September weather forecast and climate
Olin, NC

September, the first month of the autumn, in Olin, is also a moderately hot month, with average temperature ranging between min 61.3°F (16.3°C) and max 81.1°F (27.3°C).

Temperature

In September, the average high-temperature slightly decreases, from a tropical 87.1°F (30.6°C) in August, to a moderately hot 81.1°F (27.3°C). In September, the average low-temperature is 61.3°F (16.3°C).

Heat index

The average heat index is evaluated at 85.6°F (29.8°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like wind, differences in body mass, height, and shape, metabolic differences, 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

In September, the average relative humidity is 74%.

Rainfall

In September, the rain falls for 13.5 days. Throughout September, 2.28" (58mm) of precipitation is accumulated. Throughout the year, in Olin, there are 160.9 rainfall days, and 32.76" (832mm) of precipitation is accumulated.

Snowfall

In Olin snow does not fall in April through October.

Daylight

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

Sunshine

In Olin, North Carolina, the average sunshine in September is 8.6h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. 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 Olin?

The average high-temperature, in September, is 81.1°F (27.3°C), while the average low-temperature is 61.3°F (16.3°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), that factores the actual air temperature with the relative humidity, in September is estimated at 85.6°F (29.8°C).

What is the average humidity in September in Olin?

The average relative humidity in September in Olin is 74%.

How many days does it rain in September in Olin?

In September, in Olin, North Carolina, the rain falls for 13.5 days. Throughout September, 2.28" (58mm) of precipitation is accumulated.

When it does not snow in Olin?

April through October are months without snowfall in Olin, North Carolina.

How many hours of daylight does Olin have in September?

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

How long on average sun shines in September in Olin?

In September, the average sunshine in Olin is 8.6h.

What is the UV index reading in September in Olin?

The average daily maximum UV index in September in Olin is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.
Average temperature in September - Olin, NC
  • Average high temperature in September: 27.3°C

The warmest month (with the highest average high temperature) is July (31.8°C).
The month with the lowest average high temperature is January (8°C).

  • Average low temperature in September: 16.3°C

The month with the highest average low temperature is July (19.7°C).
The coldest month (with the lowest average low temperature) is January (-0.6°C).

Average pressure in September - Olin, NC
  • Average pressure in September: 1017.6mbar

The month with the highest atmospheric pressure is November (1021.3mbar).
The month with the lowest atmospheric pressure is June (1015.4mbar).

Average wind speed in September - Olin, NC
  • Average wind speed in September: 7.6km/h

The windiest month (with the highest average wind speed) is April (11.3km/h).
The calmest month (with the lowest average wind speed) is August (6.6km/h).

Average humidity in September - Olin, NC
  • Average humidity in September: 74%

Months with the highest relative humidity are May and December (76%).
The month with the lowest relative humidity is July (70%).

Average rainfall in September - Olin, NC
  • Average rainfall in September: 58mm

The wettest month (with the highest rainfall) is April (91mm).
The driest month (with the least rainfall) is October (51mm).

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

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (9.5 days).

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

The month with the highest snowfall is December (56mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

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

The month with the highest number of snowfall days is February (2.8 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 - Olin, 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: 9.8h).

  • Average sunshine in September: 8.6h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is December (Average sunshine: 5.4h).

Average sunshine days in September - Olin, NC
  • Average sunshine days in September: 14.8 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (10.9 days).

Average UV index in September - Olin, 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 - Olin, NC
  • Average cloud cover in September: 34

Months with the most cloud cover are February and March (Cloud cover 42).
Months with the least cloud cover are June and July (Cloud cover 29).

Average visibility in September - Olin, 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).