sunny, with a high near 34.
Wednesday Night
Partly cloudy, with a low around 16.
New Year's Day
Mostly sunny, with a high near 30.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Blue Mound IL
 39.69°N 89.12°W (Elev. 614 ft)
Last Update:
3:16 am CST Dec 26, 2025
Forecast Valid:
7am CST Dec 26, 2025-6pm CST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation