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

Waterloo, Waterloo Municipal Airport (KALO)

Lat: 42.55°NLon: 92.4°WElev: 873ft.

Fair

-2°F

-19°C

Humidity 79%
Wind Speed Calm
Barometer 30.30 in (1028.4 mb)
Dewpoint -7°F (-22°C)
Visibility 10.00 mi
Last update 20 Jan 12:54 am CST
Extended Forecast for

Waterloo IA

  • Overnight

    Overnight: Mostly clear, with a low around -1. Wind chill values as low as -10. West southwest wind 3 to 5 mph.

    Low: -1 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of snow after 4pm. Increasing clouds, with a high near 20. Wind chill values as low as -10. Light and variable wind becoming south 5 to 8 mph in the afternoon.

    High: 20 °F

    Sunny then
    Slight Chance
    Snow

  • Tuesday Night

    Tuesday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 14. Wind chill values as low as 5. Southeast wind 6 to 8 mph becoming west northwest after midnight. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 14 °F

    Snow Likely
    then Chance
    Snow

  • Wednesday

    Wednesday: A 20 percent chance of snow after noon. Partly sunny, with a high near 29. Wind chill values as low as 5. West southwest wind 9 to 14 mph, with gusts as high as 23 mph.

    High: 29 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 6. West northwest wind 9 to 15 mph, with gusts as high as 23 mph.

    Low: 6 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 18.

    High: 18 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -12.

    Low: -12 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -5.

    High: -5 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -17.

    Low: -17 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around -1. Wind chill values as low as -10. West southwest wind 3 to 5 mph.
Tuesday
A 20 percent chance of snow after 4pm. Increasing clouds, with a high near 20. Wind chill values as low as -10. Light and variable wind becoming south 5 to 8 mph in the afternoon.
Tuesday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 14. Wind chill values as low as 5. Southeast wind 6 to 8 mph becoming west northwest after midnight. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Wednesday
A 20 percent chance of snow after noon. Partly sunny, with a high near 29. Wind chill values as low as 5. West southwest wind 9 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 6. West northwest wind 9 to 15 mph, with gusts as high as 23 mph.
Thursday
Mostly sunny, with a high near 18.
Thursday Night
Partly cloudy, with a low around -12.
Friday
Mostly sunny and cold, with a high near -5.
Friday Night
Mostly cloudy, with a low around -17.
Saturday
Mostly sunny and cold, with a high near -2.
Saturday Night
Partly cloudy, with a low around -11.
Sunday
Mostly sunny and cold, with a high near 10.
Sunday Night
Partly cloudy, with a low around 0.
Monday
Mostly sunny, with a high near 17.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
Last Update:
10:11 pm CST Jan 19, 2026
Forecast Valid:
1am CST Jan 20, 2026-6pm CST Jan 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation