Janesville 7-day weather forecast

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December 29, 2025
ESOlex // Shutterstock

Janesville 7-day weather forecast

Stacker created the forecast for Janesville, Wisconsin using data from OpenWeather. This week's high is 36 °F on Sunday, while the low is 9 °F on Thursday. There are expected to be 0 sunny days and snow on 3 days this week.

NWS Milwaukee/Sullivan WI has issued a wind advisory until Monday at 12:00 PM and a winter weather advisory until Tuesday at 06:00 PM.

Monday, December 29

- High of 19 °F, low of 12 °F (72% humidity)
- Overcast with a 100% chance of snow (3 mm of snow)
- Strong breeze (26 mph wind)
- Sunrise at 7:25 AM, sunset at 4:30 PM
1 / 6
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Tuesday, December 30

- High of 29 °F, low of 11 °F (55% humidity)
- Partly sunny with a 26% chance of snow (0 mm of snow)
- Moderate breeze (16 mph wind)
- Sunrise at 7:26 AM, sunset at 4:31 PM
2 / 6
Kristi Blokhin // Shutterstock

Wednesday, December 31

- High of 29 °F, low of 12 °F (66% humidity)
- Overcast with a 65% chance of snow (0 mm of snow)
- Moderate breeze (17 mph wind)
- Sunrise at 7:26 AM, sunset at 4:31 PM
3 / 6
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Thursday, January 1

- High of 16 °F, low of 9 °F (45% humidity)
- Overcast with a 0% chance of snow
- Gentle breeze (10 mph wind)
- Sunrise at 7:26 AM, sunset at 4:32 PM
4 / 6
Saijai Boonmak // Shutterstock

Friday, January 2

- High of 21 °F, low of 10 °F (61% humidity)
- Partly sunny with a 0% chance of snow
- Light breeze (7 mph wind)
- Sunrise at 7:26 AM, sunset at 4:33 PM
5 / 6
VOJTa Herout // Shutterstock

Saturday, January 3

- High of 27 °F, low of 18 °F (52% humidity)
- Overcast with a 0% chance of snow
- Light breeze (5 mph wind)
- Sunrise at 7:26 AM, sunset at 4:34 PM
- Full moon
6 / 6
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Sunday, January 4

- High of 36 °F, low of 21 °F (65% humidity)
- Mostly cloudy with a 0% chance of rain
- Moderate breeze (13 mph wind)
- Sunrise at 7:26 AM, sunset at 4:35 PM

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