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 moderately hot 84.4°F (29.1°C) in August to a still warm 77.7°F (25.4°C). The temperature lowers to an average of 56.1°F (13.4°C) during September nights.Humidity
May, September and December, with an average relative humidity of 77%, are the most humid months in New Castle.Rainfall
The month with the least rainfall is September, when the rain falls for 12.9 days and typically collects 1.61" (41mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September in New Castle is 12h and 25min.On the first day of the month, sunrise is at 6:51 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:15 am and sunset at 7:04 pm EDT.
Sunshine
In New Castle, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September in New Castle is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: In September, the maximum UV index of 5 translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Frequently asked questions
What is the temperature in September in New Castle?
What is the most humid month in New Castle?
What is the average humidity in September in New Castle?
What is the driest month in New Castle?
How many days does it rain in September in New Castle?
When it does not snow in New Castle?
Does it snow in New Castle in September?
What is the average length of the day in September in New Castle?
When 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 reading in September in New Castle?
Average temperature in September
New Castle, VA
- Average high temperature in September: 77.7°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (41.2°F).
- Average low temperature in September: 56.1°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in September
New Castle, VA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
New Castle, VA
- Average wind speed in September: 4.2mph
The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in September
New Castle, VA
- Average humidity in September: 77%
The months with the highest relative humidity are May, September and December (77%).
The month with the lowest relative humidity is July (72%).
Average rainfall in September
New Castle, VA
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in September
New Castle, VA
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (7.6 days).
Average snowfall in September
New Castle, VA
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.76").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
New Castle, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
New Castle, VA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
New Castle, VA
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is May (11.6 days).
Average UV index in September
New Castle, VA
- Average UV index in September: 5
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, November and December (UV index 2).
Average cloud cover in September
New Castle, VA
- Average cloud cover in September: 39
The month with the most cloud cover is February (Cloud cover 45).
The months with the least cloud cover are June and July (Cloud cover 31).
Average visibility in September
New Castle, VA
- Average visibility in September: 5mi
The months with the highest visibility are June, July and November (6mi).
The months with the lowest visibility are January, February, March, April, May, August, September, October and December (5mi).
New Castle, Virginia, USA
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