Janesville, WI Weather - Extended Forecast

Friday

Chance of showers and thunderstorms

High:
54°F

A 20 percent chance of showers before 1pm. Partly sunny, with a high near 54. Windy, with a northwest wind 20 to 25 mph, with gusts as high as 35 mph.

Friday Night

Mostly clear

Overnight low:
32°F

Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 32. North wind 5 to 10 mph becoming light northwest after midnight.

Saturday

Frost

High:
57°F

Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 57. Light west wind becoming southwest 5 to 10 mph in the afternoon.

Saturday Night

Clear

Overnight low:
39°F

Clear, with a low around 39. Southwest wind around 10 mph.

Sunday

Sunny

High:
63°F

Sunday Night

Partly cloudy

Overnight low:
45°F

Monday

Partly sunny

High:
65°F

Monday Night

Partly cloudy

Overnight low:
44°F

Tuesday

Mostly sunny

High:
69°F