Green Bay, WI Weather & Growing Conditions
Today
84°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 3pm. Partly sunny. High near 84, with temperatures falling to around 81 in the afternoon. Heat index values as high as 88. Southwest wind 8 to 12 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Partly Sunny then Chance Showers And Thunderstorms | 8 to 12 mph SW | 45% |
| Tonight | 64°F | Chance Showers And Thunderstorms | 2 to 7 mph W | 46% |
| Wednesday | 78°F | Chance Showers And Thunderstorms then Partly Sunny | 3 mph NNW | 26% |
| Wednesday Night | 58°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Thursday | 82°F | Mostly Sunny | 0 to 5 mph SSW | 0% |
| Thursday Night | 61°F | Mostly Clear | 5 mph SSW | 0% |
| Friday | 84°F | Sunny | 2 to 10 mph SSW | 2% |
| Friday Night | 66°F | Mostly Clear | 6 to 10 mph SW | 9% |
| Saturday | 86°F | Mostly Sunny | 6 to 9 mph SW | 14% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 3 to 8 mph SSW | 44% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 5 to 8 mph WSW | 44% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 2 to 7 mph W | 44% |
| Monday | 82°F | Chance Showers And Thunderstorms | 2 to 6 mph S | 33% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 5 mph NNE | 37% |
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 (6.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.