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

52°F

11°C

Humidity 39%
Wind Speed NE 15 G 22 mph
Barometer 30.38 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 23 Mar 3:15 pm CDT
Extended Forecast for

Harrisburg IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 56. North northeast wind around 11 mph, with gusts as high as 18 mph.

    High: 56 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. East northeast wind 5 to 7 mph.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 63. East wind 3 to 6 mph.

    High: 63 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 45. Light east wind.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. Calm wind becoming south southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61. South wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 85. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 45. South southwest wind 15 to 17 mph becoming northwest after midnight. Winds could gust as high as 25 mph.

    Low: 45 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 54. North wind around 17 mph, with gusts as high as 26 mph.

    High: 54 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 56. North northeast wind around 11 mph, with gusts as high as 18 mph.
Tonight
Mostly cloudy, with a low around 37. East northeast wind 5 to 7 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 63. East wind 3 to 6 mph.
Tuesday Night
Partly cloudy, with a low around 45. Light east wind.
Wednesday
Mostly sunny, with a high near 74. Calm wind becoming south southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 61. South wind 6 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 85. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Thursday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 45. South southwest wind 15 to 17 mph becoming northwest after midnight. Winds could gust as high as 25 mph.
Friday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 54. North wind around 17 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around 32. North wind 9 to 15 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 57. Northeast wind around 7 mph.
Saturday Night
Partly cloudy, with a low around 37. Light east southeast wind.
Sunday
Mostly sunny, with a high near 65. South 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 88.58°W
Last Update:
1:26 pm CDT Mar 23, 2026
Forecast Valid:
3pm CDT Mar 23, 2026-6pm CDT Mar 29, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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