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
With the onset of September, Castanea experiences a modest temperature adjustment, with the average high-temperature gently receding from a moderately hot 79.5°F (26.4°C) in August to a pleasant 72.3°F (22.4°C). Throughout September, an average low-temperature of 51.1°F (10.6°C) is experienced.Humidity
The average relative humidity in September is 80%.Rainfall
In September, the rain falls for 13 days. Throughout September, 2.4" (61mm) of precipitation is accumulated. Throughout the year, in Castanea, there are 174.7 rainfall days, and 32.09" (815mm) of precipitation is accumulated.Snowfall
In Castanea, snow does not fall in June through September.Daylight
In Castanea, the average length of the day in September is 12h and 28min.On the first day of September in Castanea, sunrise is at 6:37 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:52 pm EDT.
Sunshine
The average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September in Castanea, Pennsylvania, is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 3 during September leads to these advisories:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
What are the temperatures in Castanea in September?
What is the average humidity in September in Castanea?
How many days does it rain in September in Castanea?
When it does not snow in Castanea?
Does it snow in Castanea in September?
What is the average length of the day in September in Castanea?
When is the sunrise / sunset in September in Castanea?
How long on average sun shines in September in Castanea?
How high is the UV index in September in Castanea?
Average temperature in September
Castanea, PA
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in September
Castanea, PA
- Average pressure in September: 30.07"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Castanea, PA
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are January and April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Castanea, PA
- Average humidity in September: 80%
The months with the highest relative humidity are February and December (84%).
The months with the lowest relative humidity are April, June and July (77%).
Average rainfall in September
Castanea, PA
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is April (3.54").
The driest month (with the least rainfall) is November (2.09").
Average rainfall days in September
Castanea, PA
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in September
Castanea, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Castanea, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Castanea, PA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in September
Castanea, PA
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (8.8 days).
Average UV index in September
Castanea, PA
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Castanea, PA
- Average cloud cover in September: 43
The months with the most cloud cover are January and December (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in September
Castanea, PA
- Average visibility in September: 4mi
The months with the highest visibility are January, March, April, May, June, July, August, October and November (5mi).
The months with the lowest visibility are February, September and December (4mi).
Castanea, Pennsylvania, USA
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