Green Bay, WI Weather & Growing Conditions
Overnight
55°F
Rain Showers Likely
Rain showers likely. Cloudy, with a low around 55. East southeast wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Rain Showers Likely | 8 mph ESE | 66% |
| Saturday | 63°F | Rain Showers Likely | 12 mph E | 70% |
| Saturday Night | 53°F | Rain Showers Likely | 12 mph NE | 62% |
| Sunday | 66°F | Mostly Sunny | 12 to 16 mph NNE | 7% |
| Sunday Night | 50°F | Mostly Cloudy | 10 to 15 mph NE | 0% |
| Monday | 61°F | Mostly Cloudy | 10 to 14 mph ENE | 1% |
| Monday Night | 47°F | Mostly Cloudy | 8 to 13 mph ENE | 1% |
| Tuesday | 62°F | Mostly Sunny | 8 to 13 mph ENE | 0% |
| Tuesday Night | 47°F | Mostly Clear | 6 to 12 mph ENE | 2% |
| Wednesday | 64°F | Mostly Sunny | 6 to 10 mph ENE | 3% |
| Wednesday Night | 49°F | Mostly Clear | 3 to 8 mph NE | 1% |
| Thursday | 66°F | Mostly Sunny | 5 to 8 mph NE | 1% |
| Thursday Night | 49°F | Partly Cloudy | 2 to 6 mph NE | 2% |
| Friday | 70°F | Mostly Sunny | 3 to 7 mph NE | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Green Bay, WI
Last spring frost
May 7
First fall frost
Oct 9
Growing season
154 days
Hardiness zone
5b
Explore more for Green Bay, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Green Bay Botanical, Wi (14 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.