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 arrival of September, Arrowhead Lake experiences a modest decline in average high-temperatures, transitioning from a moderately hot 77.5°F (25.3°C) in August to an agreeable 71.1°F (21.7°C). In the month of September, Arrowhead Lake records a consistent average low-temperature of 52.3°F (11.3°C).Humidity
In September, the average relative humidity is 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 8.8 days and typically collects 0.51" (13mm) of precipitation.Snowfall
In Arrowhead Lake, snow does not fall in June through September.Daylight
In Arrowhead Lake, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:29 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:45 pm EDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
The average daily maximum UV index in September in Arrowhead Lake is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. To avoid the Sun's strongest rays, limit exposure around the mid-day period. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
What is the driest month?
How much does it rain in Arrowhead Lake in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Arrowhead Lake have in September?
How high is the UV index in September?
Average temperature in September
Arrowhead Lake, PA
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in September: 52.3°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 (18.7°F).
Average pressure in September
Arrowhead Lake, PA
- Average pressure in September: 30.06"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
Arrowhead Lake, PA
- Average wind speed in September: 5.8mph
The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Arrowhead Lake, 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, June and July (78%).
Average rainfall in September
Arrowhead Lake, PA
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is July (1.22").
The driest month (with the least rainfall) is September (0.51").
Average rainfall days in September
Arrowhead Lake, PA
- Average rainfall days in September: 8.8 days
The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in September
Arrowhead Lake, PA
- Average snowfall in September: 0"
The months with the highest snowfall are January, February and March (1.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Arrowhead Lake, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Arrowhead Lake, 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Arrowhead Lake, PA
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (12.5 days).
Average UV index in September
Arrowhead Lake, PA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Arrowhead Lake, PA
- Average cloud cover in September: 43
The months with the most cloud cover are February and December (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in September
Arrowhead Lake, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Arrowhead Lake, Pennsylvania, USA
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