September weather forecast and climate
West Smithfield, NC

September, the first month of the autumn, in West Smithfield, is still a warm month, with temperature in the range of an average high of 81.5°F (27.5°C) and an average low of 64.9°F (18.3°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a moderately hot 81.5°F (27.5°C). In West Smithfield, in September, the average low-temperature is 64.9°F (18.3°C).

Heat index

The average heat index is evaluated at a hot 86.9°F (30.5°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like metabolic differences, differences in body mass, height, and shape, wind, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

Months with the highest humidity are May, August and September, with an average relative humidity of 77%.

Rainfall

In West Smithfield, during September, the rain falls for 10.1 days and regularly aggregates up to 0.79" (20mm) of precipitation. Throughout the year, there are 115.7 rainfall days, and 11.06" (281mm) of precipitation is accumulated.

Snowfall

March through December are months without snowfall.

Daylight

In West Smithfield, the average length of the day is 12.4h.

Sunshine

In September, the average sunshine in West Smithfield is 9h.

UV index

In September, the average daily maximum UV index in West Smithfield is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in West Smithfield?

In West Smithfield, in September, the average high-temperature is 81.5°F (27.5°C), and the average low-temperature is 64.9°F (18.3°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), that calculates temperature value influenced by the moisture in the air, is estimated at 86.9°F (30.5°C).

What is the most humid month in West Smithfield?

May, August and September, with an average relative humidity of 77%, are most humid months in West Smithfield.

What is the average humidity in September in West Smithfield?

The average relative humidity in September in West Smithfield is 77%.

How many days does it rain in September in West Smithfield?

In West Smithfield, North Carolina, in September, it is raining for 10.1 days, with typically 0.79" (20mm) of accumulated precipitation.

When it does not snow in West Smithfield?

In West Smithfield snow does not fall in March through December.

How many hours of daylight does West Smithfield have in September?

The average length of the day in September is 12.4h.

How long on average sun shines in September in West Smithfield?

In West Smithfield, North Carolina, the average sunshine in September is 9h.

What is the UV index reading in September in West Smithfield?

In September, the average daily maximum UV index in West Smithfield, North Carolina, is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in September - West Smithfield, NC
  • Average high temperature in September: 27.5°C

The warmest month (with the highest average high temperature) is July (31.3°C).
The month with the lowest average high temperature is January (9.4°C).

  • Average low temperature in September: 18.3°C

The month with the highest average low temperature is July (21.7°C).
The coldest month (with the lowest average low temperature) is January (1.2°C).

Average pressure in September - West Smithfield, NC
  • Average pressure in September: 1016.7mbar

The month with the highest atmospheric pressure is November (1020.7mbar).
The month with the lowest atmospheric pressure is June (1014.6mbar).

Average humidity in September - West Smithfield, NC
  • Average humidity in September: 77%

Months with the highest relative humidity are May, August and September (77%).
Months with the lowest relative humidity are January, March and November (73%).

Average rainfall in September - West Smithfield, NC
  • Average rainfall in September: 20mm

The wettest month (with the highest rainfall) is August (38mm).
The driest month (with the least rainfall) is January (17mm).

Average rainfall days in September - West Smithfield, NC
  • Average rainfall days in September: 10.1 days

The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is November (6.5 days).

Average snowfall in September - West Smithfield, NC
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (3mm).
Months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in September - West Smithfield, NC
  • Average snowfall days in September: 0 days

Months with the highest number of snowfall days are January and February (0.8 days).
Months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).

Average daylight in September / Average sunshine in September - West Smithfield, NC
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.8h).

  • Average sunshine in September: 9h

The month with the most sunshine is June (Average sunshine: 10.6h).
Months with the least sunshine are January and December (Average sunshine: 5.4).

Average sunshine days in September - West Smithfield, NC
  • Average sunshine days in September: 18.6 days

The month with the most sunshine days is October (22.7 days).
The month with the least sunshine days is July (13.9 days).

Average UV index in September - West Smithfield, NC
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).

Average cloud cover in September - West Smithfield, NC
  • Average cloud cover in September: 37

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 31).

Average visibility in September - West Smithfield, NC
  • Average visibility in September: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).