Best Time to Visit Green Bay
Best time: Jun, Jul, Aug, Sep.
Jul is warmest (28.1°C high); Jun is rainiest (88 mm).
Green Bay weather by month
| Month | High °C | Low °C | Rain mm | Sun hrs |
|---|---|---|---|---|
| Jan | -3.8 | -13.3 | 35 | 2.2 |
| Feb | -0.8 | -10.8 | 25 | 3.5 |
| Mar | 4.9 | -4.9 | 57 | 5.5 |
| Apr | 12.6 | 1.4 | 66 | 7.4 |
| May | 20.2 | 7.3 | 77 | 8.7 |
| Jun | 25.5 | 12.7 | 88 | 9.7 |
| Jul | 28.1 | 15.6 | 88 | 9.7 |
| Aug | 26.7 | 14.7 | 88 | 8.3 |
| Sep | 22 | 10.2 | 82 | 6.4 |
| Oct | 15 | 4.2 | 55 | 4 |
| Nov | 6.3 | -2.4 | 56 | 2.3 |
| Dec | -1 | -9.4 | 37 | 1.8 |
Average high temperature
Best months by activity
Overall: JunJulAugSep
Beaches: JulAugJun
Hiking: MayOctJunApr
Sightseeing: MayJunJulAug
Green Bay quick facts
What to pack
Cold months (Jan, Feb, Mar, Apr, Nov, Dec): warm layers and a coat.
Frequently asked questions
When is the best time to visit Green Bay?
Jun, Jul, Aug, Sep.
What is the rainiest month?
Jun, about 88 mm.
What is the warmest month?
Jul, with average highs of 28.1°C.
Where to stay
See Green Bay hotels · Book Green Bay tours & activities
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Climate data: Open-Meteo Historical (ERA5), 1991–2020 climate normals.
Licensed under CC BY 4.0.
Open-Meteo.