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
Afton's transition into September involves a gentle shift in temperature, receding from a moderately hot 78.1°F (25.6°C) in August to a pleasant 72.1°F (22.3°C). Afton's average low-temperature in the month of September is recorded at a fresh 53.1°F (11.7°C).Humidity
In Afton, the average relative humidity in September is 80%.Rainfall
In Afton, in September, it is raining for 10.5 days, with typically 1.22" (31mm) of accumulated precipitation. Throughout the year, there are 127.7 rainfall days, and 17.87" (454mm) of precipitation is accumulated.Snowfall
In Afton, snow does not fall in May through September.Daylight
In Afton, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:30 pm. On the last day of September, sunrise is at 6:53 am and sunset at 6:38 pm CDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The UV index of 4 during September leads to these advisories:
Heed the precautions - It is counselled to guard against solar damage. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Afton?
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?
What time are sunrise and sunset in September?
How many hours of sunshine does Afton have in September?
What is the UV index intensity in September?
Average temperature in September
Afton, WI
- Average high temperature in September: 72.1°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in September: 53.1°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in September
Afton, WI
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Afton, WI
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Afton, WI
- Average humidity in September: 80%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall in September
Afton, WI
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is June (2.76").
The driest months (with the least rainfall) are January and February (0.75").
Average rainfall days in September
Afton, WI
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is June (16.3 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in September
Afton, WI
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.83").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Afton, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Afton, WI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 3min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Afton, WI
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in September
Afton, WI
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Afton, WI
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in September
Afton, WI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Afton, Wisconsin, USA
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