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

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Fair

55°F

13°C

Humidity 82%
Wind Speed S 6 mph
Barometer 30.01 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 11 Oct 6:45 am CDT
Extended Forecast for

Oconomowoc Lake WI

  • Today

    Today: Sunny, with a high near 80. Calm wind becoming south around 5 mph in the morning.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 60. South wind around 5 mph.

    Low: 60 °F

    Increasing
    Clouds

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 83. Southwest wind 5 to 10 mph.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. Southwest wind around 5 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74. Southwest wind 5 to 10 mph becoming northwest in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers. Partly cloudy, with a low around 53. Northwest wind around 5 mph becoming calm.

    Low: 53 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 66. Calm wind becoming northeast around 5 mph in the morning.

    High: 66 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 49. Northeast wind around 5 mph.

    Low: 49 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers. Mostly cloudy, with a high near 64.

    High: 64 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 80. Calm wind becoming south around 5 mph in the morning.
Tonight
Increasing clouds, with a low around 60. South wind around 5 mph.
Columbus Day
Mostly sunny, with a high near 83. Southwest wind 5 to 10 mph.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. Southwest wind around 5 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 74. Southwest wind 5 to 10 mph becoming northwest in the afternoon.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 53. Northwest wind around 5 mph becoming calm.
Wednesday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 66. Calm wind becoming northeast around 5 mph in the morning.
Wednesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 49. Northeast wind around 5 mph.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 64.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 45.
Friday
A 20 percent chance of showers. Mostly cloudy, with a high near 58. Breezy.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Mostly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Oconomowoc Lake WI
 43.1°N 88.45°W (Elev. 860 ft)
Last Update:
4:26 am CDT Oct 11, 2026
Forecast Valid:
7am CDT Oct 11, 2026-6pm CDT Oct 17, 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