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, Coolidge Hollow's average high-temperature slightly adjusts, moderately receding from August's moderately hot 77°F (25°C) to an agreeable 70°F (21.1°C). During September, Coolidge Hollow observes a consistent average nighttime temperature of 49.8°F (9.9°C).Humidity
In Coolidge Hollow, Pennsylvania, the average relative humidity in September is 81%.Rainfall
In September, in Coolidge Hollow, the rain falls for 13.5 days. Throughout September, 2.17" (55mm) of precipitation is accumulated. Throughout the year, there are 175.2 rainfall days, and 30.39" (772mm) of precipitation is accumulated.Snowfall
In Coolidge Hollow, Pennsylvania, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:42 pm. On the last day of September, sunrise is at 7:05 am and sunset at 6:52 pm EDT.
Sunshine
In Coolidge Hollow, the average sunshine in September is 8.4h.UV index
In Coolidge Hollow, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. When the Sun is at its strongest around midday, find shade and limit exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Coolidge Hollow?
What is the average humidity in September in Coolidge Hollow?
How many days does it rain in September in Coolidge Hollow?
When it does not snow in Coolidge Hollow?
Does it snow in Coolidge Hollow in September?
How many hours of daylight does Coolidge Hollow have in September?
What time are sunrise and sunset in September in Coolidge Hollow?
How many hours of sunshine does Coolidge Hollow have in September?
What is the UV index intensity in September in Coolidge Hollow?
Average temperature in September
Coolidge Hollow, PA
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in September: 49.8°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in September
Coolidge Hollow, PA
- Average pressure in September: 30.07"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Coolidge Hollow, PA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Coolidge Hollow, PA
- Average humidity in September: 81%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is June (78%).
Average rainfall in September
Coolidge Hollow, PA
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is April (3.35").
The driest month (with the least rainfall) is November (1.97").
Average rainfall days in September
Coolidge Hollow, PA
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is February (8.5 days).
Average snowfall in September
Coolidge Hollow, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Coolidge Hollow, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Coolidge Hollow, PA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- 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 December (Average sunshine: 3h and 6min).
Average sunshine days in September
Coolidge Hollow, PA
- Average sunshine days in September: 14 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is February (7.4 days).
Average UV index in September
Coolidge Hollow, PA
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Coolidge Hollow, PA
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in September
Coolidge Hollow, 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).
Coolidge Hollow, Pennsylvania, USA
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