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

45°F

7°C

Humidity 61%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 6 Dec 11:35 am CST
Extended Forecast for

Harrisburg IL

  • Today

    Today: Sunny, with a high near 47. Calm wind.

    High: 47 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 34. Calm wind.

    Low: 34 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 46. Calm wind becoming north northwest 5 to 9 mph in the morning.

    High: 46 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A slight chance of rain and snow showers before 9pm, then a slight chance of snow showers. Cloudy, with a low around 24. North wind 6 to 9 mph. Chance of precipitation is 20%.

    Low: 24 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 36. North wind around 6 mph becoming calm in the afternoon.

    High: 36 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 22. Calm wind becoming south southwest 5 to 7 mph after midnight.

    Low: 22 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47. South southwest wind 8 to 14 mph, with gusts as high as 21 mph.

    High: 47 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers before noon. Partly sunny, with a high near 50. Southwest wind 9 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 50 °F

    Slight Chance
    Showers then
    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 47. Calm wind.
Tonight
Increasing clouds, with a low around 34. Calm wind.
Sunday
Mostly cloudy, with a high near 46. Calm wind becoming north northwest 5 to 9 mph in the morning.
Sunday Night
A slight chance of rain and snow showers before 9pm, then a slight chance of snow showers. Cloudy, with a low around 24. North wind 6 to 9 mph. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 36. North wind around 6 mph becoming calm in the afternoon.
Monday Night
Mostly clear, with a low around 22. Calm wind becoming south southwest 5 to 7 mph after midnight.
Tuesday
Mostly sunny, with a high near 47. South southwest wind 8 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 38. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
A slight chance of showers before noon. Partly sunny, with a high near 50. Southwest wind 9 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.
Wednesday Night
Mostly cloudy, with a low around 28. Northwest wind 5 to 7 mph.
Thursday
A slight chance of showers. Mostly cloudy, with a high near 41. Northwest wind 6 to 9 mph becoming south southeast in the afternoon.
Thursday Night
Mostly cloudy, with a low around 24. East southeast wind around 6 mph becoming northwest in the evening.
Friday
Partly sunny, with a high near 33. North northwest wind 6 to 9 mph.
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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:
10:56 am CST Dec 6, 2025
Forecast Valid:
11am CST Dec 6, 2025-6pm CST Dec 12, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation