September weather forecast and climate
Colerain, NC

The first month of the autumn, September, is also a moderately hot month in Colerain, North Carolina, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 81.9°F (27.7°C).

Temperature

In Colerain, the average high-temperature slightly decreases, from a hot 87.3°F (30.7°C) in August, to a warm 81.9°F (27.7°C). The average low-temperature, in September, is 64.9°F (18.3°C).

Heat index

The average heat index is calculated to a hot 88.2°F (31.2°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise 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', 'felt air temperature', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, pregnancy, clothing, and wind 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 especially crucial for babies and toddlers. 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

Months with the highest humidity are May, August, September and December, with an average relative humidity of 79%.

Rainfall

In Colerain, in September, it is raining for 9.5 days, with typically 1.02" (26mm) of accumulated precipitation. In Colerain, during the entire year, the rain falls for 120.6 days and collects up to 12.44" (316mm) of precipitation.

Snowfall

In Colerain snow does not fall in April through November.

Daylight

In Colerain, North Carolina, the average length of the day is 12.4h.

Sunshine

The average sunshine in Colerain is 8.9h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Colerain?

In September, in Colerain, the average high-temperature is 81.9°F (27.7°C), and the average low-temperature is 64.9°F (18.3°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), that represents influence of the relative humidity to air temperaure, in September is calculated to 88.2°F (31.2°C).

What are the most humid months in Colerain?

May, August, September and December, with an average relative humidity of 79%, are most humid months.

What is the average humidity in September in Colerain?

In September, the average relative humidity in Colerain, North Carolina, is 79%.

How much does it rain in Colerain in September?

In September, in Colerain, North Carolina, the rain falls for 9.5 days. Throughout September, 1.02" (26mm) of precipitation is accumulated.

When it does not snow in Colerain?

April through November are months without snowfall.

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

The average length of the day in September in Colerain, North Carolina, is 12.4h.

How long on average sun shines in September in Colerain?

In September, the average sunshine is 8.9h.

What is the UV index reading in September in Colerain?

In Colerain, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.
Average temperature in September - Colerain, NC
  • Average high temperature in September: 81.9°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (48.7°F).

  • Average low temperature in September: 64.9°F

The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (32.9°F).

Average pressure in September - Colerain, NC
  • Average pressure in September: 30.03"

Months with the highest atmospheric pressure are November and December (30.13").
The month with the lowest atmospheric pressure is June (29.96").

Average wind speed in September - Colerain, NC
  • Average wind speed in September: 6.3mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in September - Colerain, NC
  • Average humidity in September: 79%

Months with the highest relative humidity are May, August, September and December (79%).
The month with the lowest relative humidity is January (75%).

Average rainfall in September - Colerain, NC
  • Average rainfall in September: 1.02"

The wettest month (with the highest rainfall) is June (1.61").
The driest months (with the least rainfall) are January and December (0.71").

Average rainfall days in September - Colerain, NC
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is May (13.5 days).
Months with the least rainy days are January and November (6.9 days).

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

The month with the highest snowfall is February (0.43").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

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

The month with the highest number of snowfall days is February (1.1 days).
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 - Colerain, 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: 8.9h

Months with the most sunshine are June and July (Average sunshine: 10.3h).
The month with the least sunshine is December (Average sunshine: 5.2h).

Average sunshine days in September - Colerain, NC
  • Average sunshine days in September: 18.4 days

The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is May (14.3 days).

Average UV index in September - Colerain, 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 - Colerain, NC
  • Average cloud cover in September: 40

The month with the most cloud cover is March (Cloud cover 45).
Months with the least cloud cover are June and July (Cloud cover 34).

Average visibility in September - Colerain, NC
  • Average visibility in September: 5mi

Months with the highest visibility are January, February, March, April, June, July, October, November and December (6mi).
Months with the lowest visibility are May, August and September (5mi).