Janesville, Wisconsin Weather
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Click for Hazardous Weather Outlook for Janesville, Wisconsin
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Weather Forecast for Janesville, Wisconsin : Rock County
Issued: 9:09 am CDT Sep 8, 2025 Latitude: 42.6827885 Longitude: -89.0187223 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
Mostly Sunny on Today Cloudy on Tonight Mostly Sunny on Tuesday Mostly Sunny on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday 20% chance of thunderstorms on Saturday Mostly Sunny on Sunday
High: 69°F Low: 50°F High: 74°F High: 76°F High: 79°F High: 80°F High: 83°F High: 80°F
Low: 53°F Low: 56°F Low: 55°F Low: 61°F Low: 60°F  
Mostly Sunny Cloudy Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny Thunderstorms Mostly Sunny
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Current Conditions at
JANESVILLE - (KJVL)
63°
Clear
as of 9:45 AM CDST
Rel. Humidity: 59%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 30.29 in.
Flight Rule: VFR
Wind Data
9 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
MONROE - (KEFT)
63°
Clear
as of 10:15 AM CDST
Rel. Humidity: 51%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 30.27 in.
Flight Rule: VFR
Wind Data
16 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
ROCKFORD - (KRFD)
63°
Clear
as of 9:54 AM CDST
Rel. Humidity: 59%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 30.31 in.
Flight Rule: VFR
Wind Data
8 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
MADISON - (KMSN)
61°
Partly Cloudy
as of 9:53 AM CDST
Rel. Humidity: 59%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.27 in.
Flight Rule: VFR
Wind Data
8 MPH
190° South
Cloud Level(s): Scattered at 6000ft
Mostly Sunny on Today Today... Mostly sunny, with a high near 69. South wind 5 to 10 mph.
Cloudy on Tonight Tonight... Partly cloudy, with a low around 50. South wind 5 to 10 mph.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 74. South wind 5 to 10 mph.
20% chance of rain Tuesday Night Tuesday Night... A 20 percent chance of showers. Mostly cloudy, with a low around 53. South wind around 5 mph becoming calm in the evening.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 76. Calm wind becoming southwest around 5 mph in the afternoon.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 56. Northeast wind around 5 mph becoming calm.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 79. Calm wind becoming east around 5 mph in the morning.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 55. East wind around 5 mph becoming calm in the evening.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 80.
20% chance of rain Friday Night Friday Night... A 20 percent chance of showers after 1am. Partly cloudy, with a low around 61.
20% chance of thunderstorms Saturday Saturday... A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
20% chance of thunderstorms Saturday Night Saturday Night... A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 80.
Current Radar Image


Sun Almanac for Janesville, Wisconsin
Sunrise: 06:29 AM
Sunset: 7:18 PM
Civil Sunrise:06:00 AM
Civil Sunset: 7:47 PM
Nautical Sunrise: 05:26 AM
Nautical Sunset: 8:21 PM
Astro Sunrise: 04:51 AM
Astro Sunset: 8:56 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.