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

30°F

-1°C

Humidity 96%
Wind Speed S 7 mph
Barometer 29.93 in (1014.5 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 7 Mar 11:54 pm CDT
Extended Forecast for

Waterloo IA

  • Tonight

    Tonight: Mostly clear, with a temperature rising to around 35 by 3am. South southwest wind 5 to 13 mph, with gusts as high as 21 mph.

    Low: 32 °F⇑

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 62. Breezy, with a southwest wind 11 to 16 mph, with gusts as high as 28 mph.

    High: 62 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43. Breezy, with a southwest wind 11 to 16 mph, with gusts as high as 28 mph.

    Low: 43 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: Sunny, with a high near 67. South southwest wind 7 to 9 mph.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 42. South wind around 8 mph becoming north northeast in the evening.

    Low: 42 °F

    Clear

  • Tuesday

    Tuesday: A slight chance of rain between noon and 3pm, then a slight chance of rain and thunderstorms after 3pm. Mostly sunny, with a high near 65. Chance of precipitation is 20%.

    High: 65 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 32. Breezy.

    Low: 32 °F

    Chance Rain
    and Breezy

  • Wednesday

    Wednesday: A chance of rain and snow before noon, then a slight chance of snow. Partly sunny, with a high near 43. Breezy. Chance of precipitation is 40%.

    High: 43 °F

    Breezy.
    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26. Blustery.

    Low: 26 °F

    Mostly Clear
    and Blustery
    then Partly
    Cloudy

Detailed Forecast

Tonight
Mostly clear, with a temperature rising to around 35 by 3am. South southwest wind 5 to 13 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 62. Breezy, with a southwest wind 11 to 16 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 43. Breezy, with a southwest wind 11 to 16 mph, with gusts as high as 28 mph.
Monday
Sunny, with a high near 67. South southwest wind 7 to 9 mph.
Monday Night
Clear, with a low around 42. South wind around 8 mph becoming north northeast in the evening.
Tuesday
A slight chance of rain between noon and 3pm, then a slight chance of rain and thunderstorms after 3pm. Mostly sunny, with a high near 65. Chance of precipitation is 20%.
Tuesday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 32. Breezy.
Wednesday
A chance of rain and snow before noon, then a slight chance of snow. Partly sunny, with a high near 43. Breezy. Chance of precipitation is 40%.
Wednesday Night
Partly cloudy, with a low around 26. Blustery.
Thursday
Partly sunny, with a high near 51.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 39. Breezy.
Friday
Partly sunny, with a high near 54. Breezy.
Friday Night
Mostly cloudy, with a low around 27.
Saturday
Mostly cloudy, with a high near 43.
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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:
10:22 pm CST Mar 7, 2026
Forecast Valid:
11pm CST Mar 7, 2026-6pm CDT Mar 14, 2026
 
Forecast Discussion
 
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Additional Resources

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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