Green Bay, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Green Bay, a city in Brown County, Wisconsin.
Today
64°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy. High near 64, with temperatures falling to around 59 in the afternoon. South southwest wind around 12 mph, with gusts as high as 21 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Green Bay
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Chance Rain Showers | 12 mph SSW | 11% |
| Tonight | 47°F | Chance Rain Showers | 9 mph SW | 37% |
| Thursday | 54°F | Rain Showers Likely | 7 to 14 mph WNW | 86% |
| Thursday Night | 36°F | Chance Rain Showers | 14 mph N | 31% |
| Friday | 46°F | Chance Rain Showers | 7 to 13 mph N | 27% |
| Friday Night | 31°F | Partly Cloudy | 2 to 6 mph N | 0% |
| Saturday | 49°F | Sunny | 3 mph WNW | 0% |
| Saturday Night | 33°F | Mostly Clear | 2 to 6 mph WSW | 5% |
| Sunday | 54°F | Sunny | 6 to 9 mph W | 8% |
| Sunday Night | 34°F | Mostly Clear | 2 to 6 mph W | 0% |
| Monday | 57°F | Mostly Sunny | 2 to 9 mph WSW | 0% |
| Monday Night | 39°F | Partly Cloudy | 7 mph W | 2% |
| Tuesday | 56°F | Mostly Sunny | 5 to 8 mph WNW | 8% |
| Tuesday Night | 36°F | Partly Cloudy | 3 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Green Bay (44.522, -87.987). Updated through the day.
Growing snapshot for Green Bay
Last spring frost
May 7
First fall frost
Oct 9
Growing season
154 days
Hardiness zone
5b
More local growing data for Green Bay: nearby ZIP 54302 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Allouez
Ashwaubenon
Bellevue
De Pere
Denmark
Dyckesville
Greenleaf
Hobart
Howard
Suamico
Wrightstown
Climate data from the nearest NOAA station, Green Bay Botanical, Wi (6.3 mi from Green Bay). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.