Harrisburg, IL Weather Forecast and Current Conditions
Current Conditions From Nearby Station
Feels Like 25°F
at
Point Forecast at a Glance
7-Day Temperature Trend
Week Ahead Summary
Warming trend through the week with high temperatures climbing from 32°F to 50°F. Some precipitation possible with wintry mix on at least one day.
Climate Context
This week's forecast shows temperatures running 4°F below the historical average for December. Normal highs for this period are around 45°F with lows around 27°F.
This Date in Weather History
1972 - Winds gusting to 70 mph sent the temperature at Livingston, MT, plunging from 52 degrees to 18 degrees in just twenty minutes.
Harrisburg, IL 7 Day Weather Forecast Details
Thursday Dec 4
Day: Mostly cloudy, with a high near 32. North wind 5 to 10 mph becoming light in the afternoon.
Night: Mostly cloudy, with a low around 19. Calm wind.
Friday Dec 5
Day: Sunny, with a high near 41. Calm wind becoming south southwest around 5 mph.
Night: Partly cloudy, with a low around 26. Light southwest wind.
Saturday Dec 6
Day: Mostly sunny, with a high near 44. Light and variable wind.
Night: A slight chance of rain showers between midnight and 3am, then a slight chance of freezing rain after 3am. Mostly cloudy, with a low around 28. Light east northeast wind. Chance of precipitation is 20%.
Sunday Dec 7
Day: A 20 percent chance of showers before noon. Mostly cloudy, with a high near 40. North wind 5 to 8 mph.
Night: Mostly cloudy, with a low around 22. North wind 5 to 7 mph.
Monday Dec 8
Day: Mostly sunny, with a high near 36. North wind around 5 mph becoming calm in the afternoon.
Night: Partly cloudy, with a low around 22. Calm wind becoming south southwest around 6 mph after midnight.
Tuesday Dec 9
Day: Mostly sunny, with a high near 45. Southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Night: Mostly cloudy, with a low around 32. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Wednesday Dec 10
Day: A chance of showers. Mostly cloudy, with a high near 50. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.
About Harrisburg, IL
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Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.
Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.