National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fog

37°F

3°C

Humidity 100%
Wind Speed E 5 mph
Barometer 29.98 in
Dewpoint 37°F (3°C)
Visibility 0.25 mi
Wind Chill33°F (1°C)
Last update 5 Mar 1:15 am CST
Extended Forecast for

2 Miles N Janesville WI

Dense Fog Advisory March 5, 01:28am until March 5, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory March 5, 01:28am until March 5, 12:00pm

    NOW until 12:00pm Thu

    Dense Fog Advisory

  • Overnight

    Low: 39 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Thursday

    Thursday: A 30 percent chance of rain, mainly before 9am. Patchy fog before 3pm, then patchy fog after 4pm. Otherwise, cloudy, with a high near 48. Northeast wind around 5 mph.

    High: 48 °F

    Chance Rain
    and Patchy
    Fog then
    Patchy Fog

  • Thursday Night

    Thursday Night: Patchy fog. Otherwise, cloudy, with a low around 39. Southeast wind around 5 mph.

    Low: 39 °F

    Patchy Fog

  • Friday

    Friday: Showers, with thunderstorms also possible after 9am. High near 67. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 67 °F

    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 48. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Showers
    Likely then
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before noon. Cloudy, then gradually becoming mostly sunny, with a high near 56. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 56 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33. Northwest wind 5 to 10 mph becoming southwest after midnight.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 59 °F

    Sunny then
    Sunny and
    Breezy

Detailed Forecast

Overnight
A 20 percent chance of rain. Patchy fog after 4am. Otherwise, cloudy, with a low around 39. Northeast wind around 5 mph.
Thursday
A 30 percent chance of rain, mainly before 9am. Patchy fog before 3pm, then patchy fog after 4pm. Otherwise, cloudy, with a high near 48. Northeast wind around 5 mph.
Thursday Night
Patchy fog. Otherwise, cloudy, with a low around 39. Southeast wind around 5 mph.
Friday
Showers, with thunderstorms also possible after 9am. High near 67. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and possibly a thunderstorm. Low around 48. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A 20 percent chance of showers before noon. Cloudy, then gradually becoming mostly sunny, with a high near 56. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Mostly clear, with a low around 33. Northwest wind 5 to 10 mph becoming southwest after midnight.
Sunday
Sunny, with a high near 59. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 44.
Monday
Sunny, with a high near 68.
Monday Night
A 20 percent chance of rain. Mostly clear, with a low around 44.
Tuesday
Rain likely. Mostly sunny, with a high near 63. Chance of precipitation is 70%.
Tuesday Night
Rain. Low around 35. Chance of precipitation is 80%.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 48. Chance of precipitation is 50%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Janesville WI
 42.71°N 89°W (Elev. 892 ft)
Last Update:
1:22 am CST Mar 5, 2026
Forecast Valid:
1am CST Mar 5, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation