Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Hazardous Weather Conditions

Current conditions at

Waterloo, Waterloo Municipal Airport (KALO)

Lat: 42.55°NLon: 92.4°WElev: 873ft.

Fair

45°F

7°C

Humidity 90%
Wind Speed W 7 mph
Barometer 30.25 in (1024.8 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 20 May 12:54 am CDT
Extended Forecast for

Waterloo IA

  • Overnight

    Overnight: Partly cloudy, with a low around 41. North northwest wind around 7 mph.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Increasing clouds, with a high near 63. North northeast wind 6 to 8 mph.

    High: 63 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 45. East northeast wind 5 to 8 mph.

    Low: 45 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 62. East wind 9 to 11 mph.

    High: 62 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 50 percent chance of showers, mainly after 1am.  Cloudy, with a low around 45. East wind around 11 mph, with gusts as high as 18 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Friday

    Friday: Showers likely.  Mostly cloudy, with a high near 61. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Showers
    Likely

  • Friday Night

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

    Low: 47 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 41. North northwest wind around 7 mph.
Wednesday
Increasing clouds, with a high near 63. North northeast wind 6 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 45. East northeast wind 5 to 8 mph.
Thursday
Mostly cloudy, with a high near 62. East wind 9 to 11 mph.
Thursday Night
A 50 percent chance of showers, mainly after 1am. Cloudy, with a low around 45. East wind around 11 mph, with gusts as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers likely. Mostly cloudy, with a high near 61. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 47.
Saturday
Partly sunny, with a high near 72.
Saturday Night
Mostly cloudy, with a low around 50.
Sunday
Sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 53.
Memorial Day
Sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
10:11 pm CDT May 19, 2026
1am CDT May 20, 2026-6pm CDT May 26, 2026
 
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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