September weather forecast
Cedar Island, NC

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Weather in September

September, the first month of the autumn in Cedar Island, is also a moderately hot month, with temperature in the range of an average high of 79.7°F (26.5°C) and an average low of 74.3°F (23.5°C).

Temperature

Cedar Island records an average high-temperature of a still moderately hot 79.7°F (26.5°C) as September arrives, nearly mirroring the previous month's climate. Cedar Island maintains a near steady average temperature of 74.3°F (23.5°C) during the nights of September, demonstrating little drop from daytime highs.

Humidity

The average relative humidity in September in Cedar Island is 77%.

Rainfall

In Cedar Island, during September, the rain falls for 17.5 days and regularly aggregates up to 4.49" (114mm) of precipitation. Throughout the year, there are 181.4 rainfall days, and 34.76" (883mm) of precipitation is accumulated.

Snowfall

March through December are months without snowfall.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 6:38 am and sunset at 7:31 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:50 pm EDT.

Sunshine

In Cedar Island, the average sunshine in September is 9.6h.

UV index

In Cedar Island, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Updated: Jun 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in September?

In September, in Cedar Island, the average high-temperature is 79.7°F (26.5°C), and the average low-temperature is 74.3°F (23.5°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), 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 Cedar Island, North Carolina, the average relative humidity in September is 77%.

How many days does it rain in September?

In Cedar Island, in September, it is raining for 17.5 days, with typically 4.49" (114mm) of accumulated precipitation.

When it does not snow?

In Cedar Island, snow does not fall in March through December.

How many hours of daylight does Cedar Island have in September?

In September, the average day length is 12h and 23min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:38 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:50 pm EDT.

How many hours of sunshine does Cedar Island have in September?

In September, the average sunshine duration is 9.6h.

How high is the UV index in September?

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to 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
Cedar Island, NC

Average temperature in September - Cedar Island, NC
  • Average high temperature in September: 79.7°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (54.1°F).

  • Average low temperature in September: 74.3°F

The month with the highest average low temperature is July (78.3°F).
The coldest month (with the lowest average low temperature) is January (44.6°F).

Average pressure in September
Cedar Island, NC

Average pressure in September - Cedar Island, NC
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is December (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in September
Cedar Island, NC

Average wind speed in September - Cedar Island, NC
  • Average wind speed in September: 11.6mph

The windiest months (with the highest average wind speed) are February and March (14mph).
The calmest month (with the lowest average wind speed) is August (10.4mph).

Average humidity in September
Cedar Island, NC

Average humidity in September - Cedar Island, NC
  • Average humidity in September: 77%

The months with the highest relative humidity are May, June, July and August (78%).
The months with the lowest relative humidity are February, March and October (74%).

Average rainfall in September
Cedar Island, NC

Average rainfall in September - Cedar Island, NC
  • Average rainfall in September: 4.49"

The wettest month (with the highest rainfall) is August (4.84").
The driest month (with the least rainfall) is January (1.3").

Average rainfall days in September
Cedar Island, NC

Average rainfall days in September - Cedar Island, NC
  • Average rainfall days in September: 17.5 days

The month with the highest number of rainy days is August (22.3 days).
The months with the least rainy days are February and November (11.1 days).

Average snowfall in September
Cedar Island, NC

Average snowfall in September - Cedar Island, NC
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Cedar Island, NC

Average snowfall days in September - Cedar Island, NC
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.6 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Cedar Island, NC

Average daylight in September / Average sunshine in September - Cedar Island, NC
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).

Average sunshine days in September
Cedar Island, NC

Average sunshine days in September - Cedar Island, NC
  • Average sunshine days in September: 9.7 days

The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is August (5.9 days).

Average UV index in September
Cedar Island, NC

Average UV index in September - Cedar Island, NC
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).

Average cloud cover in September
Cedar Island, NC

Average cloud cover in September - Cedar Island, NC
  • Average cloud cover in September: 32

The month with the most cloud cover is December (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 27).

Average visibility in September
Cedar Island, NC

Average visibility in September - Cedar Island, NC
  • 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).

Cedar Island, North Carolina, USA

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