What is today's weather forecast for Janesville, IL?

Today's forecast for Janesville shows a low of 10 degrees Fahrenheit. Mostly cloudy, with a low around 10.

What is the 7-day weather forecast for Janesville, IL?

The 7-day forecast for Janesville shows highs from 19 to 39 degrees and lows from 7 to 27 degrees Fahrenheit. Expect precipitation on 1 day with chances of 20% or higher.

Will it rain in Janesville, IL this week?

Yes, rain is possible in Janesville this week. Precipitation chances: Wednesday (50% chance).

How accurate is the Janesville weather forecast?

WeatherForYou provides highly accurate Janesville forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Janesville, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Station

Switch to Metric Units

24°F
Feels Like 11°F

Humidity 77% Dew Point 18°F Wind NNW 16 MPH Gusts 30 Barometer 30.27 in.

Visibility 10 mi.

Report from a NOAA weather station 6.5 mi. N of central Janesville
at 2:53 AM Thu, Dec 4, 2025

Point Forecast at a Glance

WedDec 3

ThuDec 4

FriDec 5

SatDec 6

SunDec 7

MonDec 8

TueDec 9

7-Day Temperature Trend

Week Ahead Summary

Warming trend through the week with high temperatures climbing from 19°F to 36°F. Dry weather expected throughout the week.

Climate Context

This week's forecast shows temperatures running 11°F below the historical average for December. Normal highs for this period are around 41°F with lows around 25°F.

This Date in Weather History

1786 - The first of two great early December storms began. The storm produced 18 inches of snow at Morristown NJ, and twenty inches of snow at New Haven CT. It also resulted in high tides at Nantucket which did great damage.

Janesville, IL 7 Day Weather Forecast Details

Wednesday Dec 3

Night: Mostly cloudy, with a low around 10. North wind 11 to 13 mph, with gusts as high as 22 mph.

Thursday Dec 4

Day: Mostly sunny, with a high near 19. Wind chill values between -4 and 6. North northeast wind 6 to 11 mph, with gusts as high as 20 mph.

Night: Partly cloudy, with a low around 7. Wind chill values between -2 and 3. North northeast wind around 5 mph becoming calm in the evening.

Friday Dec 5

Day: Mostly sunny, with a high near 31. Calm wind becoming south 5 to 7 mph in the morning.

Night: Mostly cloudy, with a low around 23. South wind around 7 mph becoming west southwest after midnight.

Saturday Dec 6

Day: Mostly cloudy, with a high near 32. West southwest wind around 6 mph becoming light and variable in the afternoon.

Night: Mostly cloudy, with a low around 21. Northeast wind 3 to 7 mph.

Sunday Dec 7

Day: Mostly cloudy, with a high near 29.

Night: Mostly cloudy, with a low around 12.

Monday Dec 8

Day: Mostly sunny, with a high near 26.

Night: Mostly cloudy, with a low around 16.

Tuesday Dec 9

Day: Partly sunny, with a high near 36.

Night: Mostly cloudy, with a low around 27.

Wednesday Dec 10

Day: A chance of rain. Mostly cloudy, with a high near 39.

About Janesville, IL

Janesville is a Census-designated place in Coles and Cumberland counties, Illinois, United States. Janesville is 7 miles (11 km) north of Toledo. Janesville has a post office with the ZIP Code 62435.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

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.

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