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.

Fog

38°F

3°C

Humidity 100%
Wind Speed SW 3 mph
Barometer 30.00 in (1016.5 mb)
Dewpoint 38°F (3°C)
Visibility 0.25 mi
Last update 5 Mar 7:54 am CST
Extended Forecast for

Waterloo IA

  • Today

    Today: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 55. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 55 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Tonight

    Tonight: A slight chance of rain before 3am, then a chance of showers and thunderstorms between 3am and 4am, then showers and possibly a thunderstorm after 4am. Low around 45. Southeast wind 6 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 45 °F

    Mostly Cloudy
    then Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 70. South southwest wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 70 °F

    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Low around 35. Breezy, with a south wind 11 to 17 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Showers then
    Rain Likely
    and Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 47. Breezy, with a west northwest wind 8 to 17 mph, with gusts as high as 24 mph.

    High: 47 °F

    Partly Sunny
    and Breezy
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 62. Breezy.

    High: 62 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 55. Calm wind becoming east southeast around 6 mph in the afternoon.
Tonight
A slight chance of rain before 3am, then a chance of showers and thunderstorms between 3am and 4am, then showers and possibly a thunderstorm after 4am. Low around 45. Southeast wind 6 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm. High near 70. South southwest wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Low around 35. Breezy, with a south wind 11 to 17 mph becoming west after midnight. Winds could gust as high as 24 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 47. Breezy, with a west northwest wind 8 to 17 mph, with gusts as high as 24 mph.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Sunny, with a high near 62. Breezy.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 44.
Tuesday
A 50 percent chance of rain. Mostly sunny, with a high near 64.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Blustery. Chance of precipitation is 50%.
Wednesday
A chance of rain and snow. Mostly sunny, with a high near 45. Breezy. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
Last Update:
7:57 am CST Mar 5, 2026
Forecast Valid:
8am CST Mar 5, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation