Green Bay, WI Weather & Growing Conditions
Overnight
56°F
Showers And Thunderstorms Likely
A chance of rain showers before 1am, then showers and thunderstorms likely. Cloudy, with a low around 56. East wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Showers And Thunderstorms Likely | 6 mph E | 73% |
| Saturday | 64°F | Rain Showers | 7 to 10 mph E | 79% |
| Saturday Night | 53°F | Rain Showers Likely then Mostly Cloudy | 8 mph NE | 66% |
| Sunday | 67°F | Partly Sunny | 9 to 14 mph NE | 8% |
| Sunday Night | 51°F | Mostly Cloudy | 8 to 13 mph NE | 1% |
| Monday | 62°F | Mostly Cloudy | 8 to 13 mph NE | 4% |
| Monday Night | 49°F | Mostly Cloudy | 7 to 10 mph NE | 4% |
| Tuesday | 62°F | Partly Sunny | 7 to 12 mph ENE | 4% |
| Tuesday Night | 49°F | Partly Cloudy | 3 to 8 mph NE | 6% |
| Wednesday | 64°F | Mostly Sunny | 3 to 8 mph NE | 6% |
| Wednesday Night | 50°F | Partly Cloudy | 5 mph NE | 4% |
| Thursday | 69°F | Mostly Sunny | 5 mph NE | 4% |
| Thursday Night | 51°F | Partly Cloudy | 0 to 3 mph N | 4% |
| Friday | 71°F | Mostly Sunny | 3 mph N | 4% |
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 Sep 19, 2026.