September weather forecastAshwaubenon, WI
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Ashwaubenon, Wisconsin, with an average temperature fluctuating between 52.3°F (11.3°C) and 69.6°F (20.9°C).Temperature
Ashwaubenon in September undergoes a slight reduction in the average high-temperature, shifting from August's warm 77°F (25°C) to an agreeable 69.6°F (20.9°C). Ashwaubenon witnesses an average low-temperature of 52.3°F (11.3°C) throughout the month of September.Humidity
In Ashwaubenon, the average relative humidity in September is 79%.Rainfall
In September, the rain falls for 11.6 days. Throughout September, 1.57" (40mm) of precipitation is accumulated. In Ashwaubenon, during the entire year, the rain falls for 130.8 days and collects up to 24.8" (630mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Ashwaubenon, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:15 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:34 pm CDT.
Sunshine
In Ashwaubenon, the average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 3 translates into these guidelines:
Take necessary precautions - Protection from skin and eye injury is mandatory. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ashwaubenon, WI
- Average high temperature in September: 69.6°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 September: 52.3°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 September
Ashwaubenon, 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
Ashwaubenon, WI
- Average wind speed in September: 8.1mph
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 September
Ashwaubenon, WI
- Average humidity in September: 79%
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 September
Ashwaubenon, WI
- Average rainfall in September: 1.57"
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 September
Ashwaubenon, WI
- Average rainfall days in September: 11.6 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 September
Ashwaubenon, WI
- Average snowfall in September: 0"
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 September
Ashwaubenon, WI
- Average snowfall days in September: 0 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 daylight in September /
Average sunshine in September
Ashwaubenon, 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 24min
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 September
Ashwaubenon, WI
- Average sunshine days in September: 17 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 September
Ashwaubenon, WI
- Average UV index in September: 3
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 September
Ashwaubenon, WI
- Average cloud cover in September: 35
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 September
Ashwaubenon, WI
- Average visibility in September: 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).
