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.

Mostly Cloudy

51°F

11°C

Humidity 64%
Wind Speed E 9 mph
Barometer 30.14 in (1020.7 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 21 May 10:54 pm CDT
Extended Forecast for

Waterloo IA

  • Tonight

    Tonight: Mostly cloudy, with a low around 46. East wind around 11 mph, with gusts as high as 18 mph.

    Low: 46 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 67. East southeast wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 67 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A slight chance of showers before 2am, then a slight chance of showers after 3am. Cloudy, then gradually becoming partly cloudy, with a low around 51. East southeast wind 5 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 10%.

    Low: 51 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 74. South southeast wind 5 to 7 mph becoming west in the afternoon.

    High: 74 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 51. West northwest wind around 6 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 46. East wind around 11 mph, with gusts as high as 18 mph.
Friday
Mostly cloudy, with a high near 67. East southeast wind 11 to 14 mph, with gusts as high as 22 mph.
Friday Night
A slight chance of showers before 2am, then a slight chance of showers after 3am. Cloudy, then gradually becoming partly cloudy, with a low around 51. East southeast wind 5 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 10%.
Saturday
Partly sunny, with a high near 74. South southeast wind 5 to 7 mph becoming west in the afternoon.
Saturday Night
Mostly cloudy, with a low around 51. West northwest wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 54.
Memorial Day
Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 60.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 61.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
Last Update:
10:26 pm CDT May 21, 2026
Forecast Valid:
11pm CDT May 21, 2026-6pm CDT May 28, 2026
 
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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