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.

Fair

44°F

7°C

Humidity 93%
Wind Speed NW 3 mph
Barometer 29.89 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 12 Nov 4:15 am CST
Extended Forecast for

Harrisburg IL

  • Today

    Today: A chance of sprinkles between noon and 2pm, then a slight chance of showers after 2pm. Partly sunny, with a high near 55. West northwest wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 20%.

    High: 55 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: A chance of sprinkles before 7pm. Partly cloudy, with a low around 32. North northwest wind 5 to 14 mph, with gusts as high as 22 mph.

    Low: 32 °F

    Chance
    Sprinkles

  • Friday

    Friday: Partly sunny, with a high near 47. North northwest wind 8 to 13 mph, with gusts as high as 18 mph.

    High: 47 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming clear, with a low around 26. North northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 26 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 49. Calm wind becoming northwest around 5 mph.

    High: 49 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25. Calm wind.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 52. Calm wind.

    High: 52 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 27. Calm wind.

    Low: 27 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 52. Light and variable wind.

    High: 52 °F

    Sunny

Detailed Forecast

Today
A chance of sprinkles between noon and 2pm, then a slight chance of showers after 2pm. Partly sunny, with a high near 55. West northwest wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 20%.
Tonight
A chance of sprinkles before 7pm. Partly cloudy, with a low around 32. North northwest wind 5 to 14 mph, with gusts as high as 22 mph.
Friday
Partly sunny, with a high near 47. North northwest wind 8 to 13 mph, with gusts as high as 18 mph.
Friday Night
Mostly cloudy, then gradually becoming clear, with a low around 26. North northwest wind 5 to 7 mph becoming calm in the evening.
Saturday
Sunny, with a high near 49. Calm wind becoming northwest around 5 mph.
Saturday Night
Mostly clear, with a low around 25. Calm wind.
Sunday
Sunny, with a high near 52. Calm wind.
Sunday Night
Mostly clear, with a low around 27. Calm wind.
Monday
Sunny, with a high near 52. Light and variable wind.
Monday Night
Mostly clear, with a low around 26. Calm wind.
Tuesday
Sunny, with a high near 56. Light and variable wind.
Tuesday Night
Clear, with a low around 28. Calm wind.
Wednesday
Sunny, with a high near 59. Light and variable wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.52°W
Last Update:
3:41 am CST Nov 12, 2026
Forecast Valid:
4am CST Nov 12, 2026-6pm CST Nov 18, 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