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

39°F

4°C

Humidity 47%
Wind Speed NW 7 mph
Barometer 30.20 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 21 Feb 1:35 pm CST
Extended Forecast for

Harrisburg IL

  • This Afternoon

    This Afternoon: A chance of sprinkles before 2pm. Mostly cloudy, with a high near 42. North northwest wind 6 to 8 mph.

    High: 42 °F

    Chance
    Sprinkles

  • Tonight

    Tonight: Mostly clear, with a low around 24. Northwest wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 35. Northwest wind 11 to 18 mph, with gusts as high as 28 mph.

    High: 35 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 18. Northwest wind 11 to 13 mph, with gusts as high as 22 mph.

    Low: 18 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 34. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 34 °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 wind becoming south southwest 10 to 15 mph in the morning. Winds could gust as high as 24 mph.

    High: 48 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 60. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 60 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A chance of sprinkles before 2pm. Mostly cloudy, with a high near 42. North northwest wind 6 to 8 mph.
Tonight
Mostly clear, with a low around 24. Northwest wind 6 to 11 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 35. Northwest wind 11 to 18 mph, with gusts as high as 28 mph.
Sunday Night
Partly cloudy, with a low around 18. Northwest wind 11 to 13 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 34. 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 wind becoming south southwest 10 to 15 mph in the morning. Winds could gust as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 40. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Wednesday
Mostly cloudy, with a high near 60. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 41. Southwest wind around 9 mph becoming north northwest after midnight.
Thursday
A chance of showers. Partly sunny, with a high near 54. West northwest wind 7 to 10 mph.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 31. Northwest wind around 6 mph becoming light and variable.
Friday
Sunny, with a high near 58. South southwest wind 5 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:
11:46 am CST Feb 21, 2026
Forecast Valid:
1pm CST Feb 21, 2026-6pm CST Feb 27, 2026
 
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Additional Resources

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Chance of Precipitation