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's onset introduces a mild reduction in the average high-temperature, from 83.3°F (28.5°C) in August to a still moderately hot 76.3°F (24.6°C). In Newtown, the average nighttime temperature during September is a moderate 59.4°F (15.2°C).Humidity
The average relative humidity in September in Newtown, Pennsylvania, is 75%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.2 days and typically collects 1.89" (48mm) of precipitation.Snowfall
In Newtown, snow does not fall in June through September.Daylight
In Newtown, the average length of the day in September is 12h and 27min.On the first day of September in Newtown, sunrise is at 6:27 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:43 pm EDT.
Sunshine
The average sunshine in September in Newtown is 8.7h.UV index
In September, the average daily maximum UV index in Newtown is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Exercise prevention - Warding off sunburn is urged. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
What is the temperature in September in Newtown?
What is the average humidity in September in Newtown?
What is the driest month in Newtown?
How many days does it rain in September in Newtown?
When it does not snow in Newtown?
Does it snow in Newtown in September?
What is the average length of the day in September in Newtown?
When is the sunrise / sunset in September in Newtown?
How many hours of sunshine does Newtown have in September?
How high is the UV index in September in Newtown?
Average temperature in September
Newtown, PA
- Average high temperature in September: 76.3°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in September: 59.4°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in September
Newtown, 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 (29.93"Hg).
Average wind speed in September
Newtown, PA
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in September
Newtown, PA
- Average humidity in September: 75%
The months with the highest relative humidity are February and October (78%).
The months with the lowest relative humidity are April, July and August (72%).
Average rainfall in September
Newtown, PA
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is December (3.31").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Newtown, PA
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in September
Newtown, PA
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.78").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Newtown, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Newtown, 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 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Newtown, PA
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in September
Newtown, PA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (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
Newtown, PA
- Average cloud cover in September: 38
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Newtown, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Newtown, Pennsylvania, USA
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