Mequon, WI Weather & Growing Conditions
Tonight
57°F
Rain Showers
Rain showers. Cloudy, with a low around 57. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Rain Showers | 10 to 15 mph S | 86% |
| Wednesday | 63°F | Rain Showers | 10 to 15 mph S | 84% |
| Wednesday Night | 46°F | Slight Chance Rain Showers then Chance Light Rain | 10 mph SW | 30% |
| Thursday | 54°F | Light Rain Likely | 5 to 10 mph W | 61% |
| Thursday Night | 39°F | Light Rain Likely | 5 to 10 mph NW | 60% |
| Friday | 49°F | Chance Light Rain | 10 to 15 mph N | 30% |
| Friday Night | 34°F | Mostly Cloudy | 5 to 10 mph N | 10% |
| Saturday | 51°F | Mostly Sunny | 5 mph W | 4% |
| Saturday Night | 34°F | Partly Cloudy | 0 to 5 mph W | 8% |
| Sunday | 57°F | Mostly Sunny then Slight Chance Light Rain | 5 to 10 mph W | 17% |
| Sunday Night | 35°F | Partly Cloudy | 5 mph W | 7% |
| Monday | 58°F | Mostly Sunny | 5 to 15 mph W | 3% |
| Monday Night | 40°F | Partly Cloudy | 5 to 10 mph W | 2% |
| Tuesday | 58°F | Sunny | 5 to 10 mph NW | 0% |
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
6a
Explore more for Mequon, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Grafton Wwtp, Wi (6.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.