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

Vigorous System Impacting the Northwest; Large System To Affect East

A potent storm system is delivering heavy rainfall, strong winds, rough surf and beach erosion along the Pacific Northwest coast with mountain snow inland. Expect a couple more systems to arrive late week into the weekend. Meanwhile, another developing large scale system will deliver a heavy rain and renewed flood threat to much of the East late Wednesday through Friday, which may impact travel. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

36°F

2°C

Humidity 81%
Wind Speed S 12 mph
Barometer 29.97 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 18 Dec 9:15 pm CST
Extended Forecast for

Harvard IL

  • Tonight

    Tonight: Partly cloudy, with a low around 30. South southwest wind around 10 mph, with gusts as high as 20 mph.

    Partly Cloudy

    Low: 30 °F

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 42. South southwest wind around 10 mph, with gusts as high as 20 mph.

    Mostly Cloudy

    High: 42 °F

  • Wednesday
    Night

    Wednesday Night: A 20 percent chance of rain after midnight. Cloudy, with a steady temperature around 40. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Cloudy then
    Slight Chance
    Rain

    Low: 40 °F

  • Thursday

    Thursday: A chance of rain before 5pm, then a chance of rain and snow. Cloudy, with a high near 40. Southwest wind 5 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

    Chance Rain
    then Chance
    Rain/Snow

    High: 40 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 28. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Mostly Cloudy

    Low: 28 °F

  • Friday

    Friday: Partly sunny, with a high near 33.

    Partly Sunny

    High: 33 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 23.

    Partly Cloudy

    Low: 23 °F

  • Saturday

    Saturday: Partly sunny, with a high near 34.

    Partly Sunny

    High: 34 °F

  • Saturday
    Night

    Saturday Night: Mostly cloudy, with a low around 23.

    Mostly Cloudy

    Low: 23 °F

Detailed Forecast

Tonight
Partly cloudy, with a low around 30. South southwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, with a high near 42. South southwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night
A 20 percent chance of rain after midnight. Cloudy, with a steady temperature around 40. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday
A chance of rain before 5pm, then a chance of rain and snow. Cloudy, with a high near 40. Southwest wind 5 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 28. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Partly sunny, with a high near 33.
Friday Night
Partly cloudy, with a low around 23.
Saturday
Partly sunny, with a high near 34.
Saturday Night
Mostly cloudy, with a low around 23.
Sunday
A slight chance of snow before noon. Partly sunny, with a high near 33.
Sunday Night
Partly cloudy, with a low around 20.
Monday
Partly sunny, with a high near 33.
Monday Night
A chance of snow. Mostly cloudy, with a low around 25.
Christmas Day
A chance of rain and snow. Partly sunny, with a high near 35.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Harvard IL
 42.42°N 88.61°W
Last Update:
9:15 pm CST Dec 18, 2018
Forecast Valid:
9pm CST Dec 18, 2018-6pm CST Dec 25, 2018
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation