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.

Overcast

46°F

8°C

Humidity 68%
Wind Speed Vrbl 3 mph
Barometer 30.05 in (1017.9 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 1 May 9:54 am CDT
Extended Forecast for

Waterloo IA

Frost Advisory May 2, 01:00am until May 2, 08:00am
Click here for hazard details and duration
Frost Advisory

  • Today

    Today: A chance of rain before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm, then a slight chance of showers after 4pm. Mostly cloudy, with a high near 56. Light north wind becoming north northwest 5 to 9 mph in the afternoon. Chance of precipitation is 20%.

    High: 56 °F

    Partly Sunny
    then Chance
    Showers

  • Tonight

    Tonight: A chance of sprinkles before 7pm. Areas of frost after 3am. Otherwise, partly cloudy, with a low around 35. North wind 5 to 9 mph becoming calm after midnight.

    Low: 35 °F

    Chance
    Sprinkles
    then Areas
    Frost

  • Saturday

    Saturday: Areas of frost before 8am. Otherwise, sunny, with a high near 61. Calm wind becoming west northwest 5 to 7 mph in the morning.

    High: 61 °F

    Areas Frost
    then Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 46. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 46 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 72. South southwest wind around 11 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 72 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 76.

    High: 76 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

Detailed Forecast

Today
A chance of rain before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm, then a slight chance of showers after 4pm. Mostly cloudy, with a high near 56. Light north wind becoming north northwest 5 to 9 mph in the afternoon. Chance of precipitation is 20%.
Tonight
A chance of sprinkles before 7pm. Areas of frost after 3am. Otherwise, partly cloudy, with a low around 35. North wind 5 to 9 mph becoming calm after midnight.
Saturday
Areas of frost before 8am. Otherwise, sunny, with a high near 61. Calm wind becoming west northwest 5 to 7 mph in the morning.
Saturday Night
Increasing clouds, with a low around 46. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Sunday
Mostly sunny, with a high near 72. South southwest wind around 11 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Mostly clear, with a low around 46.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 76.
Monday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 43.
Tuesday
Partly sunny, with a high near 60.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Mostly sunny, with a high near 57.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
Sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
Last Update:
9:02 am CDT May 1, 2026
Forecast Valid:
10am CDT May 1, 2026-6pm CDT May 7, 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