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 start of September signals a gentle decrease in the average high-temperature, transitioning from a warm 81.3°F (27.4°C) in August to a still moderately hot 74.3°F (23.5°C). Plainfield, during September, witnesses an average low-temperature of 55.4°F (13°C).Humidity
In September, the average relative humidity in Plainfield is 79%.Rainfall
September is the month with the least rainfall in Plainfield. Rain falls for 13 days and accumulates 1.97" (50mm) of precipitation.Snowfall
In Plainfield, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:05 am and sunset at 6:52 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In Plainfield, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 in September translates into this advice:
Heed the precautions - It is counselled to guard against solar damage. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Frequently asked questions
What is the usual temperature for Plainfield in September?
What is the average humidity in September in Plainfield?
What is the driest month in Plainfield?
How much does it rain in Plainfield in September?
When it does not snow in Plainfield?
Does it snow in Plainfield in September?
How many hours of daylight does Plainfield have in September?
What time are sunrise and sunset in September in Plainfield?
How long on average sun shines in September in Plainfield?
How high is the UV index in September in Plainfield?
Average temperature in September
Plainfield, PA
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in September
Plainfield, 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
Plainfield, PA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in September
Plainfield, PA
- Average humidity in September: 79%
The months with the highest relative humidity are February, May and October (80%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in September
Plainfield, PA
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in September
Plainfield, PA
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in September
Plainfield, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Plainfield, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Plainfield, PA
- Average daylight in September: 12h and 2min
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 24min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Plainfield, PA
- Average sunshine days in September: 15 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (11 days).
Average UV index in September
Plainfield, PA
- Average UV index in September: 4
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Plainfield, PA
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Plainfield, PA
- Average visibility in September: 5mi
The months with the highest visibility are April, June, July, August, November and December (6mi).
The months with the lowest visibility are January, February, March, May, September and October (5mi).
Plainfield, Pennsylvania, USA
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