Green Bay, WI Weather & Growing Conditions
Today
65°F
Rain Showers
Rain showers and patchy fog. Mostly cloudy. High near 65, with temperatures falling to around 59 in the afternoon. South wind 8 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 65°F | Rain Showers | 8 to 12 mph S | 85% |
| Tonight | 46°F | Chance Rain Showers | 7 to 10 mph SW | 50% |
| Thursday | 54°F | Rain Showers Likely | 7 to 13 mph WNW | 69% |
| Thursday Night | 35°F | Chance Rain Showers | 14 mph N | 27% |
| Friday | 47°F | Chance Rain Showers | 6 to 13 mph N | 25% |
| Friday Night | 30°F | Partly Cloudy | 5 mph N | 0% |
| Saturday | 49°F | Sunny | 5 mph WNW | 0% |
| Saturday Night | 34°F | Mostly Clear | 2 to 7 mph WSW | 5% |
| Sunday | 54°F | Sunny | 7 to 10 mph W | 8% |
| Sunday Night | 35°F | Mostly Clear | 6 mph W | 0% |
| Monday | 57°F | Mostly Sunny | 3 to 10 mph WSW | 0% |
| Monday Night | 39°F | Partly Cloudy | 5 to 8 mph W | 2% |
| Tuesday | 56°F | Mostly Sunny | 5 to 8 mph WNW | 9% |
| Tuesday Night | 37°F | Partly Cloudy | 3 mph NW | 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 (2.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.