National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Waterloo, Waterloo Municipal Airport (KALO)

Lat: 42.55°NLon: 92.4°WElev: 873ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Waterloo IA

  • Overnight

    Overnight: Mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 65. South wind 3 to 8 mph.

    Low: 65 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Showers and thunderstorms likely before 1pm, then a slight chance of showers between 1pm and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 82. South wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71. South southeast wind around 14 mph, with gusts as high as 24 mph.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 56. Calm wind.
Friday
Sunny, with a high near 84. Calm wind becoming west southwest around 6 mph in the afternoon.
Friday Night
Increasing clouds, with a low around 65. South wind 3 to 8 mph.
Saturday
Showers and thunderstorms likely before 1pm, then a slight chance of showers between 1pm and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 82. South wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Partly cloudy, with a low around 71. South southeast wind around 14 mph, with gusts as high as 24 mph.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.
Monday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 72.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
A 40 percent chance of showers. Partly cloudy, with a low around 69.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 71.
Thursday
Mostly sunny, with a high near 88.
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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:
1:26 am CDT Aug 28, 2026
Forecast Valid:
3am CDT Aug 28, 2026-6pm CDT Sep 3, 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