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

37°F

3°C

Humidity 89%
Wind Speed Calm
Barometer 29.97 in (1014.8 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 11 Nov 2:54 am CST
Extended Forecast for

Hammond IL

  • Overnight

    Overnight: Partly cloudy, with a low around 39. Light south wind.

    Low: 39 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: A 30 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Partly sunny, with a high near 67. Light and variable wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 24 mph.

    High: 67 °F

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 40. North northwest wind 10 to 16 mph, with gusts as high as 26 mph.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers between 11am and 3pm. Mostly cloudy, with a high near 48. North northwest wind 13 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    High: 48 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 30. North northwest wind 9 to 15 mph, with gusts as high as 22 mph.

    Low: 30 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 43. North northwest wind 9 to 14 mph, with gusts as high as 18 mph.

    High: 43 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 23. North northwest wind 5 to 7 mph.

    Low: 23 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 23.

    Low: 23 °F

    Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 39. Light south wind.
Veterans Day
A 30 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Partly sunny, with a high near 67. Light and variable wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 24 mph.
Wednesday Night
Mostly cloudy, with a low around 40. North northwest wind 10 to 16 mph, with gusts as high as 26 mph.
Thursday
A chance of showers between 11am and 3pm. Mostly cloudy, with a high near 48. North northwest wind 13 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 30. North northwest wind 9 to 15 mph, with gusts as high as 22 mph.
Friday
Sunny, with a high near 43. North northwest wind 9 to 14 mph, with gusts as high as 18 mph.
Friday Night
Mostly clear, with a low around 23. North northwest wind 5 to 7 mph.
Saturday
Sunny, with a high near 46.
Saturday Night
Clear, with a low around 23.
Sunday
Sunny, with a high near 49.
Sunday Night
Mostly clear, with a low around 26.
Monday
Sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 26.
Tuesday
Sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hammond IL
 39.81°N 88.6°W (Elev. 673 ft)
Last Update:
1:26 am CST Nov 11, 2026
Forecast Valid:
3am CST Nov 11, 2026-6pm CST Nov 17, 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