Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a moderately hot 75.7°F (24.3°C) in August to a pleasant 68.4°F (20.2°C). Throughout the month of September, Athens witnesses an average temperature of 48.9°F (9.4°C).Humidity
In September, the average relative humidity is 81%.Rainfall
In Athens, in September, during 12.5 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. Throughout the year, there are 138.8 rainfall days, and 24.84" (631mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September, sunrise is at 6:23 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:42 pm CDT.
Sunshine
The average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 3 in September translates into these instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September in Athens?
How long on average sun shines in September?
What is the UV index reading in September in Athens?
Average temperature in September
Athens, WI
- Average high temperature in September: 68.4°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (18.5°F).
- Average low temperature in September: 48.9°F
The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).
Average pressure in September
Athens, WI
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Athens, WI
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Athens, WI
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Athens, WI
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is June (3.31").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in September
Athens, WI
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (4.2 days).
Average snowfall in September
Athens, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (8.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Athens, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Athens, WI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Athens, WI
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is September (14.9 days).
The month with the least sunshine days is April (9.8 days).
Average UV index in September
Athens, 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, March, November and December (UV index 1).
Average cloud cover in September
Athens, WI
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in September
Athens, WI
- Average visibility in September: 5mi
The months with the highest visibility are April, May and June (6mi).
The months with the lowest visibility are January and February (4mi).
Athens, Wisconsin, USA
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