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 warm 79.3°F (26.3°C) in August to an agreeable 72.3°F (22.4°C). Alta Manor reports an average nighttime low-temperature of 52.3°F (11.3°C) in September.Humidity
The average relative humidity in September in Alta Manor, Pennsylvania, is 80%.Rainfall
In Alta Manor, in September, it is raining for 13.5 days, with typically 1.81" (46mm) of accumulated precipitation. In Alta Manor, during the entire year, the rain falls for 165 days and collects up to 25.31" (643mm) of precipitation.Snowfall
In Alta Manor, snow does not fall in June through September.Daylight
In Alta Manor, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:45 pm. On the last day of September, in Alta Manor, sunrise is at 7:09 am and sunset at 6:56 pm EDT.
Sunshine
In Alta Manor, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September in Alta Manor is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 3 during September translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. Avoiding the Sun during its peak radiation time around midday is a healthy practice. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Frequently asked questions
What is the usual temperature for Alta Manor in September?
What is the average humidity in September in Alta Manor?
How much does it rain in Alta Manor in September?
When it does not snow in Alta Manor?
Does it snow in Alta Manor in September?
What is the average length of the day in September in Alta Manor?
When are sunrise and sunset in September in Alta Manor?
How many hours of sunshine does Alta Manor have in September?
What is the UV index reading in September in Alta Manor?
Average temperature in September
Alta Manor, PA
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in September
Alta Manor, 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
Alta Manor, PA
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Alta Manor, PA
- Average humidity in September: 80%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April and July (77%).
Average rainfall in September
Alta Manor, PA
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is November (1.57").
Average rainfall days in September
Alta Manor, PA
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (9.8 days).
Average snowfall in September
Alta Manor, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.28").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Alta Manor, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Alta Manor, 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 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 January (Average sunshine: 3h and 30min).
Average sunshine days in September
Alta Manor, PA
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is November (15.3 days).
The month with the least sunshine days is February (8.6 days).
Average UV index in September
Alta Manor, PA
- Average UV index in September: 3
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
Alta Manor, PA
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in September
Alta Manor, PA
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Alta Manor, Pennsylvania, USA
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