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

50°F

10°C

Humidity 34%
Wind Speed NW 10 mph
Barometer 29.95 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 20 Feb 4:35 pm CST
Extended Forecast for

Harrisburg IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 49. West northwest wind around 6 mph.

    High: 49 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 31. Calm wind.

    Low: 31 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 44. North wind 3 to 7 mph.

    High: 44 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24. Northwest wind 6 to 9 mph, with gusts as high as 18 mph.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 36. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.

    High: 36 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 18. Northwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 18 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 35. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 35 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 17. Light and variable wind.

    Low: 17 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 48. Light south southwest wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 23 mph.

    High: 48 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 49. West northwest wind around 6 mph.
Tonight
Increasing clouds, with a low around 31. Calm wind.
Saturday
Partly sunny, with a high near 44. North wind 3 to 7 mph.
Saturday Night
Mostly clear, with a low around 24. Northwest wind 6 to 9 mph, with gusts as high as 18 mph.
Sunday
Sunny, with a high near 36. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 18. Northwest wind around 11 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 35. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 17. Light and variable wind.
Tuesday
Partly sunny, with a high near 48. Light south southwest wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 39. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 59. South southwest wind 11 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 39. South southwest wind 6 to 10 mph becoming northwest after midnight.
Thursday
A chance of showers. Partly sunny, with a high near 53. North northwest wind 6 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.55°W
Last Update:
3:22 pm CST Feb 20, 2026
Forecast Valid:
4pm CST Feb 20, 2026-6pm CST Feb 26, 2026
 
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Additional Resources

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation