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.

Overcast

43°F

6°C

Humidity 86%
Wind Speed E 6 mph
Barometer 30.01 in (1017.1 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 4 Mar 5:54 pm CST
Extended Forecast for

Waterloo IA

  • Tonight

    Tonight: A chance of sprinkles before 4am, then a slight chance of rain between 4am and 5am, then a chance of sprinkles after 5am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 39. East southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 39 °F

    Patchy Fog
    then Slight
    Chance Rain
    and Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 56. Light and variable wind becoming east southeast 5 to 7 mph in the afternoon.

    High: 56 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm, mainly after 3am. Patchy fog after 1am. Low around 44. Southeast wind 6 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 44 °F

    Mostly Cloudy
    then Rain and
    Patchy Fog

  • Friday

    Friday: Rain and possibly a thunderstorm. High near 68. South wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 68 °F

    Rain then
    Rain Likely

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm before midnight, then a chance of rain. Low around 35. South wind 13 to 15 mph becoming west northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Rain then
    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 34.

    Low: 34 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 61. Breezy.

    High: 61 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of sprinkles before 4am, then a slight chance of rain between 4am and 5am, then a chance of sprinkles after 5am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 39. East southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Thursday
Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 56. Light and variable wind becoming east southeast 5 to 7 mph in the afternoon.
Thursday Night
Rain and possibly a thunderstorm, mainly after 3am. Patchy fog after 1am. Low around 44. Southeast wind 6 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Rain and possibly a thunderstorm. High near 68. South wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Rain and possibly a thunderstorm before midnight, then a chance of rain. Low around 35. South wind 13 to 15 mph becoming west northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Mostly sunny, with a high near 48.
Saturday Night
Clear, with a low around 34.
Sunday
Sunny, with a high near 61. Breezy.
Sunday Night
Mostly clear, with a low around 44.
Monday
Sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 43.
Tuesday
Rain likely. Partly sunny, with a high near 57. Breezy. Chance of precipitation is 60%.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 25. Blustery. Chance of precipitation is 50%.
Wednesday
Partly sunny, with a high near 37. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
Last Update:
5:17 pm CST Mar 4, 2026
Forecast Valid:
6pm CST Mar 4, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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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