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

79°F

26°C

Humidity 82%
Wind Speed S 16 G 26 mph
Barometer 29.67 in (1003.9 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 21 Jun 1:54 am CDT
Extended Forecast for

3 Miles SW Waterloo IA

Heat Advisory June 21, 12:00pm until June 22, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 77. Windy, with a south southwest wind 18 to 22 mph, with gusts as high as 32 mph.

    Low: 77 °F

    Mostly Clear
    and Windy

  • Saturday

    Saturday: Sunny, with a high near 96. Heat index values as high as 106. Windy, with a south southwest wind 22 to 25 mph, with gusts as high as 38 mph.

    High: 96 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. Windy, with a south southwest wind 17 to 22 mph, with gusts as high as 32 mph.

    Low: 77 °F

    Mostly Clear
    and Windy

  • Sunday

    Sunday: Sunny, with a high near 96. Heat index values as high as 102. Windy, with a south wind 18 to 23 mph, with gusts as high as 34 mph.

    High: 96 °F

    Sunny and
    Windy

  • Sunday Night

    Sunday Night: Clear, with a low around 76. Windy, with a south wind 17 to 21 mph, with gusts as high as 32 mph.

    Low: 76 °F

    Clear and
    Windy

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Breezy. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 93 °F

    Breezy. Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 67. Chance of precipitation is 80%.

    Low: 67 °F

    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 69. Chance of precipitation is 80%.

    Low: 69 °F

    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 77. Windy, with a south southwest wind 18 to 22 mph, with gusts as high as 32 mph.
Saturday
Sunny, with a high near 96. Heat index values as high as 106. Windy, with a south southwest wind 22 to 25 mph, with gusts as high as 38 mph.
Saturday Night
Mostly clear, with a low around 77. Windy, with a south southwest wind 17 to 22 mph, with gusts as high as 32 mph.
Sunday
Sunny, with a high near 96. Heat index values as high as 102. Windy, with a south wind 18 to 23 mph, with gusts as high as 34 mph.
Sunday Night
Clear, with a low around 76. Windy, with a south wind 17 to 21 mph, with gusts as high as 32 mph.
Monday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Breezy. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and possibly a thunderstorm. Low around 67. Chance of precipitation is 80%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 69. Chance of precipitation is 80%.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Waterloo IA
 42.47°N 92.41°W
Last Update:
11:01 pm CDT Jun 20, 2025
Forecast Valid:
2am CDT Jun 21, 2025-6pm CDT Jun 27, 2025
 
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