National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Harrisburg-Raleigh Airport (KHSB)

Lat: 37.81°NLon: 88.54°WElev: 387ft.

Overcast

30°F

-1°C

Humidity 78%
Wind Speed N 13 mph
Barometer 30.33 in
Dewpoint 24°F (-4°C)
Visibility 7.00 mi
Wind Chill20°F (-7°C)
Last update 4 Dec 6:55 am CST
Extended Forecast for

Harrisburg IL

  • Today

    Today: Mostly cloudy, with a high near 31. North wind 5 to 9 mph becoming light in the afternoon.

    High: 31 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 19. Calm wind.

    Low: 19 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 41. Calm wind becoming south southwest around 5 mph.

    High: 41 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26. Light southwest wind.

    Low: 26 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 44. Calm wind.

    High: 44 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain showers between midnight and 3am, then a slight chance of freezing rain after 3am. Mostly cloudy, with a low around 28. Light east northeast wind. Chance of precipitation is 20%.

    Low: 28 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Freezing
    Rain

  • Sunday

    Sunday: A 20 percent chance of showers before noon. Mostly cloudy, with a high near 40. North wind 5 to 8 mph.

    High: 40 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22. North wind around 6 mph.

    Low: 22 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 36. North wind around 5 mph becoming calm in the afternoon.

    High: 36 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 31. North wind 5 to 9 mph becoming light in the afternoon.
Tonight
Mostly cloudy, with a low around 19. Calm wind.
Friday
Sunny, with a high near 41. Calm wind becoming south southwest around 5 mph.
Friday Night
Partly cloudy, with a low around 26. Light southwest wind.
Saturday
Mostly sunny, with a high near 44. Calm wind.
Saturday Night
A slight chance of rain showers between midnight and 3am, then a slight chance of freezing rain after 3am. Mostly cloudy, with a low around 28. Light east northeast wind. Chance of precipitation is 20%.
Sunday
A 20 percent chance of showers before noon. Mostly cloudy, with a high near 40. North wind 5 to 8 mph.
Sunday Night
Mostly cloudy, with a low around 22. North wind around 6 mph.
Monday
Mostly sunny, with a high near 36. North wind around 5 mph becoming calm in the afternoon.
Monday Night
Partly cloudy, with a low around 22. Calm wind becoming south southwest around 5 mph after midnight.
Tuesday
Mostly sunny, with a high near 45. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly cloudy, with a low around 32. South southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday
A chance of showers. Mostly cloudy, with a high near 49. South southwest wind 8 to 13 mph, with gusts as high as 21 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.72°N 88.55°W
Last Update:
6:41 am CST Dec 4, 2025
Forecast Valid:
7am CST Dec 4, 2025-6pm CST Dec 10, 2025
 
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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