September weather forecast
Arapahoe, NC

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Arapahoe, North Carolina, with an average temperature varying between 81.9°F (27.7°C) and 70°F (21.1°C).

Temperature

The commencement of September brings an average high-temperature of a warm 81.9°F (27.7°C), marking an inconsequential divergence from August. During September, Arapahoe sees a mean low-temperature of 70°F (21.1°C).

Heat index

The heat index for September is evaluated at a tropical 87.8°F (31°C). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

The average relative humidity in September is 77%.

Rainfall

In Arapahoe, in September, during 14.7 rainfall days, 4.09" (104mm) of precipitation is typically accumulated. In Arapahoe, during the entire year, the rain falls for 174.7 days and collects up to 39.61" (1006mm) of precipitation.

Snowfall

April through November are months without snowfall.

Daylight

In Arapahoe, the average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 6:40 am and sunset at 7:33 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:52 pm EDT.

Sunshine

In September, the average sunshine is 9.4h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: In September, a daily UV index of 6 turns into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures?

The high-temperature, in September, in Arapahoe, is 81.9°F (27.7°C), while the low-temperature averages to 70°F (21.1°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in September is evaluated at 87.8°F (31°C).

What is the average humidity in September?

In September, the average relative humidity in Arapahoe is 77%.

How many days does it rain in September?

In Arapahoe, in September, it is raining for 14.7 days, with typically 4.09" (104mm) of accumulated precipitation.

When it does not snow?

In Arapahoe, snow does not fall in April through November.

How many hours of daylight does Arapahoe have in September?

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

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:40 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:52 pm EDT.

How long on average sun shines in September?

In Arapahoe, the average sunshine duration in September is 9.4h.

How high is the UV index in September?

In September, the average daily maximum UV index in Arapahoe is 6. A UV Index estimate of 6 to 7 represents a high health risk 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
Arapahoe, NC

Average temperature in September - Arapahoe, NC
  • Average high temperature in September: 81.9°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (52.3°F).

  • Average low temperature in September: 70°F

The month with the highest average low temperature is July (74.8°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

Average pressure in September
Arapahoe, NC

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

The months with the highest atmospheric pressure are January, November and December (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in September
Arapahoe, NC

Average wind speed in September - Arapahoe, NC
  • Average wind speed in September: 7.8mph

The windiest months (with the highest average wind speed) are February, March and April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

Average humidity in September
Arapahoe, NC

Average humidity in September - Arapahoe, NC
  • Average humidity in September: 77%

The month with the highest relative humidity is December (79%).
The months with the lowest relative humidity are March and April (74%).

Average rainfall in September
Arapahoe, NC

Average rainfall in September - Arapahoe, NC
  • Average rainfall in September: 4.09"

The wettest month (with the highest rainfall) is August (4.37").
The driest month (with the least rainfall) is January (2.36").

Average rainfall days in September
Arapahoe, NC

Average rainfall days in September - Arapahoe, NC
  • Average rainfall days in September: 14.7 days

The month with the highest number of rainy days is July (20.8 days).
The month with the least rainy days is November (10.7 days).

Average snowfall in September
Arapahoe, NC

Average snowfall in September - Arapahoe, NC
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.71").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Arapahoe, NC

Average snowfall days in September - Arapahoe, NC
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Arapahoe, NC

Average daylight in September / Average sunshine in September - Arapahoe, 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 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in September
Arapahoe, NC

Average sunshine days in September - Arapahoe, NC
  • Average sunshine days in September: 13 days

The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is July (8.3 days).

Average UV index in September
Arapahoe, NC

Average UV index in September - Arapahoe, NC
  • Average UV index in September: 6

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

Average cloud cover in September
Arapahoe, NC

Average cloud cover in September - Arapahoe, NC
  • Average cloud cover in September: 33

The months with the most cloud cover are March and December (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 28).

Average visibility in September
Arapahoe, NC

Average visibility in September - Arapahoe, 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).

Arapahoe, North Carolina, USA

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