Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

61°F

16°C

Humidity 94%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 27 Aug 12:35 am CDT
Extended Forecast for

3 Miles W Harvard IL

  • Overnight

    Overnight: Mostly clear, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 79. Light northwest wind becoming north northwest 5 to 10 mph in the morning.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. North wind around 5 mph becoming calm.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 80. Calm wind becoming southwest around 5 mph.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. South wind around 5 mph.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 64. Chance of precipitation is 50%.

    Low: 64 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers.  Mostly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 60. Calm wind.
Thursday
Sunny, with a high near 79. Light northwest wind becoming north northwest 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 57. North wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 80. Calm wind becoming southwest around 5 mph.
Friday Night
Partly cloudy, with a low around 59. South wind around 5 mph.
Saturday
Partly sunny, with a high near 80.
Saturday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 69.
Monday
Partly sunny, with a high near 87.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 66.
Wednesday
A chance of showers. Partly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Harvard IL
 42.42°N 88.67°W
7:41 pm CDT Aug 26, 2026
12am CDT Aug 27, 2026-6pm CDT Sep 2, 2026
 
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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