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

75°F

24°C

Humidity 71%
Wind Speed NE 7 mph
Barometer 29.92 in (1012.9 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 19 Aug 6:54 pm CDT
Extended Forecast for

4 Miles WNW Janesville IA

  • Tonight

    Tonight: Mostly clear, with a low around 57. North northeast wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 79. Calm wind becoming south southwest 5 to 9 mph in the afternoon.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms, mainly between 3am and 5am. Increasing clouds, with a low around 63. South wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Partly Cloudy
    then Showers
    Likely

  • Friday

    Friday: A 10 percent chance of showers and thunderstorms before 7am. Partly sunny, then gradually becoming sunny, with a high near 81. Southwest wind 6 to 11 mph becoming northwest in the afternoon.

    High: 81 °F

    Slight Chance
    T-storms then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. North northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers. Mostly sunny, with a high near 75.

    High: 75 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 57. North northeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 79. Calm wind becoming south southwest 5 to 9 mph in the afternoon.
Thursday Night
Showers likely and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms, mainly between 3am and 5am. Increasing clouds, with a low around 63. South wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 10 percent chance of showers and thunderstorms before 7am. Partly sunny, then gradually becoming sunny, with a high near 81. Southwest wind 6 to 11 mph becoming northwest in the afternoon.
Friday Night
Mostly clear, with a low around 62. North northwest wind 5 to 7 mph becoming calm in the evening.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 57.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Janesville IA
 42.66°N 92.52°W
Last Update:
5:43 pm CDT Aug 19, 2026
Forecast Valid:
7pm CDT Aug 19, 2026-6pm CDT Aug 26, 2026
 
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