Port Wing, WI Weather & Growing Conditions
Tonight
48°F
Light Rain
Rain. Cloudy. Low around 48, with temperatures rising to around 50 overnight. Northeast wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Light Rain | 5 to 10 mph NE | 84% |
| Wednesday | 52°F | Rain | 5 to 10 mph NE | 81% |
| Wednesday Night | 41°F | Light Rain | 5 to 15 mph N | 88% |
| Thursday | 44°F | Light Rain Likely then Mostly Cloudy | 15 mph N | 73% |
| Thursday Night | 31°F | Mostly Cloudy | 5 to 15 mph NE | 5% |
| Friday | 42°F | Partly Sunny | 0 to 10 mph NE | 2% |
| Friday Night | 29°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Saturday | 48°F | Mostly Sunny | 5 to 10 mph SW | 1% |
| Saturday Night | 35°F | Partly Cloudy | 5 to 10 mph SW | 13% |
| Sunday | 51°F | Mostly Sunny | 10 mph W | 11% |
| Sunday Night | 36°F | Partly Cloudy | 5 mph SW | 3% |
| Monday | 52°F | Partly Sunny | 5 to 15 mph SW | 1% |
| Monday Night | 37°F | Partly Cloudy | 10 mph W | 0% |
| Tuesday | 48°F | Mostly Sunny | 5 to 10 mph W | 0% |
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 Nov 4, 2026.