September weather forecastNewport News, VA
September
Weather in September
The arrival of September signals the transition to cooler weather, with the overall temperature dropping to 78.8°F (26°C). Equally important is the minor increase in cloud percentage from 29% to 33%, beginning to shade the persistent summer sun. Wind speed witnesses a gradual rise, preparing Newport News for the oncoming change in weather. The rainfall pattern sustains its prior course, providing occasional bursts of rain. To summarize, September portrays a perfect blend of the receding summer and the upcoming fall, painting a picture of golden brown amidst fleeting green.Temperature
In September, the average high-temperature marginally drops from a moderately hot 84.2°F (29°C) in August to a still warm 78.8°F (26°C). In the month of September, Newport News witnesses a consistent average low-temperature of 68.2°F (20.1°C).Humidity
In September, the average relative humidity is 75%.Rainfall
In Newport News, Virginia, in September, it is raining for 13.4 days, with typically 2.76" (70mm) of accumulated precipitation. Throughout the year, there are 161.2 rainfall days, and 28.43" (722mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Ocean temperature
In Newport News, in September, the average water temperature is 75.6°F (24.2°C).Note: Taking into account a person's sensitivity to the cold, given sunshine, wind, and air temperature, swimming in 75.6°F (24.2°C) might be pleasant. (FYI: The water temperature set for the Olympic swimming event is between 77°F (25°C) and 82.4°F (28°C).)
Daylight
In Newport News, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:37 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:50 pm EDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In Newport News, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 5 during September translates into the following guidance:
Guard yourself - An obligation to protect skin and eyes from harm exists. When the Sun is at its strongest around midday, find shade and limit exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be on guard! The reflective nature of sand and water boosts UV exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Newport News, VA
- Average high temperature in September: 78.8°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (44.8°F).
- Average low temperature in September: 68.2°F
The month with the highest average low temperature is July (73.9°F).
The coldest month (with the lowest average low temperature) is January (34.2°F).
Average pressure in September
Newport News, VA
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Newport News, VA
- Average wind speed in September: 9mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is August (8mph).
Average humidity in September
Newport News, VA
- Average humidity in September: 75%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is July (73%).
Average rainfall in September
Newport News, VA
- Average rainfall in September: 2.76"
The wettest month (with the highest rainfall) is August (3.23").
The driest month (with the least rainfall) is November (1.85").
Average rainfall days in September
Newport News, VA
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is August (17.3 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in September
Newport News, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Newport News, VA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Newport News, VA
- Average sea temperature in September: 75.6°F
The best month for swimming (with the highest average sea temperature) is August (80°F).
The coldest month (with the lowest average sea temperature) is February (44.5°F).
Average daylight in September /
Average sunshine in September
Newport News, VA
- Average daylight in September: 12h and 24min
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 42min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in September
Newport News, VA
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is August (10.5 days).
Average UV index in September
Newport News, VA
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Newport News, VA
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 45).
The months with the least cloud cover are June and July (Cloud cover 27).
Average visibility in September
Newport News, VA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
