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

36°F

2°C

Humidity 86%
Wind Speed N 10 mph
Barometer 30.20 in
Dewpoint 32°F (0°C)
Visibility 7.00 mi
Wind Chill29°F (-2°C)
Last update 7 Dec 9:55 pm CST
Extended Forecast for

Harrisburg IL

  • Tonight

    Tonight: A slight chance of rain and snow before 4am, then a chance of flurries between 4am and 5am. Cloudy, with a low around 27. North wind 8 to 11 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Rain then
    Slight Chance
    Rain/Snow

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 38. North wind 3 to 8 mph.

    High: 38 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 25. Calm wind becoming south southwest 5 to 9 mph after midnight. Winds could gust as high as 18 mph.

    Low: 25 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. Southwest wind 13 to 15 mph, with gusts as high as 28 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 51. Southwest wind 8 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain and snow showers after midnight. Mostly cloudy, with a low around 28. Northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 28 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 39. Light and variable wind becoming east southeast 5 to 7 mph in the morning.

    High: 39 °F

    Chance
    Rain/Snow
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 21. North northwest wind 5 to 8 mph.

    Low: 21 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of rain and snow before 4am, then a chance of flurries between 4am and 5am. Cloudy, with a low around 27. North wind 8 to 11 mph. Chance of precipitation is 20%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 38. North wind 3 to 8 mph.
Monday Night
Mostly clear, with a low around 25. Calm wind becoming south southwest 5 to 9 mph after midnight. Winds could gust as high as 18 mph.
Tuesday
Mostly sunny, with a high near 49. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 41. Southwest wind 13 to 15 mph, with gusts as high as 28 mph.
Wednesday
Partly sunny, with a high near 51. Southwest wind 8 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
A slight chance of rain and snow showers after midnight. Mostly cloudy, with a low around 28. Northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Thursday
A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 39. Light and variable wind becoming east southeast 5 to 7 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 21. North northwest wind 5 to 8 mph.
Friday
Partly sunny, with a high near 30. Northwest wind 8 to 11 mph.
Friday Night
Partly cloudy, with a low around 8. Northwest wind around 8 mph.
Saturday
Mostly sunny, with a high near 23. Northwest wind 5 to 8 mph.
Saturday Night
Partly cloudy, with a low around 10. Calm wind becoming north northwest around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 28. North northwest wind 5 to 7 mph becoming south southwest in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.72°N 88.55°W
Last Update:
8:01 pm CST Dec 7, 2025
Forecast Valid:
10pm CST Dec 7, 2025-6pm CST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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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