Kewaunee, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Kewaunee, a city in Kewaunee County, Wisconsin.
Today
81°F
Mostly Sunny then Chance Showers And Thunderstorms
A slight chance of rain showers between 3pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny. High near 81, with temperatures falling to around 78 in the afternoon. Heat index values as high as 83. South southwest wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Kewaunee
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Mostly Sunny then Chance Showers And Thunderstorms | 8 to 14 mph SSW | 29% |
| Tonight | 63°F | Chance Showers And Thunderstorms | 5 to 9 mph W | 77% |
| Wednesday | 74°F | Slight Chance Rain Showers | 6 mph NE | 18% |
| Wednesday Night | 60°F | Slight Chance Rain Showers | 5 mph SE | 10% |
| Thursday | 77°F | Sunny | 2 to 8 mph S | 4% |
| Thursday Night | 62°F | Mostly Clear | 7 mph SSW | 1% |
| Friday | 81°F | Sunny | 5 to 14 mph SSW | 0% |
| Friday Night | 64°F | Mostly Clear | 8 to 13 mph SSW | 9% |
| Saturday | 80°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 8 to 12 mph SSW | 17% |
| Saturday Night | 65°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 7 to 10 mph SSW | 43% |
| Sunday | 79°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 10 mph SW | 43% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 6 to 9 mph WSW | 46% |
| Monday | 76°F | Chance Showers And Thunderstorms | 8 mph SW | 32% |
| Monday Night | 63°F | Chance Showers And Thunderstorms | 7 mph NNE | 38% |
Forecast source: National Weather Service (api.weather.gov) for Kewaunee (44.464, -87.522). Updated through the day.
Growing snapshot for Kewaunee
Last spring frost
May 1
First fall frost
Oct 18
Growing season
168 days
Hardiness zone
5b
More local growing data for Kewaunee: nearby ZIP 54216 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Kewaunee, Wi (3.6 mi from Kewaunee). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.