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

74°F

23°C

Humidity 54%
Wind Speed S 16 mph
Barometer 29.81 in (1009.2 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 22 Apr 7:54 pm CDT
Extended Forecast for

Waterloo IA

  • Tonight

    Tonight: Partly cloudy, with a low around 59. South wind 11 to 13 mph, with gusts as high as 21 mph.

    Low: 59 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 75. Windy, with a south wind 14 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Partly Sunny
    and Breezy
    then Showers
    Likely and
    Windy

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 4am, then showers likely. Low around 53. South wind 9 to 14 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 53 °F

    T-storms then
    Showers

  • Friday

    Friday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 64. Northwest wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 64 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 42. North wind 7 to 10 mph.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 68. Breezy.

    High: 68 °F

    Mostly Sunny
    then Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Showers likely. Mostly cloudy, with a low around 52. Windy. Chance of precipitation is 70%.

    Low: 52 °F

    Showers
    Likely and
    Windy

Detailed Forecast

Tonight
Partly cloudy, with a low around 59. South wind 11 to 13 mph, with gusts as high as 21 mph.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 75. Windy, with a south wind 14 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and possibly a thunderstorm before 4am, then showers likely. Low around 53. South wind 9 to 14 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Friday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 64. Northwest wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 42. North wind 7 to 10 mph.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Mostly cloudy, with a low around 47.
Sunday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 68. Breezy.
Sunday Night
Showers likely. Mostly cloudy, with a low around 52. Windy. Chance of precipitation is 70%.
Monday
Showers. High near 64. Windy. Chance of precipitation is 80%.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 44. Windy.
Tuesday
Partly sunny, with a high near 60. Breezy.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Mostly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.51°N 92.35°W
Last Update:
6:16 pm CDT Apr 22, 2026
Forecast Valid:
8pm CDT Apr 22, 2026-6pm CDT Apr 29, 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