Janesville climate

Typical historical weather for Janesville, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.

Want today's actual conditions instead? See the current forecast for Janesville.

Annual average

8.7°C

across all months

Warmest month

27.9°C

Jul average high

Coolest month

-12°C

Jan average low

Annual rainfall

996mm

total per year

Monthly averages

Average daily high/low temperature (band) and monthly rainfall (bars).

● Avg high● Avg low▮ Rainfall

Records on file

Hottest day

36.1°C

4 September 2023

Coldest day

-36.5°C

31 January 2019

Wettest day

94.1mm

27 August 2021

Windiest day

14.6m/s

24 February 2019