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

Waterloo, Waterloo Municipal Airport (KALO)

Lat: 42.55°NLon: 92.4°WElev: 873ft.

Fair

45°F

7°C

Humidity 90%
Wind Speed Calm
Barometer 29.88 in (1012.0 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 24 Apr 10:54 pm CDT
Extended Forecast for

Waterloo IA

  • Tonight

    Tonight: Clear, with a low around 42. Light north northeast wind.

    Low: 42 °F

    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 70. Northeast wind 5 to 8 mph becoming east southeast in the afternoon.

    High: 70 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 47. East southeast wind around 8 mph.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 70. East southeast wind 8 to 15 mph, with gusts as high as 24 mph.

    High: 70 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 55. Breezy, with an east southeast wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Breezy.
    Slight Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 69. Breezy. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 69 °F

    Showers and
    Breezy

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 45. Windy.

    Low: 45 °F

    Chance
    Showers and
    Windy

  • Tuesday

    Tuesday: Partly sunny, with a high near 60. Windy.

    High: 60 °F

    Partly Sunny
    and Windy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 42. Light north northeast wind.
Saturday
Mostly sunny, with a high near 70. Northeast wind 5 to 8 mph becoming east southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 47. East southeast wind around 8 mph.
Sunday
Mostly sunny, with a high near 70. East southeast wind 8 to 15 mph, with gusts as high as 24 mph.
Sunday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 55. Breezy, with an east southeast wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers and possibly a thunderstorm. High near 69. Breezy. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Monday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 45. Windy.
Tuesday
Partly sunny, with a high near 60. Windy.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Sunny, with a high near 62.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Mostly cloudy, with a low around 41.
Friday
Mostly sunny, with a high near 59.
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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:
10:22 pm CDT Apr 24, 2026
Forecast Valid:
11pm CDT Apr 24, 2026-6pm CDT May 1, 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