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

36°F

2°C

Humidity 82%
Wind Speed Calm
Barometer 30.36 in (1028.8 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 10 Apr 10:54 pm CDT
Extended Forecast for

Waterloo IA

  • Tonight

    Tonight: Mostly clear, with a low around 37. East wind 3 to 5 mph.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Showers likely, with thunderstorms also possible after 4pm. Increasing clouds, with a high near 56. Southeast wind 7 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 56 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a temperature rising to around 56 by 5am. Breezy, with a south southeast wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F⇑

    Chance
    Showers then
    Showers
    Likely and
    Breezy

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 70. Windy, with a south southwest wind 16 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Windy. Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 60. Breezy, with a south southwest wind 10 to 17 mph, with gusts as high as 28 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Chance
    T-storms and
    Breezy then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 83. Breezy. Chance of precipitation is 60%.

    High: 83 °F

    Chance
    Showers then
    Showers
    Likely and
    Breezy

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers. Partly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 37. East wind 3 to 5 mph.
Saturday
Showers likely, with thunderstorms also possible after 4pm. Increasing clouds, with a high near 56. Southeast wind 7 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a temperature rising to around 56 by 5am. Breezy, with a south southeast wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 70. Windy, with a south southwest wind 16 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 60. Breezy, with a south southwest wind 10 to 17 mph, with gusts as high as 28 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly sunny, with a high near 79.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 83. Breezy. Chance of precipitation is 60%.
Tuesday Night
A 50 percent chance of showers. Partly cloudy, with a low around 56.
Wednesday
A 40 percent chance of showers. Mostly sunny, with a high near 72.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 53.
Thursday
A 30 percent chance of showers. Sunny, with a high near 77.
Thursday Night
A 30 percent chance of showers. Mostly clear, with a low around 54.
Friday
A 40 percent chance of showers. Mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
Last Update:
10:16 pm CDT Apr 10, 2026
Forecast Valid:
11pm CDT Apr 10, 2026-6pm CDT Apr 17, 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