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, Crystal Spring's average high-temperature slightly adjusts, moderately receding from August's warm 79.9°F (26.6°C) to a pleasant 72.9°F (22.7°C). Crystal Spring in September experiences a low-temperature average of 52.9°F (11.6°C).Humidity
In September, the average relative humidity in Crystal Spring is 80%.Rainfall
In Crystal Spring, in September, during 11.2 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. In Crystal Spring, during the entire year, the rain falls for 126 days and collects up to 15.47" (393mm) of precipitation.Snowfall
May through September are months without snowfall in Crystal Spring.Daylight
The average length of the day in September in Crystal Spring is 12h and 26min.On the first day of September in Crystal Spring, sunrise is at 6:41 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:56 pm EDT.
Sunshine
In September, the average sunshine in Crystal Spring, Pennsylvania, is 8.3h.UV index
In September, the average daily maximum UV index in Crystal Spring is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Frequently asked questions
What are the temperatures in Crystal Spring in September?
What is the average humidity in September in Crystal Spring?
How many days does it rain in September in Crystal Spring?
When it does not snow in Crystal Spring?
Does it snow in Crystal Spring in September?
What is the average length of the day in September in Crystal Spring?
What time are sunrise and sunset in September in Crystal Spring?
How many hours of sunshine does Crystal Spring have in September?
What is the UV index reading in September in Crystal Spring?
Average temperature in September
Crystal Spring, PA
- Average high temperature in September: 72.9°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 (32.7°F).
- Average low temperature in September: 52.9°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in September
Crystal Spring, PA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Crystal Spring, PA
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Crystal Spring, PA
- Average humidity in September: 80%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in September
Crystal Spring, PA
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is May (1.81").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in September
Crystal Spring, PA
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (6 days).
Average snowfall in September
Crystal Spring, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Crystal Spring, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Crystal Spring, PA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- 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 January (Average sunshine: 4h and 12min).
Average sunshine days in September
Crystal Spring, PA
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is December (20.2 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in September
Crystal Spring, PA
- 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, February, March, November and December (UV index 2).
Average cloud cover in September
Crystal Spring, PA
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in September
Crystal Spring, PA
- Average visibility in September: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Crystal Spring, Pennsylvania, USA
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