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 move into September indicates a slight reduction in the average high-temperature, down from August's moderately hot 77°F (25°C) to a pleasant 69.8°F (21°C). Harrison Valley encounters a steady low-temperature average of 49.6°F (9.8°C) throughout the month of September.Humidity
The average relative humidity in September in Harrison Valley is 81%.Rainfall
September is the month with the least rainfall in Harrison Valley. Rain falls for 14.2 days and accumulates 2.17" (55mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Harrison Valley, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:43 pm. On the last day of September, in Harrison Valley, sunrise is at 7:07 am and sunset at 6:53 pm EDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
In Harrison Valley, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the UV index of 3 transforms into the following advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
What are the temperatures in Harrison Valley in September?
What is the average humidity in September in Harrison Valley?
What is the driest month in Harrison Valley?
How many days does it rain in September in Harrison Valley?
When it does not snow in Harrison Valley?
Does it snow in Harrison Valley in September?
How many hours of daylight does Harrison Valley have in September?
What time are sunrise and sunset in September in Harrison Valley?
How many hours of sunshine does Harrison Valley have in September?
How high is the UV index in September in Harrison Valley?
Average temperature in September
Harrison Valley, PA
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in September: 49.6°F
The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in September
Harrison Valley, 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
Harrison Valley, PA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Harrison Valley, PA
- Average humidity in September: 81%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are June and July (78%).
Average rainfall in September
Harrison Valley, PA
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in September
Harrison Valley, PA
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in September
Harrison Valley, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (10.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Harrison Valley, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Harrison Valley, PA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The months with the least sunshine are January and December (Average sunshine: 2h and 54min).
Average sunshine days in September
Harrison Valley, PA
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is September (13.5 days).
The month with the least sunshine days is February (5.9 days).
Average UV index in September
Harrison Valley, PA
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Harrison Valley, PA
- Average cloud cover in September: 45
The month with the most cloud cover is January (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 41).
Average visibility in September
Harrison Valley, PA
- Average visibility in September: 4mi
The months with the highest visibility are March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February and September (4mi).
Harrison Valley, Pennsylvania, USA
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