Port Wing, WI Weather & Growing Conditions
Today
77°F
Mostly Sunny
Mostly sunny. High near 77, with temperatures falling to around 75 in the afternoon. West wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Mostly Sunny | 5 to 10 mph W | 4% |
| Tonight | 56°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Wednesday | 81°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 62°F | Partly Cloudy | 0 to 5 mph SW | 1% |
| Thursday | 87°F | Sunny | 5 to 10 mph SW | 9% |
| Thursday Night | 68°F | Mostly Clear | 5 mph SW | 4% |
| Friday | 88°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 18% |
| Friday Night | 64°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 5 mph W | 36% |
| Saturday | 82°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph NW | 23% |
| Saturday Night | 62°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 mph | 40% |
| Sunday | 80°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 27% |
| Sunday Night | 61°F | Slight Chance Rain Showers then Partly Cloudy | 0 mph | 24% |
| Monday | 80°F | Slight Chance Rain Showers | 0 to 5 mph NW | 19% |
| Monday Night | 60°F | Slight Chance Rain Showers | 0 mph | 17% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Port Wing, WI
Last spring frost
May 31
First fall frost
Oct 2
Growing season
123 days
Hardiness zone
5a
Explore more for Port Wing, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Port Wing, Wi (1.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.