Cedarburg, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cedarburg, a city in Ozaukee County, Wisconsin.
This Afternoon
68°F
Rain Showers Likely
Rain showers likely. Cloudy. High near 68, with temperatures falling to around 62 in the afternoon. South wind around 15 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Cedarburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Rain Showers Likely | 15 mph S | 59% |
| Tonight | 57°F | Rain Showers | 10 to 15 mph S | 86% |
| Wednesday | 63°F | Rain Showers | 10 to 15 mph S | 86% |
| Wednesday Night | 47°F | Chance Rain Showers then Chance Light Rain | 10 mph SW | 34% |
| Thursday | 54°F | Light Rain Likely | 5 to 10 mph SW | 64% |
| Thursday Night | 39°F | Light Rain Likely | 5 to 10 mph NW | 60% |
| Friday | 49°F | Chance Light Rain | 10 to 15 mph N | 29% |
| Friday Night | 34°F | Mostly Cloudy | 5 mph N | 7% |
| Saturday | 51°F | Mostly Sunny | 0 to 5 mph W | 4% |
| Saturday Night | 34°F | Partly Cloudy | 0 to 5 mph W | 8% |
| Sunday | 56°F | Slight Chance Light Rain | 5 to 10 mph W | 17% |
| Sunday Night | 36°F | Partly Cloudy | 5 mph W | 6% |
| Monday | 58°F | Mostly Sunny | 5 to 15 mph W | 3% |
| Monday Night | 40°F | Partly Cloudy | 5 to 10 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov) for Cedarburg (43.300, -87.988). Updated through the day.
Growing snapshot for Cedarburg
Last spring frost
Apr 23
First fall frost
Oct 24
Growing season
182 days
Hardiness zone
5b
More local growing data for Cedarburg: nearby ZIP 53012 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grafton Wwtp, Wi (4 mi from Cedarburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.