❮
Today Hourly 7 days 30 days December
❯

December 2026 Weather | Janesville, Wisconsin

Tue 12/1
Icy Road Conditions
Day 43°
Night 30°
65
Wed 12/2
Cloudy Weather
Day 43°
Night 30°
12
Thu 12/3
Cloudy Weather
Day 43°
Night 28°
2
Fri 12/4
Cloudy Weather
Day 45°
Night 28°
0
Sat 12/5
Snowy Weather
Day 43°
Night 28°
55
Sun 12/6
Cloudy Weather
Day 36°
Night 25°
96
Mon 12/7
Cloudy Weather
Day 34°
Night 19°
0
Tue 12/8
Cloudy Weather
Day 28°
Night 18°
65
Wed 12/9
Sunny Weather
Day 30°
Night 21°
100
Thu 12/10
Cloudy Weather
Day 37°
Night 27°
55
Fri 12/11
Cloudy Weather
Day 37°
Night 27°
7
Sat 12/12
Cloudy Weather
Day 39°
Night 27°
55
Sun 12/13
Cloudy Weather
Day 36°
Night 27°
0
Mon 12/14
Cloudy Weather
Day 30°
Night 23°
Tue 12/15
Cloudy Weather
Day 34°
Night 21°
0
Wed 12/16
Cloudy Weather
Day 36°
Night 25°
25
Thu 12/17
Cloudy Weather
Day 37°
Night 25°
Fri 12/18
Snowy Weather
Day 34°
Night 21°
Sat 12/19
Snowy Weather
Day 36°
Night 19°
Sun 12/20
Snowy Weather
Day 30°
Night 12°
0
Mon 12/21
Snowy Weather
Day 32°
Night 16°
23
Tue 12/22
Cloudy Weather
Day 27°
Night 18°
2
Wed 12/23
Snowy Weather
Day 34°
Night 21°
0
Thu 12/24
Cloudy Weather
Day 32°
Night 19°
25
Fri 12/25
Snowy Weather
Day 36°
Night 10°
84
Sat 12/26
Cloudy Weather
Day 32°
Night 10°
0
Sun 12/27
Cloudy Weather
Day 25°
Night 9°
49
Mon 12/28
Cloudy Weather
Day 27°
Night 9°
95
Tue 12/29
Cloudy Weather
Day 27°
Night 14°
55
Wed 12/30
Cloudy Weather
Day 25°
Night 18°
Thu 12/31
Cloudy Weather
Day 27°
Night 10°

Explore U.S. Weather Trends

❄️ Coldest Cities in the U.S. – Live Temperature Rankings 🔥 Hottest Cities Today – Real-Time Heat Observations ⚠️ Active Weather Alerts – Warnings, Watches & Advisories 🌪️ Windiest Cities – Highest Sustained Wind Speeds 🌫️ Worst Air Quality – Cities with the Highest AQI 🍃 Best Air Quality – Cities with the Lowest AQI