Cedarburg, WI Weather & Growing Conditions
Tonight
58°F
Rain Showers
Rain showers before 1am, then showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 58. 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 | 58°F | Rain Showers | 10 to 15 mph E | 97% |
| Saturday | 66°F | Showers And Thunderstorms | 5 to 15 mph SE | 95% |
| Saturday Night | 58°F | Showers And Thunderstorms Likely | 5 to 10 mph NE | 74% |
| Sunday | 64°F | Chance Rain Showers | 10 to 20 mph NE | 33% |
| Sunday Night | 53°F | Mostly Cloudy | 10 to 15 mph NE | 3% |
| Monday | 62°F | Mostly Cloudy | 10 to 15 mph NE | 14% |
| Monday Night | 49°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 15% |
| Tuesday | 61°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 15% |
| Tuesday Night | 49°F | Mostly Cloudy | 5 to 10 mph NE | 12% |
| Wednesday | 63°F | Partly Sunny | 5 to 10 mph NE | 12% |
| Wednesday Night | 50°F | Mostly Cloudy | 0 to 5 mph NE | 6% |
| Thursday | 66°F | Partly Sunny | 0 to 5 mph NE | 2% |
| Thursday Night | 50°F | Partly Cloudy | 0 to 5 mph N | 4% |
| Friday | 68°F | Mostly Sunny | 0 to 5 mph N | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cedarburg, WI
Last spring frost
Apr 23
First fall frost
Oct 24
Growing season
182 days
Hardiness zone
5b
Explore more for Cedarburg, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Grafton Wwtp, Wi (4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.