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 97 °F on Monday, while the low is 59 °F on Wednesday. There are expected to be 3 sunny days and rain on 4 days this week.

NWS Milwaukee/Sullivan WI has issued a special weather statement until Monday at 07:00 AM and a heat advisory until Tuesday at 09:00 PM.

Monday, July 27

- High of 97 °F, low of 77 °F (65% humidity)
- Fair with a 100% chance of rain (2 mm of rain)
- Very high risk of harm from sun exposure (10 UV index)
- Moderate breeze (17 mph wind)
- Sunrise at 5:42 AM, sunset at 8:22 PM
1 / 6
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Tuesday, July 28

- High of 86 °F, low of 62 °F (53% humidity)
- Partly cloudy with a 0% chance of rain
- Very high risk of harm from sun exposure (8 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 5:43 AM, sunset at 8:21 PM
2 / 6
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Wednesday, July 29

- High of 84 °F, low of 59 °F (51% humidity)
- Fair with a 0% chance of rain
- Very high risk of harm from sun exposure (8 UV index)
- Light breeze (7 mph wind)
- Sunrise at 5:44 AM, sunset at 8:20 PM
- Full moon
3 / 6
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Thursday, July 30

- High of 84 °F, low of 65 °F (50% humidity)
- Mostly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 5:45 AM, sunset at 8:19 PM
4 / 6
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Friday, July 31

- High of 71 °F, low of 66 °F (97% humidity)
- Overcast with a 100% chance of rain (21 mm of rain)
- Gentle breeze (12 mph wind)
- Sunrise at 5:46 AM, sunset at 8:18 PM
5 / 6
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Saturday, August 1

- High of 74 °F, low of 65 °F (82% humidity)
- Mostly cloudy with a 100% chance of rain (5 mm of rain)
- Gentle breeze (10 mph wind)
- Sunrise at 5:47 AM, sunset at 8:16 PM
6 / 6
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Sunday, August 2

- High of 83 °F, low of 65 °F (63% humidity)
- Sunny with a 47% chance of rain (0 mm of rain)
- Light breeze (7 mph wind)
- Sunrise at 5:48 AM, sunset at 8:15 PM

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