Green Bay, WI Weather & Growing Conditions
Today
83°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of rain showers between 2pm and 4pm, then a chance of showers and thunderstorms. Partly sunny. High near 83, with temperatures falling to around 81 in the afternoon. Heat index values as high as 86. Southwest wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 8 to 13 mph SW | 39% |
| Tonight | 63°F | Chance Showers And Thunderstorms | 7 mph NW | 65% |
| Wednesday | 77°F | Slight Chance Rain Showers then Partly Sunny | 3 mph ENE | 16% |
| Wednesday Night | 57°F | Slight Chance Rain Showers | 5 mph SSE | 7% |
| Thursday | 81°F | Sunny | 1 to 5 mph S | 3% |
| Thursday Night | 60°F | Mostly Clear | 6 mph SSW | 2% |
| Friday | 84°F | Sunny | 5 to 12 mph SW | 1% |
| Friday Night | 65°F | Mostly Clear | 10 mph SW | 9% |
| Saturday | 85°F | Mostly Sunny | 7 to 10 mph SW | 14% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 6 to 10 mph SSW | 44% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 6 to 9 mph WSW | 44% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 5 to 8 mph W | 45% |
| Monday | 81°F | Chance Showers And Thunderstorms | 6 mph SSW | 33% |
| Monday Night | 63°F | Chance Showers And Thunderstorms | 6 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 6
First fall frost
Oct 12
Growing season
158 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, Denmark Wwtp, Wi (9.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.