Severe Thunderstorm and Heavy Rainfall Threat Tonight; Heat Continues on Tuesday Across the Eastern U.S.

Severe weather and flash flooding threats continue across the Central Plains and Midwest into tonight. Very large hail, strong tornadoes and damaging winds are expected. An early season heat wave will continue to challenge temperature records across the eastern U.S. through Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Waterloo, Waterloo Municipal Airport (KALO)

Lat: 42.55°NLon: 92.4°WElev: 873ft.

Fair

65°F

18°C

Humidity 90%
Wind Speed S 17 G 28 mph
Barometer 29.70 in (1005.3 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 19 May 12:54 am CDT
Extended Forecast for

Waterloo IA

  • Overnight

    Overnight: A 30 percent chance of showers, mainly before 2am.  Cloudy, with a low around 54. South southwest wind 11 to 13 mph, with gusts as high as 21 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 8am, then a chance of sprinkles between 8am and 9am.  Cloudy, then gradually becoming mostly sunny, with a steady temperature around 58. Breezy, with a northwest wind around 16 mph, with gusts as high as 25 mph.  Chance of precipitation is 20%.

    High: 58 °F

    Breezy.
    Slight Chance
    Showers then
    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming clear, with a low around 42. North northwest wind 7 to 14 mph, with gusts as high as 21 mph.

    Low: 42 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Increasing clouds, with a high near 62. Northeast wind 6 to 8 mph.

    High: 62 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 45. East northeast wind 5 to 7 mph.

    Low: 45 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm.  Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am.  Mostly cloudy, with a low around 45. Chance of precipitation is 50%.

    Low: 45 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 64. Chance of precipitation is 60%.

    High: 64 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers before 1am.  Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly before 2am. Cloudy, with a low around 54. South southwest wind 11 to 13 mph, with gusts as high as 21 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A slight chance of showers before 8am, then a chance of sprinkles between 8am and 9am. Cloudy, then gradually becoming mostly sunny, with a steady temperature around 58. Breezy, with a northwest wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, then gradually becoming clear, with a low around 42. North northwest wind 7 to 14 mph, with gusts as high as 21 mph.
Wednesday
Increasing clouds, with a high near 62. Northeast wind 6 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 45. East northeast wind 5 to 7 mph.
Thursday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 63.
Thursday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.
Friday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 47.
Saturday
Partly sunny, with a high near 73.
Saturday Night
Mostly cloudy, with a low around 51.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 56.
Memorial Day
Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
12:56 am CDT May 19, 2026
1am CDT May 19, 2026-6pm CDT May 25, 2026
 
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Additional Resources

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Hourly Weather Forecast

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