Current conditions at
Harrisburg-Raleigh Airport (KHSB)
Lat: 37.81°NLon: 88.54°WElev: 387ft.
Fair
21°F
-6°C
| Humidity | 85% |
| Wind Speed | Calm |
| Barometer | 30.48 in |
| Dewpoint | 18°F (-8°C) |
| Visibility | 10.00 mi |
| Last update | 11 Jan 11:55 pm CST |
Extended Forecast for
Harrisburg IL
Overnight

Low: 23 °F
Clear
Monday

High: 50 °F
Sunny
Monday Night

Low: 34 °F
Partly Cloudy
Tuesday

High: 57 °F
Mostly Sunny
Tuesday Night

Low: 41 °F
Chance
ShowersWednesday
High: 46 °F
Slight Chance
Showers then
Mostly CloudyWednesday Night

Low: 19 °F
Mostly Cloudy
Thursday

High: 33 °F
Mostly Sunny
Thursday Night

Low: 24 °F
Partly Cloudy
Detailed Forecast
Overnight
Clear, with a low around 23. Calm wind becoming south southwest around 6 mph.
Monday
Sunny, with a high near 50. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 34. South southwest wind 6 to 8 mph.
Tuesday
Mostly sunny, with a high near 57. Southwest wind 9 to 14 mph, with gusts as high as 23 mph.
Tuesday Night
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 41. West southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday
A 20 percent chance of showers before noon. Mostly cloudy, with a high near 46. Northwest wind 7 to 16 mph, with gusts as high as 26 mph.
Wednesday Night
Mostly cloudy, with a low around 19. North northwest wind 13 to 16 mph, with gusts as high as 26 mph.
Thursday
Mostly sunny, with a high near 33. North northwest wind 5 to 11 mph, with gusts as high as 22 mph.
Thursday Night
Partly cloudy, with a low around 24. South southwest wind 3 to 8 mph.
Friday
Partly sunny, with a high near 43. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 25. West wind 5 to 7 mph.
Saturday
Mostly cloudy, with a high near 35. West northwest wind 7 to 11 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 18. West northwest wind around 6 mph.
Sunday
Mostly sunny, with a high near 32. West wind 6 to 11 mph, with gusts as high as 18 mph.
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ABOUT THIS FORECAST
Point Forecast:
Harrisburg IL
37.74°N 88.58°W
37.74°N 88.58°W
11:07 pm CST Jan 11, 2026
12am CST Jan 12, 2026-6pm CST Jan 18, 2026


