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

62°F

17°C

Humidity 90%
Wind Speed S 7 mph
Barometer 29.75 in (1006.7 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 16 May 4:54 am CDT
Extended Forecast for

3 Miles SW Waterloo IA

  • Today

    Today: Mostly sunny, with a high near 84. Calm wind becoming east 5 to 8 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 60. East wind 8 to 11 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 84. Windy, with a south wind 15 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 84 °F

    Showers
    Likely and
    Breezy then
    Partly Sunny
    and Windy

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 63. Windy, with a south wind 16 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Showers
    Likely and
    Windy

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 84. Windy, with a south wind 16 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Showers and
    Windy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 57. Windy. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 57 °F

    T-storms and
    Windy

  • Tuesday

    Tuesday: A slight chance of thunderstorms before 7am. Partly sunny, with a high near 71. Windy. Chance of precipitation is 10%.

    High: 71 °F

    Slight Chance
    T-storms and
    Windy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 44. Breezy.

    Low: 44 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 84. Calm wind becoming east 5 to 8 mph in the afternoon.
Tonight
A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 60. East wind 8 to 11 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and thunderstorms likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 84. Windy, with a south wind 15 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 63. Windy, with a south wind 16 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers and possibly a thunderstorm. High near 84. Windy, with a south wind 16 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and possibly a thunderstorm. Low around 57. Windy. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
A slight chance of thunderstorms before 7am. Partly sunny, with a high near 71. Windy. Chance of precipitation is 10%.
Tuesday Night
Mostly cloudy, with a low around 44. Breezy.
Wednesday
Mostly sunny, with a high near 63.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Sunny, with a high near 68.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Waterloo IA
 42.47°N 92.41°W
Last Update:
2:44 am CDT May 16, 2026
Forecast Valid:
5am CDT May 16, 2026-6pm CDT May 22, 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