September weather forecastDeer Lake, PA
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Deer Lake, Pennsylvania, with an average temperature fluctuating between 53.8°F (12.1°C) and 73.2°F (22.9°C).Temperature
The shift from August to September coincides with a small decrease in the average high-temperature, down to a pleasant 73.2°F (22.9°C) from a warm 79.7°F (26.5°C). During September, the average low-temperature is a cool 53.8°F (12.1°C).Humidity
The average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 10.6 days and accumulates 1.26" (32mm) of precipitation.Snowfall
In Deer Lake, snow does not fall in June through September.Daylight
In Deer Lake, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:35 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:47 pm EDT.
Sunshine
In Deer Lake, the average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Deer Lake, PA
- Average high temperature in September: 73.2°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 (33.4°F).
- Average low temperature in September: 53.8°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
Deer Lake, PA
- Average pressure in September: 30.06"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
Deer Lake, PA
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Deer Lake, PA
- Average humidity in September: 80%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (77%).
Average rainfall in September
Deer Lake, PA
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is August (2.44").
The driest month (with the least rainfall) is September (1.26").
Average rainfall days in September
Deer Lake, PA
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (7 days).
Average snowfall in September
Deer Lake, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Deer Lake, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Deer Lake, PA
- Average daylight in September: 12h and 30min
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 18min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 30min).
Average sunshine days in September
Deer Lake, PA
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is January (18.8 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in September
Deer Lake, PA
- Average UV index in September: 4
The month with the highest UV index is July (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
Deer Lake, PA
- Average cloud cover in September: 38
The months with the most cloud cover are February and December (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Deer Lake, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, June, July and November (6mi).
The months with the lowest visibility are February, May, August, September, October and December (5mi).
