October weather forecast
Green Bay, WI

The sun setting over Green Bay in Wisconsin
The sun setting over Green Bay in Wisconsin

Weather in October

October, the same as September, in Green Bay, Wisconsin, is a moderate autumn month, with an average temperature varying between 55.8°F (13.2°C) and 41.9°F (5.5°C).

Temperature

In Green Bay, Wisconsin, the average high-temperature in October decreases from an agreeable 69.6°F (20.9°C) in September to a moderate 55.8°F (13.2°C). In Green Bay, Wisconsin, the average low-temperature is 41.9°F (5.5°C).

Humidity

The average relative humidity in October is 78%.

Rainfall

In October, the rain falls for 12.1 days. Throughout October, 2.68" (68mm) of precipitation is accumulated. In Green Bay, during the entire year, the rain falls for 130.8 days and collects up to 24.8" (630mm) of precipitation.

Snowfall

Months with snowfall in Green Bay are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 1 snowfall days, it receives 0.31" (8mm) of snow. In Green Bay, during the entire year, snow falls for 63.7 days and aggregates up to 23.27" (591mm) of snow.

Ocean temperature

In October, the average ocean temperature is 54°F (12.2°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

In October, the average length of the day in Green Bay, Wisconsin, is 10h and 58min.
On the first day of October in Green Bay, sunrise is at 6:50 am and sunset at 6:33 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:42 pm CDT.

Sunshine

The average sunshine in October is 5.2h.

UV index

In October, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 2 in October interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in October in Green Bay?

In Green Bay, Wisconsin, the average relative humidity in October is 78%.

How many days does it rain in October in Green Bay?

In Green Bay, Wisconsin, in October, during 12.1 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

When does it start to snow in Green Bay?

October is the first month it typically snows in Green Bay. Throughout October, in the average 1 snowfall days, it receives 0.31" (8mm) of snow.

What is the water temperature in October in Green Bay?

In Green Bay, Wisconsin, in October, the average water temperature is 54°F (12.2°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in October in Green Bay?

In October, the average day length in Green Bay is 10h and 58min.

When is the sunrise / sunset in October in Green Bay?

On the first day of October, sunrise is at 6:50 am and sunset at 6:33 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:42 pm CDT.

How many hours of sunshine does Green Bay have in October?

In Green Bay, Wisconsin, the average sunshine duration in October is 5.2h.

What is the UV index intensity in October in Green Bay?

In Green Bay, Wisconsin, the average daily maximum UV index in October is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Green Bay, WI

Average temperature in October - Green Bay, WI
  • Average high temperature in October: 55.8°F

The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (22.6°F).

  • Average low temperature in October: 41.9°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

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Average pressure in October
Green Bay, WI

Average pressure in October - Green Bay, WI
  • Average pressure in October: 29.98"Hg

The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in October
Green Bay, WI

Average wind speed in October - Green Bay, WI
  • Average wind speed in October: 9.5mph

The windiest months (with the highest average wind speed) are January and February (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.2mph).

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Average humidity in October
Green Bay, WI

Average humidity in October - Green Bay, WI
  • Average humidity in October: 78%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and May (76%).

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Average rainfall in October
Green Bay, WI

Average rainfall in October - Green Bay, WI
  • Average rainfall in October: 2.68"

The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is January (1.18").

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Average rainfall days in October
Green Bay, WI

Average rainfall days in October - Green Bay, WI
  • Average rainfall days in October: 12.1 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is February (3.7 days).

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Average snowfall in October
Green Bay, WI

Average snowfall in October - Green Bay, WI
  • Average snowfall in October: 0.31"

The month with the highest snowfall is February (5.79").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in October
Green Bay, WI

Average snowfall days in October - Green Bay, WI
  • Average snowfall days in October: 1 days

The month with the highest number of snowfall days is January (15.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in October
Green Bay, WI

Average sea temperature in October - Green Bay, WI
  • Average sea temperature in October: 54°F

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).

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Average daylight in October /
Average sunshine in October
Green Bay, WI

Average daylight in October / Average sunshine in October - Green Bay, WI
  • Average daylight in October: 10h and 58min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in October: 5h and 12min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).

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Average sunshine days in October
Green Bay, WI

Average sunshine days in October - Green Bay, WI
  • Average sunshine days in October: 15.2 days

The months with the most sunshine days are September and November (17 days).
The month with the least sunshine days is April (11.6 days).

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Average UV index in October
Green Bay, WI

Average UV index in October - Green Bay, WI
  • Average UV index in October: 2

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in October
Green Bay, WI

Average cloud cover in October - Green Bay, WI
  • Average cloud cover in October: 47

The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 33).

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Average visibility in October
Green Bay, WI

Average visibility in October - Green Bay, WI
  • Average visibility in October: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).

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