Green Bay, WI Weather & Growing Conditions
Tonight
57°F
Rain Showers
Rain showers likely before 8pm, then rain showers and areas of fog. Cloudy, with a low around 57. South southeast wind around 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Rain Showers | 13 mph SSE | 84% |
| Wednesday | 64°F | Rain Showers | 12 to 15 mph S | 87% |
| Wednesday Night | 46°F | Rain Showers Likely | 14 mph SW | 66% |
| Thursday | 53°F | Rain Showers | 9 to 15 mph WNW | 91% |
| Thursday Night | 37°F | Chance Rain Showers | 18 mph N | 52% |
| Friday | 46°F | Slight Chance Rain Showers then Mostly Cloudy | 13 to 18 mph N | 24% |
| Friday Night | 33°F | Mostly Cloudy | 5 to 9 mph NNW | 7% |
| Saturday | 49°F | Mostly Sunny | 6 mph W | 3% |
| Saturday Night | 34°F | Partly Cloudy | 3 to 7 mph WSW | 9% |
| Sunday | 55°F | Mostly Sunny | 7 to 10 mph W | 12% |
| Sunday Night | 35°F | Mostly Clear | 8 mph WNW | 6% |
| Monday | 55°F | Mostly Sunny | 7 to 12 mph WSW | 2% |
| Monday Night | 39°F | Partly Cloudy | 10 mph WSW | 1% |
| Tuesday | 55°F | Mostly Sunny | 7 to 10 mph WNW | 0% |
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 Nov 4, 2026.