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

34°F

1°C

Humidity 76%
Wind Speed Calm
Barometer 30.14 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 13 Feb 11:35 pm CST
Extended Forecast for

Harrisburg IL

  • Tonight

    Tonight: Partly cloudy, with a temperature rising to around 38 by 2am. Calm wind.

    Low: 34 °F⇑

    Partly Cloudy

  • Saturday

    Saturday: Showers, mainly after 2pm. High near 55. Calm wind becoming east southeast around 5 mph in the afternoon. Chance of precipitation is 80%.

    High: 55 °F

    Chance
    Showers then
    Showers

  • Saturday Night

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

    Low: 46 °F

    Showers

  • Sunday

    Sunday: A 50 percent chance of showers before noon. Mostly cloudy, with a high near 55. North northeast wind 6 to 9 mph.

    High: 55 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39. North northeast wind around 5 mph becoming calm in the evening.

    Low: 39 °F

    Partly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 61. Light and variable wind.

    High: 61 °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. Light south wind becoming south southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 65 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 56. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: 56 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a temperature rising to around 38 by 2am. Calm wind.
Saturday
Showers, mainly after 2pm. High near 55. Calm wind becoming east southeast around 5 mph in the afternoon. Chance of precipitation is 80%.
Saturday Night
Showers. Low around 46. East southeast wind around 6 mph. Chance of precipitation is 100%.
Sunday
A 50 percent chance of showers before noon. Mostly cloudy, with a high near 55. North northeast wind 6 to 9 mph.
Sunday Night
Partly cloudy, with a low around 39. North northeast wind around 5 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 61. Light and variable wind.
Monday Night
Mostly cloudy, with a low around 44. Light south wind.
Tuesday
Mostly cloudy, with a high near 65. Light south wind becoming south southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 56. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Wednesday
Mostly cloudy, with a high near 71. Southwest wind 8 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly cloudy, with a low around 52. South southwest wind around 7 mph.
Thursday
A slight chance of showers. Partly sunny, with a high near 69. South southwest wind 7 to 13 mph, with gusts as high as 22 mph.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 46. South southwest wind 7 to 10 mph becoming west after midnight. Winds could gust as high as 18 mph.
Friday
Mostly sunny, with a high near 59. West wind 7 to 9 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:
11:32 pm CST Feb 13, 2026
Forecast Valid:
11pm CST Feb 13, 2026-6pm CST Feb 20, 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