September weather forecast and climate
Semora, NC

The first month of the autumn, September, is also a moderately hot month in Semora, North Carolina, with average temperature ranging between max 81.9°F (27.7°C) and min 62.4°F (16.9°C).

Temperature

In Semora, the average high-temperature slightly decreases, from a hot 88°F (31.1°C) in August, to a moderately hot 81.9°F (27.7°C). The average low-temperature, in Semora, is 62.4°F (16.9°C).

Heat index

In September, the average heat index is evaluated at a hot 87.3°F (30.7°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, wind, metabolic differences). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index 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

In Semora, the average relative humidity is 75%.

Rainfall

September is the month with the least rainfall in Semora. Rain falls for 13.6 days and accumulates 1.93" (49mm) of precipitation.

Snowfall

In Semora snow does not fall in May through October.

Daylight

The average length of the day is 12.4h.

Sunshine

In September, the average sunshine in Semora, North Carolina, is 8.7h.

UV index

In September, the average daily maximum UV index in Semora is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in Semora?

In September, in Semora, the average high-temperature is 81.9°F (27.7°C), and the average low-temperature is 62.4°F (16.9°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), that combines both air temperature and relative humidity, is evaluated at 87.3°F (30.7°C).

What is the average humidity in September in Semora?

The average relative humidity in September in Semora is 75%.

How many days does it rain in September in Semora?

In September, the rain falls for 13.6 days. Throughout September, 1.93" (49mm) of precipitation is accumulated.

What is the driest month in Semora?

September is the month with the least rainfall in Semora. Rain falls for 13.6 days and accumulates 1.93" (49mm) of precipitation.

When it does not snow in Semora?

In Semora snow does not fall in May through October.

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

In September, the average length of the day in Semora, North Carolina, is 12.4h.

How long on average sun shines in September in Semora?

In Semora, the average sunshine in September is 8.7h.

What is the UV index intensity in September in Semora?

In September, the average daily maximum UV index in Semora, North Carolina, is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.
Average temperature in September - Semora, NC
  • Average high temperature in September: 27.7°C

The warmest month (with the highest average high temperature) is July (32.3°C).
The month with the lowest average high temperature is January (7.9°C).

  • Average low temperature in September: 16.9°C

The month with the highest average low temperature is July (20.5°C).
The coldest month (with the lowest average low temperature) is January (-0.8°C).

Average pressure in September - Semora, NC
  • Average pressure in September: 1017.4mbar

The month with the highest atmospheric pressure is November (1021.1mbar).
The month with the lowest atmospheric pressure is June (1014.8mbar).

Average wind speed in September - Semora, NC
  • Average wind speed in September: 8.5km/h

The windiest month (with the highest average wind speed) is April (11.9km/h).
The calmest month (with the lowest average wind speed) is August (7.7km/h).

Average humidity in September - Semora, NC
  • Average humidity in September: 75%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (70%).

Average rainfall in September - Semora, NC
  • Average rainfall in September: 49mm

The wettest month (with the highest rainfall) is May (77mm).
The driest month (with the least rainfall) is September (49mm).

Average rainfall days in September - Semora, NC
  • Average rainfall days in September: 13.6 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in September - Semora, NC
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (66mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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

The month with the highest number of snowfall days is February (3 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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

The month with the longest days is June (Average daylight: 14.6h).
The month with the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in September: 8.7h

The month with the most sunshine is June (Average sunshine: 10.7h).
Months with the least sunshine are January and December (Average sunshine: 5.4).

Average sunshine days in September - Semora, NC
  • Average sunshine days in September: 14.9 days

The month with the most sunshine days is October (20.4 days).
The month with the least sunshine days is May (12.1 days).

Average UV index in September - Semora, NC
  • Average UV index in September: 5

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in September - Semora, NC
  • Average cloud cover in September: 39

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

Average visibility in September - Semora, NC
  • Average visibility in September: 8km

Months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (9km).
The month with the lowest visibility is September (8km).