Weather forecast for tomorrowJanesville, WI

Weather forecast for tomorrow

Wednesday Oct 21, 2026

  • 72°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 6mphSW 217°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 7:16 am CDT
  • Sunset: 6:04 pm CDT
  • ▼
Tomorrow, in Janesville, mainly sunny conditions will dominate the day.
The maximum temperature will be a delightful 71.6°F, while the minimum expected temperature is a chilly 46.4°F.
Weather conditions lean warmer, with the temperature tracking September's average high of 72.1°F.
Sunrise will be at 7:16 am and sunset at 6:04 pm; tomorrow's daylight will last for 10h and 48min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 72°C.
Coldest hour: 6 am 41°C.

Chance of precipitation

Highest chance: 12 am - 3 am 8%.

Hourly weather forecast

  • 12 am
  • 46°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 2mphSSE 152°
  • Humidity: 85%
  • Pressure: 30.3"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
  • 2 am
  • 45°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 1mphSSE 168°
  • Humidity: 88%
  • Pressure: 30.3"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
  • 4 am
  • 41°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 1mphSSE 168°
  • Humidity: 93%
  • Pressure: 30.27"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
  • 6 am
  • 41°F
  • Feels like:
    41°F
Mostly Clear
Mostly Clear
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 1mphS 179°
  • Humidity: 93%
  • Pressure: 30.3"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
Sunrise: 7:16 am
  • 8 am
  • 43°F
  • Feels like:
    43°F
Sunny
Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 2mphS 188°
  • Humidity: 90%
  • Pressure: 30.3"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
  • 10 am
  • 55°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 4mphSSW 209°
  • Humidity: 65%
  • Pressure: 30.27"Hg
  • Visibility: 9mi
  • UV index: 2
  • ▼
  • 12 pm
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphSSW 213°
  • Humidity: 44%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 70°F
  • Feels like:
    70°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSW 233°
  • Humidity: 40%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 70°F
  • Feels like:
    70°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSW 235°
  • Humidity: 40%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 64°F
  • Feels like:
    64°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphWSW 240°
  • Humidity: 50%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:04 pm
  • 8 pm
  • 59°F
  • Feels like:
    59°F
Mostly Clear
Mostly Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 2mphSW 228°
  • Humidity: 64%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 55°F
  • Feels like:
    55°F
Mostly Clear
Mostly Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 1mphW 261°
  • Humidity: 70%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, primarily sun-filled and occasionally overcast weather is forecasted.
The temperature will be between a minimum of 41°F and a maximum of 71.6°F. The warmest part of the day will be around 3 pm.
The maximum temperature will align more closely with September's average high of 72.1°F than with October's 58.6°F. The nighttime low will be moderately higher than the typical October minimum temperature of 42.6°F.
Updated: Oct 20, 2026 @ 05:07:32 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, open skies and radiant sunshine are expected.

Tomorrow, the highest temperature will be 71.6°F, while the lowest temperature will be 46.4°F.
The highest temperature will be significantly higher than the average maximum of 58.6°F in October. The lowest temperature will be relatively higher than the average low of 42.6°F.

On Wednesday, in Janesville, sunrise will be at 7:16 am and sunset at 6:04 pm (CDT).

In Janesville, tomorrow, there will be 10h and 48min of daylight.