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

Hazardous Weather Conditions

Current conditions at

Waterloo, Waterloo Municipal Airport (KALO)

Lat: 42.55°NLon: 92.4°WElev: 873ft.

Fair

87°F

31°C

Humidity 63%
Wind Speed E 6 mph
Barometer 30.09 in (1018.2 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 28 Jul 4:54 pm CDT
Extended Forecast for

4 Miles SSW Janesville IA

Heat Advisory July 28, 05:24pm until July 28, 08:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory July 28, 05:24pm until July 28, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Tonight

    Low: 70 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly before 8am. Partly sunny, with a high near 87. South wind 6 to 9 mph becoming north in the afternoon. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Chance
    T-storms then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. North northeast wind around 8 mph. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77. East northeast wind 7 to 11 mph. New rainfall amounts between 1 and 2 inches possible.

    High: 77 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Northeast wind 7 to 10 mph. Chance of precipitation is 20%.

    Low: 59 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly between 1am and 5am. Increasing clouds, with a low around 70. Southeast wind around 6 mph becoming northwest after midnight. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 8am. Partly sunny, with a high near 87. South wind 6 to 9 mph becoming north in the afternoon. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. North northeast wind around 8 mph. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77. East northeast wind 7 to 11 mph. New rainfall amounts between 1 and 2 inches possible.
Wednesday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Northeast wind 7 to 10 mph. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 76.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 57.
Sunday
Mostly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 59.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Janesville IA
 42.6°N 92.49°W
Last Update:
4:34 pm CDT Jul 28, 2025
Forecast Valid:
5pm CDT Jul 28, 2025-6pm CDT Aug 4, 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