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

83°F

28°C

Humidity 72%
Wind Speed SE 6 mph
Barometer 29.82 in (1009.1 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 3 Sep 7:54 pm CDT
Extended Forecast for

Waterloo IA

  • Tonight

    Tonight: Mostly clear, with a low around 72. South wind 7 to 9 mph.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms between 9am and 10am. Sunny, with a high near 92. Heat index values as high as 103. Southeast wind 5 to 8 mph becoming south southwest in the afternoon. Chance of precipitation is 20%.

    High: 92 °F

    Slight Chance
    T-storms then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 70. Light and variable wind.

    Low: 70 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 89. Calm wind becoming east around 5 mph in the afternoon.

    High: 89 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 67. East wind around 6 mph.

    Low: 67 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 72. South wind 7 to 9 mph.
Friday
A slight chance of showers and thunderstorms between 9am and 10am. Sunny, with a high near 92. Heat index values as high as 103. Southeast wind 5 to 8 mph becoming south southwest in the afternoon. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 70. Light and variable wind.
Saturday
Sunny, with a high near 89. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 67. East wind around 6 mph.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 66.
Labor Day
Partly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 90.
Tuesday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 70. Chance of precipitation is 60%.
Wednesday
Partly sunny, with a high near 87.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
Last Update:
8:06 pm CDT Sep 3, 2026
Forecast Valid:
8pm CDT Sep 3, 2026-6pm CDT Sep 10, 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