Severe Storms Expected Across Upper Midwest

Strong to severe thunderstorms with damaging winds, large hail, and heavy rain are expected across the Upper Mississippi Valley, which includes the Twin Cities metro area. Meanwhile, heavy rain and thunderstorms may produce flooding across the Mid Mississippi Valley and in the St. Louis metro region. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

81°F

27°C

Humidity 70%
Wind Speed SW 9 mph
Barometer 30.05 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 9 Aug 9:45 am CDT
Extended Forecast for

Janesville WI

  • Today

    Today: A 10 percent chance of showers and thunderstorms after 5pm.  Mostly sunny, with a high near 88. Heat index values as high as 96. South wind 10 to 15 mph.

    Mostly Sunny
    then Slight
    Chance
    T-storms

    High: 88 °F

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after midnight.  Mostly cloudy, with a low around 72. South wind 5 to 10 mph.

    Chance
    T-storms

    Low: 72 °F

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 1pm.  Patchy fog before 8am.  Otherwise, partly sunny, with a high near 87. South wind around 10 mph becoming west in the afternoon.

    Chance
    T-storms and
    Patchy Fog

    High: 87 °F

  • Monday
    Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am.  Mostly cloudy, with a low around 61. Northwest wind 5 to 10 mph.

    Slight Chance
    T-storms

    Low: 61 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. North wind around 5 mph.

    Mostly Sunny

    High: 83 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 60. Northeast wind around 5 mph becoming calm.

    Partly Cloudy

    Low: 60 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85. Calm wind becoming east around 5 mph in the afternoon.

    Mostly Sunny

    High: 85 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 62. East wind around 5 mph becoming calm  in the evening.

    Partly Cloudy

    Low: 62 °F

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 85.

    Slight Chance
    T-storms

    High: 85 °F

Detailed Forecast

Today
A 10 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 88. Heat index values as high as 96. South wind 10 to 15 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 72. South wind 5 to 10 mph.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 87. South wind around 10 mph becoming west in the afternoon.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 61. Northwest wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 83. North wind around 5 mph.
Tuesday Night
Partly cloudy, with a low around 60. Northeast wind around 5 mph becoming calm.
Wednesday
Mostly sunny, with a high near 85. Calm wind becoming east around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 62. East wind around 5 mph becoming calm in the evening.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Thursday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Click Map For Forecast
Point Forecast:
Janesville WI
 42.67°N 89.04°W (Elev. 774 ft)
8:09 am CDT Aug 9, 2020
10am CDT Aug 9, 2020-6pm CDT Aug 15, 2020
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database