Green Bay
Wisconsin, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Green Bay, WI

An aerial panorama of the sun setting over Green Bay in Wisconsin
An aerial panorama of the sun setting over Green Bay in Wisconsin
January, the same as December, in Green Bay, Wisconsin, is another subzero cold winter month, with average temperature fluctuating between 9°F (-12.8°C) and 24.3°F (-4.3°C). The coldest month is January, with an average high-temperature of 24.3°F (-4.3°C) and an average low-temperature of 9°F (-12.8°C). Weather in January »
February, the last month of the winter, in Green Bay, is also a subzero cold month, with average temperature varying between 28.2°F (-2.1°C) and 12.4°F (-10.9°C). In February, the average high-temperature is almost the same as in January - a still subzero cold 28.2°F (-2.1°C). Weather in February »

The first month of the spring, March, is a cold month in Green Bay, Wisconsin, with average temperature ranging between min 22.5°F (-5.3°C) and max 39.2°F (4°C). In March, the average high-temperature rises, from a freezing cold 28.2°F (-2.1°C) in February, to a wintry 39.2°F (4°C). Weather in March »

April is a fresh spring month in Green Bay, Wisconsin, with average temperature ranging between min 33.8°F (1°C) and max 54°F (12.2°C). In Green Bay, the average high-temperature in April significantly increases, from a cold 39.2°F (4°C) in March, to a fresh 54°F (12.2°C). Weather in April »

May, the last month of the spring, in Green Bay, is an enjoyable month, with temperature in the range of an average high of 66°F (18.9°C) and an average low of 44.1°F (6.7°C). In Green Bay, the average high-temperature rises, from a cool 54°F (12.2°C) in April, to a comfortable 66°F (18.9°C). Weather in May »

The first month of the summer, June, is a warm month in Green Bay, Wisconsin, with average temperature ranging between max 75.4°F (24.1°C) and min 54.1°F (12.3°C). In Green Bay, the average high-temperature increases, from an enjoyable 66°F (18.9°C) in May, to a moderately hot 75.4°F (24.1°C). Weather in June »

July, the same as June, is another warm summer month in Green Bay, Wisconsin, with average temperature fluctuating between 58.5°F (14.7°C) and 79.9°F (26.6°C). July is the warmest month, with an average high-temperature of 79.9°F (26.6°C) and an average low-temperature of 58.5°F (14.7°C). Weather in July »

August, the last month of the summer, in Green Bay, is also a moderately hot month, with average temperature varying between 56.8°F (13.8°C) and 77.7°F (25.4°C). In Green Bay, the average high-temperature in August is practically the same as in July - a still warm 77.7°F (25.4°C). Weather in August »

September, the first month of the autumn, in Green Bay, is still a pleasant month, with temperature in the range of an average low of 48.6°F (9.2°C) and an average high of 70°F (21.1°C). In September, the average high-temperature slightly decreases, from a moderately hot 77.7°F (25.4°C) in August, to an agreeable 70°F (21.1°C). Weather in September »

October, the same as September, in Green Bay, Wisconsin, is another mild autumn month, with average temperature varying between 37.8°F (3.2°C) and 56.7°F (13.7°C). In Green Bay, the average high-temperature drops, from an agreeable 70°F (21.1°C) in September, to a moderate 56.7°F (13.7°C). Weather in October »

November, the last month of the autumn, in Green Bay, is also a wintry month, with average temperature varying between 27°F (-2.8°C) and 42.3°F (5.7°C). In Green Bay, the average high-temperature in November drops, from a moderate 56.7°F (13.7°C) in October, to a cold 42.3°F (5.7°C). Weather in November »

The first month of the winter, December, is also a subzero cold month in Green Bay, Wisconsin, with average temperature varying between 14.4°F (-9.8°C) and 28.6°F (-1.9°C). In December, the average high-temperature decreases, from a cold 42.3°F (5.7°C) in November, to a subzero cold 28.6°F (-1.9°C). Weather in December »

What is the coldest month in Green Bay?

With an average high-temperature of 24.3°F (-4.3°C) and an average low-temperature of 9°F (-12.8°C), January is the coldest month.

How many days does it rain in Green Bay?

In Green Bay, during the entire year, the rain falls for 123 days and collects up to 29.5" (749.9mm) of precipitation.

When does it snow in Green Bay?

Months with snowfall in Green Bay, Wisconsin, are January through May, October through December.

How much does it snow in Green Bay?

Throughout the year, in Green Bay, Wisconsin, there are 40.2 snowfall days, and 51.4" (1305.6mm) of snow is accumulated.

What are the months with the lowest UV index in Green Bay?

Months with the lowest UV index in Green Bay are January and December, with an average maximum UV index of 1.

What is the driest month in Green Bay?

February is the month with the least rainfall. Rain falls for 8.4 days and accumulates 1.1" (28.2mm) of precipitation.

When is the ocean coldest in Green Bay?

The month with the coldest seawater is February, with an average ocean temperature of 36.1°F (2.3°C).

What is the least humid month in Green Bay?

May is the least humid month in Green Bay, Wisconsin, with an average relative humidity of 65.9%.

What is the wettest month in Green Bay?

The month with the most rainfall is June when the rain falls for 10.3 days and typically aggregates up to 3.9" (98.6mm) of precipitation.

When it does not snow in Green Bay?

In Green Bay, Wisconsin, snow does not fall in June through September.

When are the longest days in Green Bay?

The month with the longest days in Green Bay is June, with an average of 15.5h of daylight.

What are the months with the most sunshine in Green Bay?

Months with the most sunshine are June and July, with an average of 10.1h of sunshine.

What is the month with the highest UV index in Green Bay?

June and July, with an average maximum UV index of 8, are months with the highest UV index.

What is the warmest month in Green Bay?

July is the warmest month, with an average high-temperature of 79.9°F (26.6°C) and an average low-temperature of 58.5°F (14.7°C).

What month is the ocean warmest in Green Bay?

The month with the warmest seawater is August, with an average ocean temperature of 67.6°F (19.8°C).

What is the month with the least sunshine in Green Bay?

Months with the least sunshine are November and December, with an average of 3.6h of sunshine.

What is the most humid month in Green Bay?

The most humid month in Green Bay, Wisconsin, is December, with an average relative humidity of 77.3%.

When does it snow the most in Green Bay?

The month with the most snowfall in Green Bay is December when snow falls for 9.2 days and typically aggregates up to 13.1" (332.7mm) of snow.

What is the month with the shortest days in Green Bay?

The month with the shortest days in Green Bay is December, with an average of 8.9h of daylight.
Average humidity - Green Bay, WI
Average rainfall - Green Bay, WI
Average rainfall days - Green Bay, WI

The month with the highest number of rainy days is May (11.4 days).
The month with the lowest number of rainy days is February (8.4 days).

Average snowfall - Green Bay, WI
Average snowfall days - Green Bay, WI

The month with the highest number of snowfall days is January (9.6 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average sea temperature - Green Bay, WI

The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is February (36.1°F).

Average daylight / Average sunshine - Green Bay, WI

The month with the longest days is June (Average daylight: 15.5h).
The month with shortest days is December (Average daylight: 8.9h).

Months with most sunshine are June and July (Average sunshine: 10.1h).
Months with least sunshine are November and December (Average sunshine: 3.6).