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

46°F

8°C

Humidity 58%
Wind Speed SE 5 mph
Barometer 30.34 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 12 Feb 10:35 am CST
Extended Forecast for

Harrisburg IL

  • Today

    Today: Partly sunny, with a high near 51. Calm wind becoming east around 6 mph in the afternoon.

    High: 51 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 31. East southeast wind 3 to 5 mph.

    Low: 31 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 56. Calm wind becoming south southeast around 6 mph.

    High: 56 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 36. Calm wind.

    Low: 36 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Rain likely, mainly after noon. Cloudy, with a high near 53. Calm wind becoming east southeast around 6 mph in the afternoon. Chance of precipitation is 60%.

    High: 53 °F

    Chance Rain
    then Rain
    Likely

  • Saturday Night

    Saturday Night: Rain. Low around 45. East southeast wind around 7 mph. Chance of precipitation is 90%.

    Low: 45 °F

    Rain

  • Sunday

    Sunday: A 50 percent chance of rain, mainly before noon. Partly sunny, with a high near 55. North northeast wind 7 to 10 mph.

    High: 55 °F

    Chance Rain
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. North wind around 6 mph becoming calm in the evening.

    Low: 37 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 60. Calm wind becoming south southeast around 5 mph.

    High: 60 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 51. Calm wind becoming east around 6 mph in the afternoon.
Tonight
Partly cloudy, with a low around 31. East southeast wind 3 to 5 mph.
Friday
Sunny, with a high near 56. Calm wind becoming south southeast around 6 mph.
Friday Night
Increasing clouds, with a low around 36. Calm wind.
Saturday
Rain likely, mainly after noon. Cloudy, with a high near 53. Calm wind becoming east southeast around 6 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
Rain. Low around 45. East southeast wind around 7 mph. Chance of precipitation is 90%.
Sunday
A 50 percent chance of rain, mainly before noon. Partly sunny, with a high near 55. North northeast wind 7 to 10 mph.
Sunday Night
Mostly clear, with a low around 37. North wind around 6 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 60. Calm wind becoming south southeast around 5 mph.
Monday Night
Mostly cloudy, with a low around 44. Calm wind becoming south around 5 mph after midnight.
Tuesday
Mostly cloudy, with a high near 65. South wind 6 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 55. South southwest wind 11 to 14 mph, with gusts as high as 25 mph.
Wednesday
A slight chance of rain. Mostly cloudy, with a high near 67. Southwest wind 10 to 15 mph, with gusts as high as 24 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:
10:41 am CST Feb 12, 2026
Forecast Valid:
10am CST Feb 12, 2026-6pm CST Feb 18, 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