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

73°F

23°C

Humidity 46%
Wind Speed W 9 mph
Barometer 30.00 in (1015.5 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 20 Jun 11:54 am CDT
Extended Forecast for

Waterloo IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 78. West northwest wind around 9 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: A 10 percent chance of showers after 5am. Increasing clouds, with a low around 57. Calm wind becoming east around 5 mph after midnight.

    Low: 57 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Showers likely after 7am. Cloudy, with a high near 70. East wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 70 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 8pm. Mostly cloudy, with a low around 54. East northeast wind 7 to 13 mph, with gusts as high as 21 mph.

    Low: 54 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77. North northeast wind around 7 mph.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 78. West northwest wind around 9 mph.
Tonight
A 10 percent chance of showers after 5am. Increasing clouds, with a low around 57. Calm wind becoming east around 5 mph after midnight.
Sunday
Showers likely after 7am. Cloudy, with a high near 70. East wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A 20 percent chance of showers before 8pm. Mostly cloudy, with a low around 54. East northeast wind 7 to 13 mph, with gusts as high as 21 mph.
Monday
Mostly sunny, with a high near 77. North northeast wind around 7 mph.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 78.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 56.
Friday
Mostly sunny, with a high near 79.
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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:
11:52 am CDT Jun 20, 2026
Forecast Valid:
12pm CDT Jun 20, 2026-6pm CDT Jun 26, 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