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

64°F

18°C

Humidity 65%
Wind Speed Calm
Barometer 29.89 in (1011.9 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 18 Jun 8:54 pm CDT
Extended Forecast for

Waterloo IA

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 53. Light west northwest wind.

    Low: 53 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Juneteenth

    Juneteenth: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Increasing clouds, with a high near 78. Light west northwest wind becoming west 5 to 10 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 57. West wind 5 to 9 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 79. Northwest wind 3 to 6 mph.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 59. Calm wind becoming east 5 to 7 mph after midnight. New precipitation amounts of less than a tenth of an inch possible.

    Low: 59 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 10am. High near 71. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    High: 71 °F

    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 55. Breezy.

    Low: 55 °F

    Chance
    Showers and
    Breezy

  • Monday

    Monday: Partly sunny, with a high near 75.

    High: 75 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 53. Light west northwest wind.
Juneteenth
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Increasing clouds, with a high near 78. Light west northwest wind becoming west 5 to 10 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 57. West wind 5 to 9 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 79. Northwest wind 3 to 6 mph.
Saturday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 59. Calm wind becoming east 5 to 7 mph after midnight. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers, with thunderstorms also possible after 10am. High near 71. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Sunday Night
A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 55. Breezy.
Monday
Partly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
A 40 percent chance of showers. Partly cloudy, with a low around 57.
Wednesday
Mostly sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny, with a high near 78.
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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:
8:07 pm CDT Jun 18, 2026
Forecast Valid:
9pm CDT Jun 18, 2026-6pm CDT Jun 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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