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.

Partly Cloudy

73°F

23°C

Humidity 69%
Wind Speed NW 9 mph
Barometer 29.91 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 26 Aug 7:45 pm CDT
Extended Forecast for

Rockton IL

  • Tonight

    Tonight: Mostly clear, with a low around 60. West northwest wind around 5 mph becoming calm  in the evening. Winds could gust as high as 10 mph.

    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 56. North northwest wind around 5 mph becoming calm  in the evening.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 81 °F

    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 chance of showers, with thunderstorms also possible after 1am.  Mostly cloudy, with a low around 63. Chance of precipitation is 50%.

    Low: 63 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 60. West northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
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 56. North northwest wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 81. Calm wind becoming southwest around 5 mph in the afternoon.
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 chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 85.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Monday
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 65.
Wednesday
A chance of showers. Partly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Rockton IL
 42.45°N 89.08°W
7:41 pm CDT Aug 26, 2026
8pm CDT Aug 26, 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