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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Milwaukee-Timmerman (KMWC)

Lat: 43.11°NLon: 88.03°WElev: 735ft.

Fog/Mist

63°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 63°F (17°C)
Visibility 4.00 mi
Last update 19 Sep 6:15 pm CDT
Extended Forecast for

Mequon WI

  • Tonight

    Tonight: A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 4am, then a chance of showers and thunderstorms after 4am. Cloudy, with a low around 61. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 61 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 9am. Mostly cloudy, with a high near 65. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 65 °F

    Chance
    Showers then
    Partly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 53. East wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 53 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 62. East wind 10 to 15 mph.

    High: 62 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 50. East wind around 10 mph.

    Low: 50 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 62. Northeast wind 10 to 15 mph.

    High: 62 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 50. East wind 5 to 10 mph.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 63. Northeast wind 10 to 15 mph.

    High: 63 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 4am, then a chance of showers and thunderstorms after 4am. Cloudy, with a low around 61. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 9am. Mostly cloudy, with a high near 65. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 53. East wind 10 to 15 mph, with gusts as high as 30 mph.
Monday
Mostly cloudy, with a high near 62. East wind 10 to 15 mph.
Monday Night
Mostly cloudy, with a low around 50. East wind around 10 mph.
Tuesday
Mostly cloudy, with a high near 62. Northeast wind 10 to 15 mph.
Tuesday Night
Mostly cloudy, with a low around 50. East wind 5 to 10 mph.
Wednesday
Partly sunny, with a high near 63. Northeast wind 10 to 15 mph.
Wednesday Night
Mostly cloudy, with a low around 51.
Thursday
Partly sunny, with a high near 65.
Thursday Night
Mostly cloudy, with a low around 53.
Friday
Partly sunny, with a high near 68.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Mostly sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mequon WI
 43.22°N 87.99°W (Elev. 699 ft)
Last Update:
6:21 pm CDT Sep 19, 2026
Forecast Valid:
6pm CDT Sep 19, 2026-6pm CDT Sep 26, 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