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.

Mostly Cloudy

30°F

-1°C

Humidity 86%
Wind Speed Calm
Barometer 30.24 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 13 Feb 4:35 am CST
Extended Forecast for

Harrisburg IL

  • Today

    Today: Sunny, with a high near 57. Light and variable wind becoming south southeast 5 to 8 mph in the morning.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 36. South southeast wind around 5 mph becoming calm in the evening.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: Rain likely, mainly after 3pm. Mostly cloudy, with a high near 56. Calm wind becoming east southeast around 6 mph in the afternoon. Chance of precipitation is 60%.

    High: 56 °F

    Slight Chance
    Rain then
    Rain Likely

  • Saturday Night

    Saturday Night: Rain. Low around 46. East southeast wind around 6 mph. Chance of precipitation is 100%.

    Low: 46 °F

    Rain

  • Sunday

    Sunday: Rain likely, mainly before noon. Mostly cloudy, with a high near 55. North northeast wind 6 to 10 mph. Chance of precipitation is 60%.

    High: 55 °F

    Rain Likely
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39. North northeast wind around 6 mph becoming calm in the evening.

    Low: 39 °F

    Partly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 60. Light and variable wind.

    High: 60 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 44. Light south wind.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 65. South wind 5 to 11 mph, with gusts as high as 20 mph.

    High: 65 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 57. Light and variable wind becoming south southeast 5 to 8 mph in the morning.
Tonight
Partly cloudy, with a low around 36. South southeast wind around 5 mph becoming calm in the evening.
Saturday
Rain likely, mainly after 3pm. Mostly cloudy, with a high near 56. Calm wind becoming east southeast around 6 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
Rain. Low around 46. East southeast wind around 6 mph. Chance of precipitation is 100%.
Sunday
Rain likely, mainly before noon. Mostly cloudy, with a high near 55. North northeast wind 6 to 10 mph. Chance of precipitation is 60%.
Sunday Night
Partly cloudy, with a low around 39. North northeast wind around 6 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 60. Light and variable wind.
Monday Night
Mostly cloudy, with a low around 44. Light south wind.
Tuesday
Mostly cloudy, with a high near 65. South wind 5 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 56. South wind 10 to 14 mph, with gusts as high as 25 mph.
Wednesday
Mostly cloudy, with a high near 71. Southwest wind 13 to 16 mph, with gusts as high as 26 mph.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 51. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.
Thursday
Partly sunny, with a high near 67. South southwest wind 9 to 13 mph, with gusts as high as 21 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:
4:42 am CST Feb 13, 2026
Forecast Valid:
4am CST Feb 13, 2026-6pm CST Feb 19, 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