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.

Overcast

64°F

18°C

Humidity 75%
Wind Speed Calm
Barometer 30.19 in (1022.0 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 23 Jun 7:54 am CDT
Extended Forecast for

4 Miles SSW Janesville IA

  • Today

    Today: Mostly cloudy, with a high near 78. Calm wind becoming south southwest 5 to 9 mph in the afternoon.

    High: 78 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 60. South wind 6 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms before 11am. Mostly sunny, with a high near 80. West wind 7 to 14 mph, with gusts as high as 20 mph.

    High: 80 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. Northwest wind 5 to 10 mph becoming light in the evening.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 76. North wind 5 to 7 mph.

    High: 76 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 77.

    High: 77 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: Partly sunny, with a high near 82. Breezy.

    High: 82 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

Detailed Forecast

Today
Mostly cloudy, with a high near 78. Calm wind becoming south southwest 5 to 9 mph in the afternoon.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 60. South wind 6 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 20 percent chance of showers and thunderstorms before 11am. Mostly sunny, with a high near 80. West wind 7 to 14 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 56. Northwest wind 5 to 10 mph becoming light in the evening.
Thursday
Mostly sunny, with a high near 76. North wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 56.
Friday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 77.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 60.
Saturday
Partly sunny, with a high near 82. Breezy.
Saturday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. Breezy.
Sunday
Mostly sunny, with a high near 89. Windy.
Sunday Night
Mostly clear, with a low around 73. Windy.
Monday
Sunny, with a high near 91. Windy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Janesville IA
 42.6°N 92.49°W
Last Update:
6:52 am CDT Jun 23, 2026
Forecast Valid:
8am CDT Jun 23, 2026-6pm CDT Jun 29, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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