September weather forecast
Poquoson, VA

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Weather in September

September signifies the arrival of fall, bringing along moderate temperatures and welcome cool breezes in Poquoson. Though rainfall remains consistent, the city revels in clear skies and relatively low humidity. The lowering UV index marks a definitive shift towards safer, more pleasant weather. As the landscape transitions into the vibrant hues of fall, expect shorter days and cooler nights. As October approaches, further reductions in temperature and daylight hours are anticipated.

Temperature

September heralds a minor drop in average high-temperature, sliding from August's 84.2°F (29°C) to a still warm 78.8°F (26°C). Throughout September, the temperature tends to fall to a consistent average low of 68.2°F (20.1°C).

Humidity

The average relative humidity in September is 75%.

Rainfall

In Poquoson, in September, it is raining for 13.4 days, with typically 2.76" (70mm) of accumulated precipitation. Throughout the year, in Poquoson, there are 161.2 rainfall days, and 28.43" (722mm) of precipitation is accumulated.

Snowfall

April through November are months without snowfall in Poquoson, Virginia.

Daylight

In September, the average length of the day in Poquoson is 12h and 25min.
On the first day of the month, sunrise is at 6:36 am and sunset at 7:33 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:49 pm EDT.

Sunshine

In Poquoson, the average sunshine in September is 9.4h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 5 during September leads to these advisories:
Take precautions - Protection against skin and eye damage is obliged. It's recommended to limit sun exposure when its radiation is at its peak during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What is the average September temperature in Poquoson?

In Poquoson, in September, the average high-temperature is 78.8°F (26°C), and the average low-temperature is 68.2°F (20.1°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in August is estimated at 91.4°F (33°C).

What is the average humidity in September in Poquoson?

In Poquoson, Virginia, the average relative humidity in September is 75%.

How many days does it rain in September in Poquoson?

In Poquoson, during September, the rain falls for 13.4 days and regularly aggregates up to 2.76" (70mm) of precipitation.

When it does not snow in Poquoson?

April through November are months without snowfall in Poquoson.

What is the average length of the day in September in Poquoson?

In September, the average day length in Poquoson is 12h and 25min.

What time are sunrise and sunset in September in Poquoson?

On the first day of September, sunrise is at 6:36 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:49 pm EDT.

How many hours of sunshine does Poquoson have in September?

The average sunshine duration in September in Poquoson, Virginia, is 9.4h.

How high is the UV index in September in Poquoson?

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Poquoson, VA

Average temperature in September - Poquoson, 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).

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Average pressure in September
Poquoson, VA

Average pressure in September - Poquoson, 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).

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Average wind speed in September
Poquoson, VA

Average wind speed in September - Poquoson, 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).

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Average humidity in September
Poquoson, VA

Average humidity in September - Poquoson, 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%).

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Average rainfall in September
Poquoson, VA

Average rainfall in September - Poquoson, 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").

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Average rainfall days in September
Poquoson, VA

Average rainfall days in September - Poquoson, 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).

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Average snowfall in September
Poquoson, VA

Average snowfall in September - Poquoson, 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").

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Average snowfall days in September
Poquoson, VA

Average snowfall days in September - Poquoson, 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).

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Average daylight in September /
Average sunshine in September
Poquoson, VA

Average daylight in September / Average sunshine in September - Poquoson, 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 42min).

  • Average sunshine in September: 9h and 2min

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).

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Average sunshine days in September
Poquoson, VA

Average sunshine days in September - Poquoson, 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).

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Average UV index in September
Poquoson, VA

Average UV index in September - Poquoson, 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).

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Average cloud cover in September
Poquoson, VA

Average cloud cover in September - Poquoson, 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).

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Average visibility in September
Poquoson, VA

Average visibility in September - Poquoson, 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).

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Poquoson, Virginia, USA

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