Janesville 7-day weather forecast

Written by:
September 8, 2025
ESOlex // Shutterstock

Janesville 7-day weather forecast

Stacker created the forecast for Janesville, Wisconsin using data from OpenWeather. This week's high is 84 °F on Thursday, while the low is 59 °F on Friday. There are expected to be 3 sunny days and rain on 2 days this week.

There are currently no weather alerts.

Monday, September 15

- High of 82 °F, low of 63 °F (55% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 6:36 AM, sunset at 7:06 PM
1 / 6
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Tuesday, September 16

- High of 82 °F, low of 60 °F (56% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 6:37 AM, sunset at 7:04 PM
2 / 6
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Wednesday, September 17

- High of 82 °F, low of 60 °F (45% humidity)
- Mostly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Light breeze (5 mph wind)
- Sunrise at 6:38 AM, sunset at 7:02 PM
3 / 6
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Thursday, September 18

- High of 84 °F, low of 60 °F (46% humidity)
- Fair with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 6:39 AM, sunset at 7:01 PM
4 / 6
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Friday, September 19

- High of 80 °F, low of 59 °F (52% humidity)
- Overcast with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 6:40 AM, sunset at 6:59 PM
5 / 6
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Saturday, September 20

- High of 65 °F, low of 61 °F (86% humidity)
- Overcast with a 100% chance of rain (2 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 6:41 AM, sunset at 6:57 PM
6 / 6
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Sunday, September 21

- High of 68 °F, low of 62 °F (92% humidity)
- Overcast with a 100% chance of rain (8 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (12 mph wind)
- Sunrise at 6:42 AM, sunset at 6:55 PM
- New moon

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