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

Tracking Storm System Across the Central U.S.

A storm system will slowly continue to press across the central U.S. Friday and Saturday with widespread showers and thunderstorms. Slight risks for severe thunderstorms and excessive rainfall have been issued Saturday from the Ozarks into the mid-Mississippi River Valley with potential for damaging winds, large hail, tornadoes, and flash flooding. Read More >

Current conditions at

Milwaukee-Timmerman (KMWC)

Lat: 43.11°NLon: 88.03°WElev: 735ft.

Fair

55°F

13°C

Humidity 82%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 16 Oct 11:55 pm CDT
Extended Forecast for

Lannon WI

  • Overnight

    Overnight: Mostly cloudy, with a low around 54. Southeast wind 5 to 10 mph.

    Low: 54 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 73. South wind 10 to 15 mph.

    High: 73 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. South wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 70. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely after 10pm. Mostly cloudy, with a low around 47. Southwest wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 47 °F

    Showers
    Likely

  • Sunday

    Sunday: A 40 percent chance of showers before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 58. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 58 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40. West wind 5 to 10 mph.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 64. South wind 5 to 15 mph.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 54. Southeast wind 5 to 10 mph.
Friday
Mostly cloudy, with a high near 73. South wind 10 to 15 mph.
Friday Night
A slight chance of showers and thunderstorms between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. South wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 70. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms, then showers likely after 10pm. Mostly cloudy, with a low around 47. Southwest wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
A 40 percent chance of showers before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 58. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 40. West wind 5 to 10 mph.
Monday
Sunny, with a high near 64. South wind 5 to 15 mph.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 44.
Tuesday
A 40 percent chance of showers. Partly sunny, with a high near 54.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 37.
Wednesday
Mostly sunny, with a high near 54.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 41.
Thursday
A 20 percent chance of showers. Partly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lannon WI
 43.16°N 88.17°W (Elev. 899 ft)
Last Update:
10:41 pm CDT Oct 16, 2025
Forecast Valid:
12am CDT Oct 17, 2025-6pm CDT Oct 23, 2025
 
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