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 and Breezy

80°F

27°C

Humidity 37%
Wind Speed SW 21 G 28 mph
Barometer 29.80 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 26 Mar 6:55 pm CDT
Extended Forecast for

Harrisburg IL

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 45. Breezy, with a south southwest wind 14 to 20 mph becoming north after midnight. Winds could gust as high as 30 mph.

    Low: 45 °F

    Partly Cloudy
    and Breezy
    then Chance
    T-storms

  • Friday

    Friday: Showers and thunderstorms likely, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 56. North wind 14 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    High: 56 °F

    Showers
    Likely then
    Chance
    T-storms

  • Friday Night

    Friday Night: Patchy frost after 5am. Otherwise, mostly clear, with a low around 32. North wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 32 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Patchy frost before 8am. Otherwise, sunny, with a high near 57. North northeast wind around 6 mph becoming east southeast in the afternoon.

    High: 57 °F

    Patchy Frost
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. Light southeast wind.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 69. Light south wind becoming south southwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 69 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58. South wind 6 to 9 mph, with gusts as high as 18 mph.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 81. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64. South southwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 45. Breezy, with a south southwest wind 14 to 20 mph becoming north after midnight. Winds could gust as high as 30 mph.
Friday
Showers and thunderstorms likely, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 56. North wind 14 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Friday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 32. North wind 6 to 13 mph, with gusts as high as 21 mph.
Saturday
Patchy frost before 8am. Otherwise, sunny, with a high near 57. North northeast wind around 6 mph becoming east southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 39. Light southeast wind.
Sunday
Mostly sunny, with a high near 69. Light south wind becoming south southwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 58. South wind 6 to 9 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 81. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 64. South southwest wind around 11 mph, with gusts as high as 21 mph.
Tuesday
Partly sunny, with a high near 84. South southwest wind 11 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 61. South southwest wind 11 to 14 mph, with gusts as high as 24 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. South southwest wind 14 to 17 mph, with gusts as high as 26 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. South wind 11 to 13 mph, with gusts as high as 23 mph.
Thursday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 73. South southwest wind 13 to 15 mph, with gusts as high as 24 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.55°W
Last Update:
7:12 pm CDT Mar 26, 2026
Forecast Valid:
7pm CDT Mar 26, 2026-6pm CDT Apr 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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