Widespread Showers in the Eastern US; Severe Thunderstorms in the Plains; Heatwave in the Desert Southwest

Widespread showers and thunderstorms across much of the central and eastern U.S. will produce areas of excessive rainfall, especially in the southern Mid-Atlantic states. Scattered severe thunderstorms are expected from Montana into portions of the central/southern Plains this weekend. A heatwave will build in the Desert Southwest, in parts of Arizona, southeastern California, and southern Nevada. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

64°F

18°C

Humidity 68%
Wind Speed E 5 mph
Barometer 30.12 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 15 Jun 7:45 am CDT
Extended Forecast for

Harvard IL

  • Today

    Today: Partly sunny, with a high near 81. East wind around 5 mph.

    High: 81 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 59. East wind around 5 mph becoming calm  after midnight.

    Low: 59 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 84. Light southeast wind becoming south southeast 5 to 10 mph in the morning.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 65. South southeast wind around 5 mph.

    Low: 65 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 89. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 89 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely.  Mostly cloudy, with a low around 66. Chance of precipitation is 70%.

    Low: 66 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms likely.  Mostly cloudy, with a high near 80. Chance of precipitation is 70%.

    High: 80 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: Sunny, with a high near 80.

    High: 80 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 81. East wind around 5 mph.
Tonight
Mostly cloudy, with a low around 59. East wind around 5 mph becoming calm after midnight.
Monday
Mostly sunny, with a high near 84. Light southeast wind becoming south southeast 5 to 10 mph in the morning.
Monday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. South southeast wind around 5 mph.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 89. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.
Wednesday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 62.
Juneteenth
Sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 61.
Friday
Mostly sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 68.
Saturday
Mostly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
Harvard IL
 42.42°N 88.61°W
8:42 am CDT Jun 15, 2025
8am CDT Jun 15, 2025-6pm CDT Jun 21, 2025
 
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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