Mequon, WI Weather & Growing Conditions
Tonight
60°F
Showers And Thunderstorms
Rain showers likely before 1am, then showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 60. East wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 60°F | Showers And Thunderstorms | 10 to 15 mph E | 96% |
| Saturday | 67°F | Showers And Thunderstorms | 5 to 15 mph SE | 95% |
| Saturday Night | 58°F | Showers And Thunderstorms | 5 to 10 mph NE | 75% |
| Sunday | 65°F | Chance Rain Showers | 10 to 20 mph NE | 33% |
| Sunday Night | 54°F | Mostly Cloudy | 10 to 20 mph NE | 4% |
| Monday | 63°F | Mostly Cloudy | 10 to 15 mph NE | 14% |
| Monday Night | 50°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 15% |
| Tuesday | 62°F | Slight Chance Rain Showers then Partly Sunny | 10 to 15 mph NE | 15% |
| Tuesday Night | 50°F | Mostly Cloudy | 5 to 10 mph NE | 13% |
| Wednesday | 64°F | Partly Sunny | 5 to 10 mph NE | 13% |
| Wednesday Night | 50°F | Mostly Cloudy | 0 to 5 mph N | 6% |
| Thursday | 67°F | Partly Sunny | 5 mph NE | 3% |
| Thursday Night | 51°F | Partly Cloudy | 0 to 5 mph N | 4% |
| Friday | 69°F | Mostly Sunny | 0 to 5 mph N | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mequon, WI
Last spring frost
Apr 23
First fall frost
Oct 24
Growing season
182 days
Hardiness zone
5b
Explore more for Mequon, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Grafton Wwtp, Wi (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.