September weather forecastAlta Manor, PA
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Alta Manor, Pennsylvania, with an average temperature varying between 52.3°F (11.3°C) and 72.3°F (22.4°C).Temperature
The commencement of September indicates a gentle shift in the average high-temperature, receding from August's moderately hot 79.3°F (26.3°C) to an agreeable 72.3°F (22.4°C). In the month of September, the average temperature in Alta Manor dips to a fresh 52.3°F (11.3°C) during the night.Humidity
The average relative humidity in September is 80%.Rainfall
In September, the rain falls for 13.5 days. Throughout September, 1.81" (46mm) of precipitation is accumulated. In Alta Manor, during the entire year, the rain falls for 165 days and collects up to 25.31" (643mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day 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, sunrise is at 7:09 am and sunset at 6:56 pm EDT.
Sunshine
The average sunshine in September in Alta Manor is 8.4h.UV index
In Alta Manor, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily high UV index of 3 in September leads to these guidelines:
Make use of precautions - It is urged to ward off sun damage. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 24min
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 24min
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).
