Janesville 7-day weather forecast

Written by:
March 9, 2026
ESOlex // Shutterstock

Janesville 7-day weather forecast

Stacker created the forecast for Janesville, Wisconsin using data from OpenWeather. This week's high is 65 °F on Saturday, while the low is -2 °F on Tuesday. There is expected to be 1 sunny day, snow on 3 days, and 1 day of rain this week.

NWS Milwaukee/Sullivan WI has issued a blizzard warning until Monday at 04:00 PM.

Monday, March 16

- High of 26 °F, low of 8 °F (92% humidity)
- Overcast with a 100% chance of snow (12 mm of snow)
- Moderate risk of harm from sun exposure (3 UV index)
- Strong breeze (27 mph wind)
- Sunrise at 7:06 AM, sunset at 7:03 PM
1 / 6
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Tuesday, March 17

- High of 16 °F, low of -2 °F (74% humidity)
- Fair with a 100% chance of snow (1 mm of snow)
- Moderate risk of harm from sun exposure (5 UV index)
- Gentle breeze (12 mph wind)
- Sunrise at 7:04 AM, sunset at 7:04 PM
2 / 6
VOJTa Herout // Shutterstock

Wednesday, March 18

- High of 32 °F, low of 16 °F (93% humidity)
- Overcast with a 100% chance of snow (2 mm of snow)
- Moderate risk of harm from sun exposure (4 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 7:02 AM, sunset at 7:05 PM
- New moon
3 / 6
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Thursday, March 19

- High of 34 °F, low of 22 °F (100% humidity)
- Partly sunny with a 20% chance of rain (0 mm of rain)
- Moderate risk of harm from sun exposure (4 UV index)
- Light breeze (7 mph wind)
- Sunrise at 7:01 AM, sunset at 7:06 PM
4 / 6
Gary Whitton // Shutterstock

Friday, March 20

- High of 38 °F, low of 33 °F (100% humidity)
- Overcast with a 0% chance of rain
- Moderate risk of harm from sun exposure (4 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 6:59 AM, sunset at 7:07 PM
5 / 6
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Saturday, March 21

- High of 65 °F, low of 34 °F (80% humidity)
- Overcast with a 0% chance of rain
- Moderate risk of harm from sun exposure (4 UV index)
- Moderate breeze (15 mph wind)
- Sunrise at 6:57 AM, sunset at 7:08 PM
6 / 6
Onishchenko Natalya // Shutterstock

Sunday, March 22

- High of 46 °F, low of 31 °F (39% humidity)
- Partly cloudy with a 0% chance of rain
- Moderate risk of harm from sun exposure (4 UV index)
- Fresh breeze (24 mph wind)
- Sunrise at 6:55 AM, sunset at 7:09 PM

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