Current conditions at
Harrisburg-Raleigh Airport (KHSB)
Lat: 37.81°NLon: 88.54°WElev: 387ft.
Overcast
44°F
7°C
| Humidity | 80% |
| Wind Speed | NW 13 G 20 mph |
| Barometer | 30.08 in |
| Dewpoint | 38°F (3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 38°F (3°C) |
| Last update | 10 Jan 11:55 am CST |
Extended Forecast for
Harrisburg IL
This Afternoon

High: 48 °F
Gradual
ClearingTonight
Low: 26 °F
Slight Chance
Showers then
Slight Chance
Sprinkles/SnowSunday

High: 39 °F
Sunny
Sunday Night

Low: 24 °F
Mostly Clear
Monday

High: 49 °F
Sunny
Monday Night

Low: 35 °F
Mostly Clear
Tuesday

High: 57 °F
Mostly Sunny
Tuesday Night

Low: 40 °F
Mostly Cloudy
Wednesday
High: 47 °F
Mostly Cloudy
then Slight
Chance
Showers
Detailed Forecast
This Afternoon
Cloudy early, then gradual clearing, with a high near 48. Northwest wind 6 to 16 mph, with gusts as high as 26 mph.
Tonight
A slight chance of rain and snow showers before 2am, then a slight chance of sprinkles and flurries between 2am and 3am, then a slight chance of flurries after 3am. Increasing clouds, with a low around 26. Southwest wind 5 to 10 mph increasing to 12 to 17 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 39. Northwest wind 5 to 14 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 24. Calm wind becoming south southwest around 5 mph after midnight.
Monday
Sunny, with a high near 49. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 35. South southwest wind 6 to 9 mph, with gusts as high as 18 mph.
Tuesday
Mostly sunny, with a high near 57. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 40. West southwest wind 6 to 10 mph.
Wednesday
A slight chance of showers after noon. Mostly cloudy, with a high near 47. Northwest wind 6 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 22. North wind 6 to 8 mph.
Thursday
Mostly sunny, with a high near 37. North northwest wind 5 to 8 mph becoming light and variable in the afternoon.
Thursday Night
Mostly cloudy, with a low around 25. South southwest wind 3 to 7 mph.
Friday
Partly sunny, with a high near 46. West southwest wind 7 to 11 mph, with gusts as high as 18 mph.
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ABOUT THIS FORECAST
Point Forecast:
Harrisburg IL
37.74°N 88.55°W
37.74°N 88.55°W
11:51 am CST Jan 10, 2026
12pm CST Jan 10, 2026-6pm CST Jan 16, 2026


