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 onset of September aligns with a soft reduction in the average high-temperature, gently falling from a moderately hot 26.3°C (79.3°F) in August to an agreeable 22.7°C (72.9°F). The average low-temperature of 12.1°C (53.8°F) is witnessed in Harpers during September.Humidity
The average relative humidity in September in Harpers is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 45mm (1.77") of precipitation.Snowfall
In Harpers, snow does not fall in June through September.Daylight
In Harpers, Pennsylvania, the average length of the day in September is 12h and 27min.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
The average sunshine in September in Harpers is 8.7h.UV index
In Harpers, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 4 in September translates into this advice:
Guard yourself - Avoiding sunburn is suggested. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
What is the usual temperature for Harpers in September?
What is the average humidity in September in Harpers?
What is the driest month in Harpers?
How many days does it rain in September in Harpers?
When it does not snow in Harpers?
Does it snow in Harpers in September?
How many hours of daylight does Harpers have in September?
What time are sunrise and sunset in September in Harpers?
How many hours of sunshine does Harpers have in September?
What is the UV index reading in September in Harpers?
Average temperature in September
Harpers, PA
- Average high temperature in September: 22.7°C
The warmest month (with the highest average high temperature) is July (27.5°C).
The month with the lowest average high temperature is January (0.3°C).
- Average low temperature in September: 12.1°C
The month with the highest average low temperature is July (16.6°C).
The coldest month (with the lowest average low temperature) is January (-6.5°C).
Average pressure in September
Harpers, PA
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is November (1020mbar).
The month with the lowest atmospheric pressure is June (1013.9mbar).
Average wind speed in September
Harpers, PA
- Average wind speed in September: 9km/h
The windiest month (with the highest average wind speed) is March (13.3km/h).
The calmest month (with the lowest average wind speed) is August (8.1km/h).
Average humidity in September
Harpers, PA
- Average humidity in September: 80%
The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are April and July (77%).
Average rainfall in September
Harpers, PA
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is July (77mm).
The driest month (with the least rainfall) is September (45mm).
Average rainfall days in September
Harpers, PA
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.6 days).
Average snowfall in September
Harpers, PA
- Average snowfall in September: 0mm
The months with the highest snowfall are January and March (112mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Harpers, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Harpers, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Harpers, PA
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in September
Harpers, PA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Harpers, PA
- Average cloud cover in September: 40
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in September
Harpers, PA
- Average visibility in September: 8km
The month with the highest visibility is April (9km).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (8km).
Harpers, Pennsylvania, USA
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