October weather forecastGreen Bay, WI
October
Weather in October
October witnesses a noticeable drop in temperature, and the vibrant hues of fall are in full display in Green Bay. With decreasing daylight hours, the longer and cooler nights make their presence felt. The weather during October is notorious for its unpredictability with temperatures oscillating between highs of 55.8°F (13.2°C) and lows around 41.9°F (5.5°C). The fall foliage, coupled with the crisp autumn air, paints a picturesque view, making Green Bay a sight to behold. So, while there is a nip in the air, there is an undeniable charm that October carries with its beautiful blend of warm autumn hues and mild sunshine.Temperature
Green Bay's October weather shows a moderate shift in high-temperatures, falling from September's agreeable 69.6°F (20.9°C) to a mild 55.8°F (13.2°C). October nights experience a consistent temperature drop to a cold 41.9°F (5.5°C).Humidity
In Green Bay, the average relative humidity in October is 78%.Rainfall
In Green Bay, in October, it is raining for 12.1 days, with typically 2.68" (68mm) of accumulated precipitation. Throughout the year, there are 130.8 rainfall days, and 24.8" (630mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 1 snowfall days, it receives 0.31" (8mm) of snow. Throughout the year, there are 63.7 snowfall days, and 23.27" (591mm) of snow is accumulated.Ocean temperature
In October, the average ocean temperature in Green Bay is 54°F (12.2°C).Note: With the appropriate swimsuit, one can swim in 54°F (12.2°C) even if temperatures dip below 50°F (10°C); otherwise, be ready for cold shock and breath issues. A fleeting swim around 55.4°F (13°C) is distressing.
Daylight
In Green Bay, the average length of the day in October is 10h and 58min.On the first day of the month, sunrise is at 6:50 am and sunset at 6:32 pm. On the last day of October, sunrise is at 7:29 am and sunset at 5:42 pm CDT.
Sunshine
The average sunshine in October is 5.2h.UV index
In Green Bay, Wisconsin, the average daily maximum UV index in October is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 2 during October translates into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
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).
Average daylight in October /
Average sunshine in October
Green Bay, WI
- Average daylight in October: 11h and 0min
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).
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).
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).
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).
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).
