Current conditions at
Harrisburg-Raleigh Airport (KHSB)
Lat: 37.81°NLon: 88.54°WElev: 387ft.
Overcast
31°F
-1°C
| Humidity | 79% |
| Wind Speed | SW 6 mph |
| Barometer | 30.20 in |
| Dewpoint | 26°F (-3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 25°F (-4°C) |
| Last update | 3 Dec 7:15 pm CST |
Extended Forecast for
Harrisburg IL
Tonight
Low: 27 °F
Mostly Cloudy
then Slight
Chance Wintry
MixThursday

High: 30 °F
Decreasing
CloudsThursday Night

Low: 20 °F
Mostly Cloudy
Friday

High: 40 °F
Decreasing
CloudsFriday Night

Low: 26 °F
Partly Cloudy
Saturday

High: 45 °F
Partly Sunny
Saturday Night
Low: 28 °F
Mostly Cloudy
then Slight
Chance
Freezing RainSunday
High: 40 °F
Slight Chance
Showers then
Partly SunnySunday Night

Low: 20 °F
Mostly Cloudy
Detailed Forecast
Tonight
A slight chance of snow showers and freezing rain before 4am, then a slight chance of snow showers between 4am and 5am. Cloudy, with a steady temperature around 27. Calm wind becoming north 5 to 9 mph after midnight. Chance of precipitation is 20%.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 30. North northeast wind 6 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 20. Calm wind.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 40. Light and variable wind.
Friday Night
Partly cloudy, with a low around 26. Calm wind.
Saturday
Partly sunny, with a high near 45. Calm wind becoming southwest around 5 mph.
Saturday Night
A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 28. Light northeast wind. Chance of precipitation is 20%.
Sunday
A slight chance of showers before noon. Partly sunny, with a high near 40. North wind 5 to 8 mph.
Sunday Night
Mostly cloudy, with a low around 20. North wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 36. Light and variable wind becoming north around 5 mph.
Monday Night
Partly cloudy, with a low around 24. Calm wind becoming south southwest 5 to 7 mph after midnight.
Tuesday
Mostly sunny, with a high near 45. Southwest wind 7 to 11 mph.
Tuesday Night
Mostly cloudy, with a low around 34. South southwest wind 7 to 10 mph.
Wednesday
A slight chance of showers. Partly sunny, with a high near 51. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.
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ABOUT THIS FORECAST
Point Forecast:
Harrisburg IL
37.74°N 88.58°W
37.74°N 88.58°W
4:41 pm CST Dec 3, 2025
7pm CST Dec 3, 2025-6pm CST Dec 10, 2025


