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

39°F

4°C

Humidity 48%
Wind Speed S 8 mph
Barometer 30.11 in (1020.1 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 29 Mar 3:54 am CDT
Extended Forecast for

Waterloo IA

  • Today

    Today: Mostly sunny, with a high near 68. South wind 8 to 15 mph, with gusts as high as 23 mph.

    High: 68 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 45. South wind 6 to 10 mph.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 23 mph.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. South wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 65. Breezy, with a south southwest wind 14 to 18 mph becoming north northwest in the afternoon. Winds could gust as high as 28 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 65 °F

    Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 33. Breezy.

    Low: 33 °F

    Slight Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of rain and snow showers. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.

    Low: 31 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow showers. Mostly cloudy, with a high near 42. Chance of precipitation is 50%.

    High: 42 °F

    Chance
    Rain/Snow

Detailed Forecast

Today
Mostly sunny, with a high near 68. South wind 8 to 15 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 45. South wind 6 to 10 mph.
Monday
Sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 23 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. South wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 40 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 65. Breezy, with a south southwest wind 14 to 18 mph becoming north northwest in the afternoon. Winds could gust as high as 28 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 33. Breezy.
Wednesday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 49.
Wednesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Thursday
A chance of rain and snow showers. Mostly cloudy, with a high near 42. Chance of precipitation is 50%.
Thursday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 33.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 56.
Friday Night
Showers likely. Mostly cloudy, with a low around 41. Chance of precipitation is 70%.
Saturday
A 50 percent chance of showers. Mostly cloudy, with a high near 53. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
Last Update:
2:43 am CDT Mar 29, 2026
Forecast Valid:
4am CDT Mar 29, 2026-6pm CDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation