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 heralds a minor drop in average high-temperature, sliding from August's warm 79.3°F (26.3°C) to a still moderately hot 73.4°F (23°C). In the month of September, the temperature in West Middlesex, Pennsylvania, generally rests at an average low of 53.8°F (12.1°C).Humidity
In September, the average relative humidity is 80%.Rainfall
The month with the least rainfall in West Middlesex is September, when the rain falls for 15.5 days and typically collects 2.2" (56mm) of precipitation.Snowfall
In West Middlesex, snow does not fall in June through September.Daylight
In West Middlesex, Pennsylvania, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:04 pm EDT.
Sunshine
In West Middlesex, the average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Heed the precautions - It is counselled to guard against solar damage. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What are September temperatures in West Middlesex?
What is the average humidity in September in West Middlesex?
What is the driest month in West Middlesex?
How many days does it rain in September in West Middlesex?
When it does not snow in West Middlesex?
Does it snow in West Middlesex in September?
What is the average length of the day in September in West Middlesex?
When are sunrise and sunset in September in West Middlesex?
How long on average sun shines in September in West Middlesex?
How high is the UV index in September in West Middlesex?
Average temperature in September
West Middlesex, PA
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in September: 53.8°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in September
West Middlesex, PA
- Average pressure in September: 30.05"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
West Middlesex, PA
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is July (5mph).
Average humidity in September
West Middlesex, PA
- Average humidity in September: 80%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are May, July and August (78%).
Average rainfall in September
West Middlesex, PA
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in September
West Middlesex, PA
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
West Middlesex, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (8.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
West Middlesex, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
West Middlesex, 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: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
West Middlesex, PA
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is September (12.7 days).
The month with the least sunshine days is February (6 days).
Average UV index in September
West Middlesex, 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
West Middlesex, PA
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
West Middlesex, PA
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).
West Middlesex, Pennsylvania, USA
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