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

Severe Thunderstorms and Critical Fire Weather Wednesday

Scattered severe thunderstorms are possible across portions of the northern High Plains Wednesday afternoon and evening. Severe wind gusts are the primary hazard. Gusty winds and low relative humidity will contribute to critical fire weather conditions across parts of the northern Great Plains and Great Basin Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Waterloo, Waterloo Municipal Airport (KALO)

Lat: 42.55°NLon: 92.4°WElev: 873ft.

Fair

58°F

14°C

Humidity 42%
Wind Speed NW 13 mph
Barometer 29.97 in (1014.6 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 13 May 12:54 am CDT
Extended Forecast for

Waterloo IA

  • Overnight

    Overnight: Clear, with a low around 48. Northwest wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 48 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72. North northwest wind 11 to 15 mph, with gusts as high as 25 mph.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 45. North wind 5 to 9 mph becoming calm.

    Low: 45 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 77. Breezy, with a south southeast wind 7 to 17 mph, with gusts as high as 26 mph.

    High: 77 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 55. South southeast wind 11 to 15 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a slight chance of showers after 1am. Mostly clear, with a low around 55. Chance of precipitation is 30%.

    Low: 55 °F

    Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 87.

    High: 87 °F

    Sunny then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.

    Low: 57 °F

    Showers
    Likely

Detailed Forecast

Overnight
Clear, with a low around 48. Northwest wind 7 to 10 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 72. North northwest wind 11 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Clear, with a low around 45. North wind 5 to 9 mph becoming calm.
Thursday
Sunny, with a high near 77. Breezy, with a south southeast wind 7 to 17 mph, with gusts as high as 26 mph.
Thursday Night
A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 55. South southeast wind 11 to 15 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
Sunny, with a high near 86.
Friday Night
A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a slight chance of showers after 1am. Mostly clear, with a low around 55. Chance of precipitation is 30%.
Saturday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 87.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Breezy.
Sunday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 60. Breezy. Chance of precipitation is 60%.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 81. Windy. Chance of precipitation is 70%.
Monday Night
Showers likely. Mostly cloudy, with a low around 53. Breezy. Chance of precipitation is 60%.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
Last Update:
1:27 am CDT May 13, 2026
Forecast Valid:
1am CDT May 13, 2026-6pm CDT May 19, 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