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 arrival in New Castle coincides with a soft drop in the average high-temperature, subtly decreasing from August's moderately hot 80.6°F (27°C) to a still warm 73.8°F (23.2°C). In September, New Castle experiences a temperature dip to an average of 54°F (12.2°C) at night.Humidity
In New Castle, the average relative humidity in September is 79%.Rainfall
In September, in New Castle, Pennsylvania, the rain falls for 15.1 days. Throughout September, 2.48" (63mm) of precipitation is accumulated. In New Castle, during the entire year, the rain falls for 177.6 days and collects up to 34.92" (887mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In New Castle, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:53 pm. On the last day of September, in New Castle, sunrise is at 7:17 am and sunset at 7:04 pm EDT.
Sunshine
In New Castle, the average sunshine in September is 8.2h.UV index
The average daily maximum UV index in September in New Castle is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high daily UV index of 3 during September translates into the following directions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What is the average September temperature in New Castle?
What is the average humidity in September in New Castle?
How much does it rain in New Castle in September?
When it does not snow in New Castle?
Does it snow in New Castle in September?
How many hours of daylight does New Castle have in September?
What time are sunrise and sunset in September in New Castle?
How many hours of sunshine does New Castle have in September?
What is the UV index intensity in September in New Castle?
Average temperature in September
New Castle, PA
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in September
New Castle, 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
New Castle, PA
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity in September
New Castle, PA
- Average humidity in September: 79%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, May, June, July and August (78%).
Average rainfall in September
New Castle, PA
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is November (2.24").
Average rainfall days in September
New Castle, PA
- Average rainfall days in September: 15.1 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in September
New Castle, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (6.93").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
New Castle, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
New Castle, 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 1min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
New Castle, PA
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is February (7 days).
Average UV index in September
New Castle, 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
New Castle, PA
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
New Castle, PA
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February and December (4mi).
New Castle, Pennsylvania, USA
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