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
The arrival of September signals a subtle shift in temperature, down from a moderately hot 81.9°F (27.7°C) in August to a still warm 75.4°F (24.1°C). Eighty Four records a consistent low-temperature of 55.2°F (12.9°C) during September nights.Humidity
The average relative humidity in September is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 9.4 days and typically collects 0.55" (14mm) of precipitation.Snowfall
In Eighty Four, snow does not fall in June through October.Daylight
In Eighty Four, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:48 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:03 pm EDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Eighty Four in September?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Eighty Four have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Eighty Four have in September?
How high is the UV index in September?
Average temperature in September
Eighty Four, PA
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 55.2°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in September
Eighty Four, PA
- Average pressure in September: 30.05"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
Eighty Four, PA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in September
Eighty Four, PA
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Eighty Four, PA
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is July (1.06").
The driest month (with the least rainfall) is September (0.55").
Average rainfall days in September
Eighty Four, PA
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is May (14 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in September
Eighty Four, PA
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.79").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Eighty Four, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Eighty Four, 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 4min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Eighty Four, PA
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (13.5 days).
Average UV index in September
Eighty Four, PA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (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
Eighty Four, PA
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Eighty Four, 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).
Eighty Four, Pennsylvania, USA
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