Cedarburg, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cedarburg, a city in Ozaukee County, Wisconsin.
Today
83°F
Mostly Sunny
Mostly sunny, with a high near 83. South wind 5 to 10 mph.
7-day forecast for Cedarburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny | 5 to 10 mph S | 8% |
| Tonight | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph SW | 86% |
| Wednesday | 74°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 59% |
| Wednesday Night | 60°F | Chance Showers And Thunderstorms | 0 mph | 38% |
| Thursday | 78°F | Slight Chance Rain Showers then Mostly Sunny | 0 to 5 mph NE | 17% |
| Thursday Night | 59°F | Mostly Clear | 0 mph | 6% |
| Friday | 82°F | Sunny | 0 to 5 mph SW | 2% |
| Friday Night | 63°F | Mostly Clear | 5 mph SW | 6% |
| Saturday | 84°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 15% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 mph SW | 29% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 29% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph SW | 52% |
| Monday | 82°F | Chance Rain Showers | 5 mph S | 40% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 5 mph N | 43% |
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 Aug 4, 2026.