September weather forecast and climate
Norman, NC

The first month of the autumn, September, is also a moderately hot month in Norman, North Carolina, with average temperature fluctuating between 82.9°F (28.3°C) and 64°F (17.8°C).

Temperature

In September, the average high-temperature slightly decreases, from a tropical 88.3°F (31.3°C) in August, to a moderately hot 82.9°F (28.3°C). In September, the average low-temperature is 64°F (17.8°C).

Heat index

In September, the average heat index is estimated at a tropical 89.6°F (32°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, clothing, differences in body mass, height, and shape, and metabolic differences affect individual temperature impact. 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. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

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

Rainfall

In Norman, during 13.5 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, there are 159.1 rainfall days, and 30.47" (774mm) of precipitation is accumulated.

Snowfall

In Norman snow does not fall in April through October.

Daylight

In Norman, the average length of the day is 12.4h.

Sunshine

In September, the average sunshine in Norman is 9.1h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health 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 - Protection against sunburn is recommended. 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 Norman?

In Norman, North Carolina, in September, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 64°F (17.8°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), that combines air temperature and relative humidity, in September is estimated at 89.6°F (32°C).

What is the average humidity in September in Norman?

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

How much does it rain in Norman in September?

In Norman, North Carolina, during September, the rain falls for 13.5 days and regularly aggregates up to 2.68" (68mm) of precipitation.

When it does not snow in Norman?

In Norman snow does not fall in April through October.

How many hours of daylight does Norman have in September?

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

How many hours of sunshine does Norman have in September?

In Norman, the average sunshine in September is 9.1h.

What is the UV index reading in September in Norman?

The average daily maximum UV index in September in Norman is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in September - Norman, NC
  • Average high temperature in September: 28.3°C

The warmest month (with the highest average high temperature) is July (32.6°C).
The month with the lowest average high temperature is January (9.6°C).

  • Average low temperature in September: 17.8°C

The month with the highest average low temperature is July (21.6°C).
The coldest month (with the lowest average low temperature) is January (0.8°C).

Average pressure in September - Norman, NC
  • Average pressure in September: 1016.8mbar

The month with the highest atmospheric pressure is November (1021mbar).
The month with the lowest atmospheric pressure is June (1014.8mbar).

Average wind speed in September - Norman, NC
  • Average wind speed in September: 8.8km/h

The windiest month (with the highest average wind speed) is April (12km/h).
The calmest month (with the lowest average wind speed) is August (7.8km/h).

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

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (71%).

Average rainfall in September - Norman, NC
  • Average rainfall in September: 68mm

The wettest month (with the highest rainfall) is August (83mm).
The driest month (with the least rainfall) is October (48mm).

Average rainfall days in September - Norman, NC
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (9.4 days).

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

The month with the highest snowfall is February (26mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

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

The month with the highest number of snowfall days is February (1.5 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Norman, 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: 9.1h

The month with the most sunshine is July (Average sunshine: 10.8h).
Months with the least sunshine are January and December (Average sunshine: 5.5).

Average sunshine days in September - Norman, NC
  • Average sunshine days in September: 15 days

The month with the most sunshine days is October (20.1 days).
Months with the least sunshine days are July and August (11.4 days).

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

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

Average cloud cover in September - Norman, NC
  • Average cloud cover in September: 34

Months with the most cloud cover are February, March and December (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in September - Norman, 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).