National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Harrisburg-Raleigh Airport (KHSB)

Lat: 37.81°NLon: 88.54°WElev: 387ft.

Fair

48°F

9°C

Humidity 57%
Wind Speed NW 3 mph
Barometer 30.01 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 28 Feb 1:55 am CST
Extended Forecast for

Harrisburg IL

  • Overnight

    Overnight: Clear, with a low around 41. West wind around 5 mph becoming light and variable.

    Low: 41 °F

    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 69. Light and variable wind becoming east around 6 mph.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers between 8pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 37. Light and variable wind becoming north 5 to 10 mph in the evening. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    Low: 37 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 50. Northeast wind around 10 mph, with gusts as high as 18 mph.

    High: 50 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of rain showers before 9pm, then rain and snow showers likely between 9pm and 3am, then rain showers likely after 3am. Cloudy, with a low around 33. Northeast wind around 9 mph. Chance of precipitation is 60%.

    Low: 33 °F

    Rain/Snow
    Likely

  • Monday

    Monday: A 50 percent chance of showers before noon. Cloudy, with a high near 45. East wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 45 °F

    Chance
    Showers then
    Cloudy

  • Monday Night

    Monday Night: A 50 percent chance of showers. Cloudy, with a low around 40. East wind 6 to 10 mph becoming south after midnight. Winds could gust as high as 21 mph.

    Low: 40 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Cloudy, with a high near 66. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 66 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely. Cloudy, with a low around 55. South southwest wind 7 to 9 mph.

    Low: 55 °F

    Showers
    Likely

Detailed Forecast

Overnight
Clear, with a low around 41. West wind around 5 mph becoming light and variable.
Saturday
Mostly sunny, with a high near 69. Light and variable wind becoming east around 6 mph.
Saturday Night
A slight chance of showers between 8pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 37. Light and variable wind becoming north 5 to 10 mph in the evening. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 50. Northeast wind around 10 mph, with gusts as high as 18 mph.
Sunday Night
A chance of rain showers before 9pm, then rain and snow showers likely between 9pm and 3am, then rain showers likely after 3am. Cloudy, with a low around 33. Northeast wind around 9 mph. Chance of precipitation is 60%.
Monday
A 50 percent chance of showers before noon. Cloudy, with a high near 45. East wind 7 to 10 mph, with gusts as high as 18 mph.
Monday Night
A 50 percent chance of showers. Cloudy, with a low around 40. East wind 6 to 10 mph becoming south after midnight. Winds could gust as high as 21 mph.
Tuesday
A chance of showers and thunderstorms. Cloudy, with a high near 66. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Showers likely. Cloudy, with a low around 55. South southwest wind 7 to 9 mph.
Wednesday
A chance of showers and thunderstorms. Cloudy, with a high near 68. South wind 8 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. South wind 7 to 9 mph.
Thursday
A chance of showers. Mostly cloudy, with a high near 70. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 59. South wind around 7 mph.
Friday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 74. South southwest wind 7 to 11 mph, with gusts as high as 20 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.58°W
Last Update:
12:26 am CST Feb 28, 2026
Forecast Valid:
2am CST Feb 28, 2026-6pm CST Mar 6, 2026
 
Forecast Discussion
 
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Additional Resources

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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