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
September brings a slight decrease in temperature, down from a moderately hot 78.6°F (25.9°C) in August to an agreeable 71.2°F (21.8°C). During September nights, Orviston witnesses a consistent average temperature of 50.5°F (10.3°C).Humidity
The average relative humidity in September is 81%.Rainfall
In Orviston, during September, the rain falls for 13.2 days and regularly aggregates up to 2.28" (58mm) of precipitation. In Orviston, during the entire year, the rain falls for 179.8 days and collects up to 32.36" (822mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:54 pm EDT.
Sunshine
In September, the average sunshine in Orviston is 8.3h.UV index
In Orviston, the average daily maximum UV index in September 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: A daily high UV index of 3 in September leads to these guidelines:
Act with care - The suggestion to avoid sunburn is emphasized. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September in Orviston?
When it does not snow?
Does it snow in September?
How many hours of daylight does Orviston have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Orviston have in September?
What is the UV index reading in September?
Average temperature in September
Orviston, PA
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in September: 50.5°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in September
Orviston, PA
- Average pressure in September: 30.07"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
Orviston, PA
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Orviston, PA
- Average humidity in September: 81%
The months with the highest relative humidity are February and December (86%).
The month with the lowest relative humidity is July (77%).
Average rainfall in September
Orviston, PA
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is April (3.58").
The driest month (with the least rainfall) is November (2.2").
Average rainfall days in September
Orviston, PA
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (11.1 days).
Average snowfall in September
Orviston, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (7.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Orviston, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Orviston, 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: 9h and 54min).
The months with the least sunshine are January and December (Average sunshine: 3h and 12min).
Average sunshine days in September
Orviston, PA
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is September (14.9 days).
The month with the least sunshine days is February (7.7 days).
Average UV index in September
Orviston, PA
- Average UV index in September: 3
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
Orviston, PA
- Average cloud cover in September: 44
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in September
Orviston, PA
- Average visibility in September: 4mi
The months with the highest visibility are March, April, May, June, July, August, October and November (5mi).
The months with the lowest visibility are January, February, September and December (4mi).
Orviston, Pennsylvania, USA
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