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

81°F

27°C

Humidity 26%
Wind Speed SW 8 mph
Barometer 29.82 in (1009.5 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 21 Apr 3:54 pm CDT
Extended Forecast for

Waterloo IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 81. Southwest wind around 5 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 51. West wind around 5 mph becoming light and variable after midnight.

    Low: 51 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80. South southeast wind 5 to 13 mph, with gusts as high as 20 mph.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. South wind 11 to 13 mph, with gusts as high as 20 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. Windy, with a south wind 14 to 21 mph, with gusts as high as 32 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Mostly Sunny
    and Breezy
    then Chance
    T-storms and
    Windy

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Low around 55. Breezy. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Showers and
    Breezy

  • Friday

    Friday: A 30 percent chance of showers, mainly before 1pm. Mostly sunny, with a high near 67.

    High: 67 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 81. Southwest wind around 5 mph.
Tonight
Clear, with a low around 51. West wind around 5 mph becoming light and variable after midnight.
Wednesday
Sunny, with a high near 80. South southeast wind 5 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 59. South wind 11 to 13 mph, with gusts as high as 20 mph.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. Windy, with a south wind 14 to 21 mph, with gusts as high as 32 mph. 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 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Low around 55. Breezy. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A 30 percent chance of showers, mainly before 1pm. Mostly sunny, with a high near 67.
Friday Night
Mostly clear, with a low around 44.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Mostly cloudy, with a low around 46.
Sunday
Partly sunny, with a high near 68.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 50. Windy.
Monday
A 50 percent chance of showers. Mostly cloudy, with a high near 62. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
Last Update:
4:22 pm CDT Apr 21, 2026
Forecast Valid:
4pm CDT Apr 21, 2026-6pm CDT Apr 27, 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