Sunday
Mostly sunny
High:
61°F
Mostly sunny, with a high near 61. Light north wind becoming northwest 10 to 15 mph in the morning.
Janesville, WI Weather - Tomorrow’s Forecast
Sunday Night
Mostly clear
Overnight low:
37°F
Areas of frost after 4am. Otherwise, mostly clear, with a low around 37. Northwest wind 5 to 10 mph becoming light and variable in the evening.