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.

Light Drizzle

45°F

7°C

Humidity 93%
Wind Speed NE 5 mph
Barometer 29.85 in
Dewpoint 43°F (6°C)
Visibility 7.00 mi
Wind Chill42°F (6°C)
Last update 15 Feb 1:55 am CST
Extended Forecast for

Harrisburg IL

  • Overnight

    Overnight: Rain. Low around 45. Northeast wind around 6 mph. Chance of precipitation is 90%.

    Low: 45 °F

    Rain

  • Sunday

    Sunday: Rain, mainly before 9am. High near 55. North northeast wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%.

    High: 55 °F

    Rain then
    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35. North wind around 6 mph becoming calm in the evening.

    Low: 35 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 62. Calm wind becoming south around 6 mph in the afternoon.

    High: 62 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 42. Light south wind.

    Low: 42 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 64. South wind 5 to 14 mph, with gusts as high as 23 mph.

    High: 64 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 59. Breezy, with a south southwest wind 14 to 21 mph, with gusts as high as 33 mph.

    Low: 59 °F

    Mostly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. West southwest wind 9 to 18 mph, with gusts as high as 31 mph.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49. Southwest wind 5 to 7 mph.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Overnight
Rain. Low around 45. Northeast wind around 6 mph. Chance of precipitation is 90%.
Sunday
Rain, mainly before 9am. High near 55. North northeast wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%.
Sunday Night
Mostly clear, with a low around 35. North wind around 6 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 62. Calm wind becoming south around 6 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 42. Light south wind.
Tuesday
Mostly cloudy, with a high near 64. South wind 5 to 14 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 59. Breezy, with a south southwest wind 14 to 21 mph, with gusts as high as 33 mph.
Wednesday
Mostly sunny, with a high near 72. West southwest wind 9 to 18 mph, with gusts as high as 31 mph.
Wednesday Night
Partly cloudy, with a low around 49. Southwest wind 5 to 7 mph.
Thursday
A chance of showers after noon. Mostly sunny, with a high near 72. South southwest wind 5 to 13 mph, with gusts as high as 23 mph.
Thursday Night
A chance of showers. Partly cloudy, with a low around 46. West wind 8 to 11 mph, with gusts as high as 20 mph.
Friday
A slight chance of showers. Mostly sunny, with a high near 57. West wind 8 to 11 mph, with gusts as high as 18 mph.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 33. West northwest wind around 7 mph.
Saturday
Mostly sunny, with a high near 51. West northwest wind 6 to 8 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:
1:57 am CST Feb 15, 2026
Forecast Valid:
2am CST Feb 15, 2026-6pm CST Feb 21, 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