Green Bay (WI) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Green Bay.
Climate overview of Green Bay
Green Bay, in Wisconsin, United States, experiences a climate with strong seasonal contrasts. Summers can be warm and comfortable, while winters are often long and very cold, with snowfall being common. Precipitation stays at a moderate level across the year. These shifts create distinct seasons that shape local life, from boating and festivals in summer to ice fishing and snow-covered landscapes in winter. Now, let’s explore all the climate details to give you a complete picture.
Green Bay Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Green Bay - and find the best time to visit.
Monthly Temperature in Green Bay
In Green Bay, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 27°C (81°F) in July to a very cold -3°C (27°F) in the coolest month, January.
Nights vary from 15°C (59°F) in July to around -12°C (10°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Green Bay
On average, Green Bay receives a reasonable amount of rain/snowfall, with an annual precipitation of 791 mm (31 in). The climate in Green Bay shows significant variation throughout the year. Expect moderate rainfall in June, the wettest month, with an average of 93 mm (3.7 in) of precipitation over 12 rainy days.
In contrast, the driest month February offers drier and sunnier days, with around 33 mm (1.3 in) of snowfall over 8 snowy days. For more details, please visit our Green Bay Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Green Bay
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Fewer rainy days: January, February, March, August and November
- Seasonal pattern: A distinct dry season from January to February, with warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -12°C (10°F).
Frequently asked questions about the climate in Green Bay
What is the best time to visit Green Bay?
June, July, August and September typically offer the most optimal weather in Green Bay. In contrast, January, February, March, November and December tend to have less optimal conditions. Green Bay has a distinct dry season from January to February, with warm summers and very cold winters.
What temperatures can I expect in Green Bay?
Daytime highs range from -3°C (27°F) in January to 27°C (81°F) in July. Nighttime lows range from -12°C (10°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Green Bay get?
Annual rainfall is around 791 mm (31 in). June is the wettest month with 93 mm (3.7 in), while February is the driest with 33 mm (1.3 in).
Green Bay 3-Day Forecast
Green Bay on the map
Green Bay is highlighted - select any city to see its climate.
Popular this month
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