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 and Breezy

25°F

-4°C

Humidity 72%
Wind Speed NW 22 G 32 mph
Barometer 30.10 in (1020.4 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 10 Jan 5:54 pm CST
Extended Forecast for

Janesville IA

  • Tonight

    Tonight: A chance of flurries before 10pm. Mostly cloudy, with a low around 18. Wind chill values as low as 5. Windy, with a northwest wind 17 to 24 mph, with gusts as high as 34 mph.

    Low: 18 °F

    Chance
    Flurries and
    Windy

  • Sunday

    Sunday: Sunny, with a high near 30. Wind chill values as low as 5. Northwest wind 9 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 23 mph.

    High: 30 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 26. Southwest wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 26 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 43. West wind 7 to 9 mph.

    High: 43 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 33. Southwest wind 8 to 14 mph, with gusts as high as 21 mph.

    Low: 33 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 48. Breezy.

    High: 48 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 25. Blustery.

    Low: 25 °F

    Mostly Cloudy
    and Blustery

  • Wednesday

    Wednesday: Partly sunny, with a high near 29. Blustery.

    High: 29 °F

    Partly Sunny
    and Blustery

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of flurries before 10pm. Mostly cloudy, with a low around 18. Wind chill values as low as 5. Windy, with a northwest wind 17 to 24 mph, with gusts as high as 34 mph.
Sunday
Sunny, with a high near 30. Wind chill values as low as 5. Northwest wind 9 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 23 mph.
Sunday Night
Increasing clouds, with a low around 26. Southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 43. West wind 7 to 9 mph.
Monday Night
Mostly cloudy, with a low around 33. Southwest wind 8 to 14 mph, with gusts as high as 21 mph.
Tuesday
Partly sunny, with a high near 48. Breezy.
Tuesday Night
Mostly cloudy, with a low around 25. Blustery.
Wednesday
Partly sunny, with a high near 29. Blustery.
Wednesday Night
Partly cloudy, with a low around 18.
Thursday
Partly sunny, with a high near 35.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 27.
Friday
A 30 percent chance of snow. Mostly cloudy, with a high near 32. Windy.
Friday Night
Mostly cloudy, with a low around 13. Blustery.
Saturday
Partly sunny, with a high near 21. Blustery.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Janesville IA
 42.66°N 92.46°W
Last Update:
5:01 pm CST Jan 10, 2026
Forecast Valid:
6pm CST Jan 10, 2026-6pm CST Jan 17, 2026
 
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Additional Resources

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Chance of Precipitation