Janesville 7-day weather forecast

Written by:
June 8, 2026
ESOlex // Shutterstock

Janesville 7-day weather forecast

Stacker created the forecast for Janesville, Wisconsin using data from OpenWeather. This week's high is 89 °F on Wednesday, while the low is 67 °F on Saturday. There are expected to be 3 sunny days and rain on 5 days this week.

NWS Milwaukee/Sullivan WI has issued a extreme heat warning until Wednesday at 07:00 PM.

Monday, June 29

- High of 87 °F, low of 74 °F (72% humidity)
- Fair with a 47% chance of rain (0 mm of rain)
- Very high risk of harm from sun exposure (10 UV index)
- Moderate breeze (18 mph wind)
- Sunrise at 5:20 AM, sunset at 8:38 PM
- Full moon
1 / 6
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Tuesday, June 30

- High of 88 °F, low of 79 °F (65% humidity)
- Mostly sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (10 UV index)
- Moderate breeze (17 mph wind)
- Sunrise at 5:21 AM, sunset at 8:37 PM
2 / 6
Saijai Boonmak // Shutterstock

Wednesday, July 1

- High of 89 °F, low of 71 °F (65% humidity)
- Partly cloudy with a 0% chance of rain
- Very high risk of harm from sun exposure (10 UV index)
- Moderate breeze (18 mph wind)
- Sunrise at 5:21 AM, sunset at 8:37 PM
3 / 6
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Thursday, July 2

- High of 89 °F, low of 76 °F (63% humidity)
- Mostly sunny with a 60% chance of rain (1 mm of rain)
- Very high risk of harm from sun exposure (10 UV index)
- Moderate breeze (16 mph wind)
- Sunrise at 5:22 AM, sunset at 8:37 PM
4 / 6
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Friday, July 3

- High of 89 °F, low of 72 °F (65% humidity)
- Partly cloudy with a 60% chance of rain (1 mm of rain)
- Moderate breeze (14 mph wind)
- Sunrise at 5:22 AM, sunset at 8:37 PM
5 / 6
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Saturday, July 4

- High of 84 °F, low of 67 °F (72% humidity)
- Mostly cloudy with a 100% chance of rain (18 mm of rain)
- Moderate breeze (16 mph wind)
- Sunrise at 5:23 AM, sunset at 8:37 PM
6 / 6
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Sunday, July 5

- High of 82 °F, low of 69 °F (75% humidity)
- Mostly cloudy with a 100% chance of rain (3 mm of rain)
- Gentle breeze (8 mph wind)
- Sunrise at 5:24 AM, sunset at 8:36 PM

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