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.

Fog/Mist

36°F

2°C

Humidity 90%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 33°F (1°C)
Visibility 5.00 mi
Last update 7 Dec 1:35 am CST
Extended Forecast for

Harrisburg IL

  • Overnight

    Overnight: Patchy fog between 3am and 4am. Otherwise, mostly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Patchy Fog

  • Sunday

    Sunday: A slight chance of showers before 8am, then a slight chance of drizzle after 8am. Mostly cloudy, with a high near 46. Calm wind becoming north 5 to 9 mph in the afternoon. Chance of precipitation is 20%.

    High: 46 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Cloudy, with a low around 27. North wind 7 to 9 mph.

    Low: 27 °F

    Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 37. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 37 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 25. Calm wind becoming south southwest 5 to 9 mph after midnight.

    Low: 25 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 48. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 48 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. South southwest wind 14 to 17 mph, with gusts as high as 29 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 51. Southwest wind 8 to 16 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain showers before midnight, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 29. West northwest wind around 6 mph becoming calm.

    Low: 29 °F

    Slight Chance
    Showers then
    Slight Chance
    Rain/Snow

Detailed Forecast

Overnight
Patchy fog between 3am and 4am. Otherwise, mostly cloudy, with a low around 34. Calm wind.
Sunday
A slight chance of showers before 8am, then a slight chance of drizzle after 8am. Mostly cloudy, with a high near 46. Calm wind becoming north 5 to 9 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
Cloudy, with a low around 27. North wind 7 to 9 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 37. North wind 5 to 7 mph becoming calm in the afternoon.
Monday Night
Mostly clear, with a low around 25. Calm wind becoming south southwest 5 to 9 mph after midnight.
Tuesday
Mostly sunny, with a high near 48. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 41. South southwest wind 14 to 17 mph, with gusts as high as 29 mph.
Wednesday
Partly sunny, with a high near 51. Southwest wind 8 to 16 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.
Wednesday Night
A slight chance of rain showers before midnight, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 29. West northwest wind around 6 mph becoming calm.
Thursday
A chance of rain and snow showers before noon, then a chance of rain showers. Mostly cloudy, with a high near 40. East wind 5 to 7 mph becoming north in the afternoon.
Thursday Night
A slight chance of showers. Mostly cloudy, with a low around 21. North northwest wind 6 to 8 mph.
Friday
Partly sunny, with a high near 30. Northwest wind 9 to 11 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 9. Northwest wind around 8 mph.
Saturday
Partly sunny, with a high near 24. West northwest wind 6 to 9 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:
1:16 am CST Dec 7, 2025
Forecast Valid:
1am CST Dec 7, 2025-6pm CST Dec 13, 2025
 
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