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

Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Current conditions at

Waterloo, Waterloo Municipal Airport (KALO)

Lat: 42.55°NLon: 92.4°WElev: 873ft.

Mostly Cloudy

80°F

27°C

Humidity 54%
Wind Speed NW 20 G 29 mph
Barometer 29.98 in (1014.5 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 26 Aug 1:54 pm CDT
Extended Forecast for

Waterloo IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 82. Northwest wind around 14 mph, with gusts as high as 22 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. Northwest wind 5 to 8 mph.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81. North northwest wind 3 to 7 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Light and variable wind.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 40%.

    High: 83 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Breezy.

    Low: 71 °F

    Slight Chance
    T-storms and
    Breezy

  • Sunday

    Sunday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 82. Northwest wind around 14 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 61. Northwest wind 5 to 8 mph.
Thursday
Sunny, with a high near 81. North northwest wind 3 to 7 mph.
Thursday Night
Mostly clear, with a low around 58. Light and variable wind.
Friday
Sunny, with a high near 82. Calm wind becoming south southwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 66.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Breezy.
Sunday
Mostly sunny, with a high near 92.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 50%.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 90.
Monday Night
Partly cloudy, with a low around 69.
Tuesday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
Last Update:
1:43 pm CDT Aug 26, 2026
Forecast Valid:
2pm CDT Aug 26, 2026-6pm CDT Sep 1, 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