Weather in Janesville in August
How warm is it in Janesville in August?
In August the typical daytime high in Janesville is 27.9 °C on average, from 28.7 °C at the start to 27.1 °C at the end of the month.
That is 1.1 °C cooler than in July and 3.3 °C warmer than in September.
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.