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

Hot Temperatures in the Northwest U.S.; Excessive Rainfall Potential in the Southwest U.S.

Hot to extremely hot daytime temperatures remain in place across coastal southern California and the interior Northwest, with the Northwest carrying the potential for record-breaking high temperatures. A combination of monsoonal moisture and tropical moisture ahead of tropical cyclone Lorena will bring a marginal to slight risk of excessive rainfall across the southwest U.S. this week. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

61°F

16°C

Humidity 83%
Wind Speed SW 5 mph
Barometer 29.93 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 2 Sep 11:35 pm CDT
Extended Forecast for

Beloit WI

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 57. Calm wind becoming southwest around 5 mph after midnight.

    Low: 57 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely before 4pm, then a slight chance of showers. Cloudy, with a high near 69. Southwest wind 5 to 15 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41. Northwest wind 5 to 10 mph.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 63. Light northwest wind becoming west 5 to 10 mph in the morning.

    High: 63 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 50. South wind 5 to 15 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Mostly sunny, with a high near 62. West wind around 15 mph.

    High: 62 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 43. West wind 5 to 10 mph.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 64. West wind 5 to 10 mph.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 57. Calm wind becoming southwest around 5 mph after midnight.
Wednesday
Showers and thunderstorms likely before 4pm, then a slight chance of showers. Cloudy, with a high near 69. Southwest wind 5 to 15 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Partly cloudy, with a low around 41. Northwest wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 63. Light northwest wind becoming west 5 to 10 mph in the morning.
Thursday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 50. South wind 5 to 15 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Mostly sunny, with a high near 62. West wind around 15 mph.
Friday Night
Mostly clear, with a low around 43. West wind 5 to 10 mph.
Saturday
Sunny, with a high near 64. West wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 45.
Monday
Partly sunny, with a high near 69.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 52.
Tuesday
A 20 percent chance of showers. Mostly cloudy, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Beloit WI
 42.54°N 89.01°W (Elev. 810 ft)
Last Update:
11:24 pm CDT Sep 2, 2025
Forecast Valid:
11pm CDT Sep 2, 2025-6pm CDT Sep 9, 2025
 
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