Heat Persists in the South Central U.S. and California; Heavy Rain in the Ohio Valley

Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest and California this week with limited nighttime relief. Heavy rainfall will lead to localized areas of flash flooding in parts of the Ohio Valley/Central Appalachians. Dry and breezy conditions will enhance fire weather concerns across the northern Rockies and High Plains. Read More >

Current conditions at

Waterloo, Waterloo Municipal Airport (KALO)

Lat: 42.55°NLon: 92.4°WElev: 873ft.

Fair

70°F

21°C

Humidity 73%
Wind Speed W 5 mph
Barometer 30.01 in (1015.9 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 9 Sep 8:54 pm CDT
Extended Forecast for

Waterloo IA

  • Tonight

    Tonight: Patchy fog after 5am.  Otherwise, partly cloudy, with a low around 59. Northwest wind around 5 mph becoming calm  after midnight.

    Low: 59 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Sunny, with a high near 78. Light north wind.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 59. Calm wind becoming south around 5 mph after midnight.

    Low: 59 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 79. South wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 64. South southeast wind 9 to 13 mph, with gusts as high as 20 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Mostly Clear
    then Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers and thunderstorms.  Partly sunny, with a high near 77. Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 57.

    Low: 57 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 74.

    High: 74 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 63. Breezy.

    Low: 63 °F

    Chance
    T-storms and
    Breezy

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 59. Northwest wind around 5 mph becoming calm after midnight.
Thursday
Sunny, with a high near 78. Light north wind.
Thursday Night
Clear, with a low around 59. Calm wind becoming south around 5 mph after midnight.
Friday
Sunny, with a high near 79. South wind 6 to 14 mph, with gusts as high as 21 mph.
Friday Night
A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. South southeast wind 9 to 13 mph, with gusts as high as 20 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 77. Chance of precipitation is 20%.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 57.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 74.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Breezy.
Monday
Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. Breezy. Chance of precipitation is 70%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. Breezy. Chance of precipitation is 70%.
Tuesday
Partly sunny, with a high near 72.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 56.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
8:36 pm CDT Sep 9, 2026
9pm CDT Sep 9, 2026-6pm CDT Sep 16, 2026
 
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Additional Resources

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Hourly Weather Forecast

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