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

Hazardous Weather Conditions

Current conditions at

Waterloo, Waterloo Municipal Airport (KALO)

Lat: 42.55°NLon: 92.4°WElev: 873ft.

Fair

4°F

-16°C

Humidity 80%
Wind Speed Calm
Barometer 30.31 in (1028.8 mb)
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Last update 20 Jan 9:54 am CST
Extended Forecast for

Waterloo IA

Winter Weather Advisory January 20, 03:00pm until January 21, 03:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Today

    Today: A 50 percent chance of snow, mainly after 4pm. Increasing clouds, with a high near 20. Wind chill values as low as zero. South southwest wind 3 to 7 mph. Total daytime snow accumulation of less than a half inch possible.

    High: 20 °F

    Mostly Sunny
    then Chance
    Snow

  • Tonight

    Tonight: Snow before 4am, then a chance of flurries between 4am and 5am. Low around 12. Wind chill values as low as 5. South southeast wind 5 to 8 mph becoming west northwest after midnight. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 12 °F

    Snow then
    Snow Likely

  • Wednesday

    Wednesday: A 40 percent chance of snow showers after noon. Patchy blowing snow after 4pm. Partly sunny, with a high near 30. Wind chill values as low as zero. Breezy, with a west southwest wind 9 to 17 mph, with gusts as high as 29 mph. New snow accumulation of less than one inch possible.

    High: 30 °F

    Chance Snow
    Showers and
    Patchy
    Blowing Snow

  • Wednesday Night

    Wednesday Night: Patchy blowing snow before 8pm. Partly cloudy, with a low around 7. Wind chill values as low as -5. Blustery, with a west northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 30 mph.

    Low: 7 °F

    Patchy
    Blowing Snow
    and Blustery
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 17. West wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 17 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -14.

    Low: -14 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -7.

    High: -7 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -14.

    Low: -14 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny and cold, with a high near 0.

    High: 0 °F

    Cold

Detailed Forecast

Today
A 50 percent chance of snow, mainly after 4pm. Increasing clouds, with a high near 20. Wind chill values as low as zero. South southwest wind 3 to 7 mph. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow before 4am, then a chance of flurries between 4am and 5am. Low around 12. Wind chill values as low as 5. South southeast wind 5 to 8 mph becoming west northwest after midnight. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Wednesday
A 40 percent chance of snow showers after noon. Patchy blowing snow after 4pm. Partly sunny, with a high near 30. Wind chill values as low as zero. Breezy, with a west southwest wind 9 to 17 mph, with gusts as high as 29 mph. New snow accumulation of less than one inch possible.
Wednesday Night
Patchy blowing snow before 8pm. Partly cloudy, with a low around 7. Wind chill values as low as -5. Blustery, with a west northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 30 mph.
Thursday
Mostly sunny, with a high near 17. West wind 8 to 11 mph, with gusts as high as 18 mph.
Thursday Night
Partly cloudy, with a low around -14.
Friday
Mostly sunny and cold, with a high near -7.
Friday Night
Mostly cloudy, with a low around -14.
Saturday
Partly sunny and cold, with a high near 0.
Saturday Night
Partly cloudy, with a low around -9.
Sunday
Mostly sunny, with a high near 12.
Sunday Night
Partly cloudy, with a low around -3.
Monday
Mostly sunny, with a high near 17.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
Last Update:
6:43 am CST Jan 20, 2026
Forecast Valid:
10am CST Jan 20, 2026-6pm CST Jan 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation