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

Milwaukee-Timmerman (KMWC)

Lat: 43.11°NLon: 88.03°WElev: 735ft.

Mostly Cloudy

54°F

12°C

Humidity 88%
Wind Speed Calm
Barometer 30.25 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 21 Sep 8:15 pm CDT
Extended Forecast for

Lannon WI

  • Tonight

    Tonight: Showers likely, mainly before 11pm. Mostly cloudy, with a low around 51. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Showers
    Likely then
    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 60. Northeast wind 5 to 15 mph.

    High: 60 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50. East wind around 5 mph.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 63. East wind 5 to 10 mph.

    High: 63 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. Northeast wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 63. Calm wind becoming east around 5 mph in the morning.

    High: 63 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 64. Calm wind becoming east around 5 mph in the afternoon.

    High: 64 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 51. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Mostly cloudy, with a high near 60. Northeast wind 5 to 15 mph.
Tuesday Night
Partly cloudy, with a low around 50. East wind around 5 mph.
Wednesday
Partly sunny, with a high near 63. East wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 51. Northeast wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 63. Calm wind becoming east around 5 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 50. Calm wind.
Friday
Mostly sunny, with a high near 64. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 63.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 50.
Sunday
A 20 percent chance of showers. Partly sunny, with a high near 67.
Sunday Night
Mostly cloudy, with a low around 53.
Monday
Partly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lannon WI
 43.16°N 88.17°W (Elev. 899 ft)
Last Update:
7:33 pm CDT Sep 21, 2026
Forecast Valid:
8pm CDT Sep 21, 2026-6pm CDT Sep 28, 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