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 89%
Wind Speed W 12 mph
Barometer 29.75 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 14 Jan 7:15 am CST
Extended Forecast for

Harrisburg IL

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 32 by 5pm. Breezy, with a north northwest wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 45 °F⇓

    Cloudy then
    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 18. North northwest wind 7 to 17 mph, with gusts as high as 29 mph.

    Low: 18 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 33. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.

    High: 33 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 24. Light south southwest wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 23 mph.

    Low: 24 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 46. West wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 46 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 22. West northwest wind 7 to 9 mph.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 31. West wind 7 to 14 mph, with gusts as high as 21 mph.

    High: 31 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 10. North northwest wind around 6 mph.

    Low: 10 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 26. Northwest wind 6 to 10 mph becoming west southwest in the afternoon.

    High: 26 °F

    Sunny

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 32 by 5pm. Breezy, with a north northwest wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.
Tonight
Mostly clear, with a low around 18. North northwest wind 7 to 17 mph, with gusts as high as 29 mph.
Thursday
Sunny, with a high near 33. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.
Thursday Night
Mostly cloudy, with a low around 24. Light south southwest wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 23 mph.
Friday
Partly sunny, with a high near 46. West wind 8 to 14 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around 22. West northwest wind 7 to 9 mph.
Saturday
Partly sunny, with a high near 31. West wind 7 to 14 mph, with gusts as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 10. North northwest wind around 6 mph.
Sunday
Sunny, with a high near 26. Northwest wind 6 to 10 mph becoming west southwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 15. Southwest wind 6 to 9 mph.
M.L.King Day
Mostly sunny, with a high near 33. West northwest wind 7 to 13 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 12. West northwest wind 3 to 6 mph.
Tuesday
Sunny, with a high near 35. West wind 3 to 7 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:
6:11 am CST Jan 14, 2026
Forecast Valid:
7am CST Jan 14, 2026-6pm CST Jan 20, 2026
 
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