Hazardous Weather Conditions
Current conditions at
Janesville-Rock County (KJVL)
Lat: 42.62°NLon: 89.04°WElev: 801ft.
Overcast
34°F
1°C
| Humidity | 81% |
| Wind Speed | E 15 G 21 mph |
| Barometer | 29.88 in |
| Dewpoint | 28°F (-2°C) |
| Visibility | 10.00 mi |
| Wind Chill | 24°F (-4°C) |
| Last update | 15 Mar 12:35 am CDT |
Extended Forecast for
Janesville WI
Winter Storm Warning March 15, 07:00pm until March 16, 04:00pm
Overnight

Low: 32 °F
Chance Rain
Sunday

High: 53 °F
Rain
Sunday Night
Low: 17 °F
Wintry Mix
and Patchy
Blowing SnowMonday

High: 21 °F
Snow Likely
and Areas
Blowing SnowMonday Night

Low: 5 °F
Decreasing
CloudsTuesday

High: 24 °F
Mostly Sunny
Tuesday Night

Low: 15 °F
Snow
Wednesday

High: 42 °F
Decreasing
CloudsWednesday Night

Low: 30 °F
Mostly Cloudy
Detailed Forecast
Overnight
A 30 percent chance of rain. Cloudy, with a low around 32. East wind around 15 mph, with gusts as high as 35 mph.
Sunday
Rain and thunderstorms before 1pm, then rain between 1pm and 4pm, then rain and possibly a thunderstorm after 4pm. High near 53. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Sunday Night
Rain, snow, and sleet before 9pm, then snow and sleet between 9pm and 10pm, then snow after 10pm. Some thunder is also possible. Patchy blowing snow after 10pm. Low around 17. Windy, with a north wind 20 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 3 inches possible.
Monday
Snow likely, mainly before 1pm. Areas of blowing snow. Cloudy, with a high near 21. Wind chill values between zero and 5. Windy, with a northwest wind 20 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 5. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 24. Northwest wind 5 to 10 mph becoming southwest in the afternoon.
Tuesday Night
Snow. Low around 15. South wind 5 to 10 mph. Chance of precipitation is 80%.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 42. Southwest wind 5 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 30.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Mostly cloudy, with a low around 33.
Friday
Partly sunny, with a high near 55.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 57.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Janesville WI
42.67°N 89.04°W (Elev. 774 ft)
42.67°N 89.04°W (Elev. 774 ft)
12:22 am CDT Mar 15, 2026
12am CDT Mar 15, 2026-6pm CDT Mar 21, 2026



