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

Heavy Rainfall Continues from the Southwest to the Plains; Severe Thunderstorms in the Southern Plains

Pacific tropical moisture wrapping into a storm will continue a multi-day heavy rainfall event this week that will impact the Southwest into the Plains. Scattered severe thunderstorms capable of mainly severe wind gusts appear possible across portions of the southern Plains this afternoon into tonight. There is also a risk of isolated severe winds gusts and tornadoes in Kansas into Nebraska. Read More >

Hazardous Weather Conditions

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Light Rain Fog/Mist

59°F

15°C

Humidity 100%
Wind Speed S 7 mph
Barometer 29.90 in
Dewpoint 59°F (15°C)
Visibility 4.00 mi
Last update 30 Sep 6:45 am CDT
Extended Forecast for

Merton WI

  • Today

    Today: Showers, mainly before 11am, then a slight chance of drizzle after 1pm. High near 67. Southwest wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 67 °F

    Showers then
    Slight Chance
    Showers

  • Tonight

    Tonight: Showers, with thunderstorms also possible after 4am. Low around 63. Southwest wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Showers
    Likely then
    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm, then showers after 10am. High near 67. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 67 °F

    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 48. North wind around 5 mph.

    Low: 48 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 63. North wind 5 to 10 mph.

    High: 63 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 63. Calm wind becoming south around 5 mph in the afternoon.

    High: 63 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46. South wind around 5 mph becoming calm.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

Today
Showers, mainly before 11am, then a slight chance of drizzle after 1pm. High near 67. Southwest wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Showers, with thunderstorms also possible after 4am. Low around 63. Southwest wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers likely and possibly a thunderstorm, then showers after 10am. High near 67. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 48. North wind around 5 mph.
Friday
Mostly sunny, with a high near 63. North wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 42. Calm wind.
Saturday
Mostly sunny, with a high near 63. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 46. South wind around 5 mph becoming calm.
Sunday
Mostly sunny, with a high near 64.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 59.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Merton WI
 43.14°N 88.32°W (Elev. 958 ft)
Last Update:
6:48 am CDT Sep 30, 2026
Forecast Valid:
7am CDT Sep 30, 2026-6pm CDT Oct 6, 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