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
September brings a slight decrease in the average high-temperature, shifting from a warm 76.6°F (24.8°C) in August to a pleasant 68.5°F (20.3°C). In the month of September, Athelstane witnesses a consistent average low-temperature of 49.8°F (9.9°C).Humidity
In September, the average relative humidity in Athelstane is 80%.Rainfall
In September, the rain falls for 11 days. Throughout September, 1.77" (45mm) of precipitation is accumulated. In Athelstane, during the entire year, the rain falls for 122.9 days and collects up to 21.34" (542mm) of precipitation.Snowfall
June through September are months without snowfall in Athelstane.Daylight
The average length of the day in September in Athelstane is 12h and 31min.On the first day of the month, sunrise is at 6:14 am and sunset at 7:29 pm. On the last day of September, in Athelstane, sunrise is at 6:50 am and sunset at 6:33 pm CDT.
Sunshine
In September, the average sunshine in Athelstane is 8.3h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 3 during September translates into the following guidance:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What are the temperatures in Athelstane in September?
What is the average humidity in September in Athelstane?
How much does it rain in Athelstane in September?
When it does not snow in Athelstane?
Does it snow in Athelstane in September?
How many hours of daylight does Athelstane have in September?
When are sunrise and sunset in September in Athelstane?
How long on average sun shines in September in Athelstane?
What is the UV index reading in September in Athelstane?
Average temperature in September
Athelstane, WI
- Average high temperature in September: 68.5°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (21.6°F).
- Average low temperature in September: 49.8°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in September
Athelstane, WI
- Average pressure in September: 30.01"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
Athelstane, WI
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is April (8.4mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Athelstane, WI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (73%).
Average rainfall in September
Athelstane, WI
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is June (2.6").
The driest months (with the least rainfall) are January and February (0.87").
Average rainfall days in September
Athelstane, WI
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in September
Athelstane, WI
- Average snowfall in September: 0"
The month with the highest snowfall is December (6.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Athelstane, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Athelstane, 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 2min
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 18min).
Average sunshine days in September
Athelstane, WI
- Average sunshine days in September: 16.9 days
The months with the most sunshine days are September and December (16.9 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in September
Athelstane, 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, March and November (UV index 1).
Average cloud cover in September
Athelstane, WI
- Average cloud cover in September: 39
The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Athelstane, WI
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, March, July, August, September and December (5mi).
Athelstane, Wisconsin, USA
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