September weather forecastSturgeon Bay, WI
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Sturgeon Bay, Wisconsin, with temperature in the range of an average high of 65.5°F (18.6°C) and an average low of 56.7°F (13.7°C).Temperature
A subtle change in temperatures is noted as August gives way to September, with average highs reducing from an agreeable 72.1°F (22.3°C) to a comfortable 65.5°F (18.6°C). During September, Sturgeon Bay's nighttime temperatures demonstrate a subtle cooling from daytime highs, stabilizing at a mild 56.7°F (13.7°C).Humidity
In September, the average relative humidity is 79%.Rainfall
In Sturgeon Bay, during September, the rain falls for 12.8 days and regularly aggregates up to 2.05" (52mm) of precipitation. In Sturgeon Bay, during the entire year, the rain falls for 130.5 days and collects up to 25" (635mm) of precipitation.Snowfall
June through September are months without snowfall in Sturgeon Bay, Wisconsin.Daylight
In Sturgeon Bay, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:12 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:31 pm CDT.
Sunshine
The average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sturgeon Bay, WI
- Average high temperature in September: 65.5°F
The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is January (24.8°F).
- Average low temperature in September: 56.7°F
The month with the highest average low temperature is August (62.8°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in September
Sturgeon Bay, WI
- Average pressure in September: 30.02"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 September
Sturgeon Bay, WI
- Average wind speed in September: 10.8mph
The windiest month (with the highest average wind speed) is December (13.8mph).
The calmest month (with the lowest average wind speed) is July (8.8mph).
Average humidity in September
Sturgeon Bay, WI
- Average humidity in September: 79%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Sturgeon Bay, WI
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is July (2.99").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in September
Sturgeon Bay, WI
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in September
Sturgeon Bay, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Sturgeon Bay, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sturgeon Bay, WI
- Average daylight in September: 12h and 30min
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 September: 8h and 48min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in September
Sturgeon Bay, WI
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is March (17.3 days).
The month with the least sunshine days is August (12.3 days).
Average UV index in September
Sturgeon Bay, WI
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, March and December (UV index 1).
Average cloud cover in September
Sturgeon Bay, WI
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Sturgeon Bay, WI
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
