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

48°F

9°C

Humidity 100%
Wind Speed Calm
Barometer 30.01 in (1016.0 mb)
Dewpoint 48°F (9°C)
Visibility 9.00 mi
Last update 24 May 3:54 am CDT
Extended Forecast for

Waterloo IA

  • Today

    Today: Sunny, with a high near 81. Light west southwest wind becoming southwest 5 to 10 mph in the morning.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 57. South southwest wind 7 to 9 mph.

    Low: 57 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Memorial Day

    Memorial Day: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Mostly sunny, with a high near 84. South wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60. South wind 6 to 9 mph.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87. South wind 6 to 8 mph.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.

    Low: 61 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 81. Light west southwest wind becoming southwest 5 to 10 mph in the morning.
Tonight
A 10 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 57. South southwest wind 7 to 9 mph.
Memorial Day
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Mostly sunny, with a high near 84. South wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Mostly clear, with a low around 60. South wind 6 to 9 mph.
Tuesday
Sunny, with a high near 87. South wind 6 to 8 mph.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Mostly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Mostly 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:
3:43 am CDT May 24, 2026
Forecast Valid:
4am CDT May 24, 2026-6pm CDT May 30, 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