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 commencement of September, Castle Rocks records a moderate temperature decline, with the average high easing from August's moderately hot 79.2°F (26.2°C) to a pleasant 72.3°F (22.4°C). Throughout September, Castle Rocks records an average temperature of 51.1°F (10.6°C) at night.Humidity
The average relative humidity in September is 80%.Rainfall
In Castle Rocks, during September, the rain falls for 12.9 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Castle Rocks, during the entire year, the rain falls for 181 days and collects up to 33.07" (840mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:36 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:52 pm EDT.
Sunshine
In Castle Rocks, the average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
When it does not snow in Castle Rocks?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September in Castle Rocks?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Castle Rocks, PA
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (30.7°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 (18.7°F).
Average pressure in September
Castle Rocks, 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 (29.94"Hg).
Average wind speed in September
Castle Rocks, PA
- Average wind speed in September: 5.3mph
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
Castle Rocks, 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 and July (77%).
Average rainfall in September
Castle Rocks, PA
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is April (3.58").
The driest month (with the least rainfall) is November (2.17").
Average rainfall days in September
Castle Rocks, PA
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is January (10.8 days).
Average snowfall in September
Castle Rocks, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.05").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Castle Rocks, 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
Castle Rocks, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Castle Rocks, PA
- Average sunshine days in September: 15 days
The month with the most sunshine days is September (15 days).
The month with the least sunshine days is February (8.5 days).
Average UV index in September
Castle Rocks, PA
- Average UV index in September: 4
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
Castle Rocks, PA
- Average cloud cover in September: 41
The months with the most cloud cover are January, February and December (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
Castle Rocks, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Castle Rocks, Pennsylvania, USA
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