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

Heavy Rainfall and Flooding in the Southwest and Along the East Coast

A multi-day heavy rainfall event is set to begin across New Mexico into west Texas Tuesday through Wednesday. Flash flooding and debris flows in the vicinity of burn scars will also be possible. A strong coastal low will develop offshore of the Mid-Atlantic coast midweek, bringing heavy rainfall, strong winds and coastal flooding to much of the East Coast through Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Waterloo, Waterloo Municipal Airport (KALO)

Lat: 42.55°NLon: 92.4°WElev: 873ft.

Light Rain

53°F

12°C

Humidity 96%
Wind Speed E 9 mph
Barometer 30.23 in (1023.8 mb)
Dewpoint 52°F (11°C)
Visibility 9.00 mi
Wind Chill50°F (10°C)
Last update 22 Sep 1:54 am CDT
Extended Forecast for

Waterloo IA

  • Overnight

    Overnight: Drizzle likely, mainly before 3am. Cloudy, with a low around 51. East northeast wind around 8 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Drizzle
    Likely

  • Tuesday

    Tuesday: A chance of drizzle, mainly before 7am. Mostly cloudy, with a high near 61. East wind around 9 mph.

    High: 61 °F

    Chance
    Drizzle then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 46. East northeast wind 3 to 7 mph.

    Low: 46 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67. East wind 5 to 7 mph.

    High: 67 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52. East southeast wind 3 to 5 mph.

    Low: 52 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 68.

    High: 68 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Drizzle likely, mainly before 3am. Cloudy, with a low around 51. East northeast wind around 8 mph, with gusts as high as 20 mph.
Tuesday
A chance of drizzle, mainly before 7am. Mostly cloudy, with a high near 61. East wind around 9 mph.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 46. East northeast wind 3 to 7 mph.
Wednesday
Mostly sunny, with a high near 67. East wind 5 to 7 mph.
Wednesday Night
Partly cloudy, with a low around 52. East southeast wind 3 to 5 mph.
Thursday
Mostly cloudy, with a high near 66.
Thursday Night
Mostly cloudy, with a low around 53.
Friday
Mostly cloudy, with a high near 68.
Friday Night
Mostly cloudy, with a low around 53.
Saturday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 55.
Sunday
Partly sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Partly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.51°N 92.35°W
Last Update:
1:51 am CDT Sep 22, 2026
Forecast Valid:
2am CDT Sep 22, 2026-6pm CDT Sep 28, 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