Weather in Janesville in May
How warm is it in Janesville in May?
In May the typical daytime high in Janesville is 22.0 °C on average, from 18.7 °C at the start to 25.3 °C at the end of the month.
That is 6.7 °C warmer than in April and 5.3 °C cooler than in June.
The last 10 years were 1.1 °C warmer than more than 40 years ago.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
The average of the weather stations Rock Is L&D (182 km), Green Bay (215 km) and Cedar Rapids (223 km); nearer ones count more.