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

74°F

23°C

Humidity 25%
Wind Speed S 18 G 29 mph
Barometer 29.99 in (1015.4 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 14 May 11:54 am CDT
Extended Forecast for

Waterloo IA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 78. Windy, with a south wind 17 to 21 mph, with gusts as high as 29 mph.

    High: 78 °F

    Mostly Sunny
    and Windy

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 55. South southeast wind 11 to 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: A 10 percent chance of showers after 5pm. Sunny, with a high near 86. South wind around 11 mph.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 4am, then a chance of showers. Increasing clouds, with a low around 57. South wind 5 to 10 mph becoming light after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Showers
    Likely then
    Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. East northeast wind 3 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm, then showers and thunderstorms after 7pm. Low around 58. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86. Windy.

    High: 86 °F

    Chance
    T-storms and
    Windy

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 65. Windy.

    Low: 65 °F

    Chance
    T-storms and
    Windy

  • Monday

    Monday: Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 88. Windy. Chance of precipitation is 70%.

    High: 88 °F

    Showers
    Likely and
    Windy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 78. Windy, with a south wind 17 to 21 mph, with gusts as high as 29 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 55. South southeast wind 11 to 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A 10 percent chance of showers after 5pm. Sunny, with a high near 86. South wind around 11 mph.
Friday Night
Showers and thunderstorms likely before 4am, then a chance of showers. Increasing clouds, with a low around 57. South wind 5 to 10 mph becoming light after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. East northeast wind 3 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm, then showers and thunderstorms after 7pm. Low around 58. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86. Windy.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 65. Windy.
Monday
Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 88. Windy. Chance of precipitation is 70%.
Monday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 59. Windy. Chance of precipitation is 80%.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 77. Breezy.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Partly sunny, with a high near 71.
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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:
12:26 pm CDT May 14, 2026
Forecast Valid:
12pm CDT May 14, 2026-6pm CDT May 20, 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