Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
As August transitions into September, Mount Mourne sees a gentle drop in the average high-temperature, transitioning from a tropical 88°F (31.1°C) to a moderately hot 81.9°F (27.7°C). Throughout September, an average nighttime temperature of 61.9°F (16.6°C) is experienced.Heat index
For most parts of September, the heat index is evaluated at a tropical 87.8°F (31°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.The metrics for the heat index are tailored for both shady environments and light winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
In Mount Mourne, the average relative humidity in September is 74%.Rainfall
In September, the rain falls for 12.9 days. Throughout September, 2.28" (58mm) of precipitation is accumulated. Throughout the year, there are 161.6 rainfall days, and 32.91" (836mm) of precipitation is accumulated.Snowfall
In Mount Mourne, North Carolina, snow does not fall in April through October.Daylight
In Mount Mourne, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:56 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:08 pm EDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In Mount Mourne, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A maximum high daily UV index of 5 during September translates into the following directions:
Be vigilant - Preventing sunburn is recommended. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Mount Mourne in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Mount Mourne have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Mount Mourne have in September?
What is the UV index reading in September?
Average temperature in September
Mount Mourne, NC
- Average high temperature in September: 81.9°F
The warmest month (with the highest average high temperature) is July (89.8°F).
The month with the lowest average high temperature is January (46.9°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
Mount Mourne, NC
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Mount Mourne, NC
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Mount Mourne, NC
- Average humidity in September: 74%
The 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
Mount Mourne, NC
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is April (3.46").
The driest month (with the least rainfall) is October (2.13").
Average rainfall days in September
Mount Mourne, NC
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is August (18 days).
The month with the least rainy days is November (9.2 days).
Average snowfall in September
Mount Mourne, NC
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.13").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Mount Mourne, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.6 days).
The 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
Mount Mourne, NC
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Mount Mourne, NC
- Average sunshine days in September: 15.4 days
The months with the most sunshine days are October and November (19.2 days).
The month with the least sunshine days is August (10.9 days).
Average UV index in September
Mount Mourne, NC
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Mount Mourne, NC
- Average cloud cover in September: 35
The months with the most cloud cover are February and December (Cloud cover 43).
The months with the least cloud cover are June and July (Cloud cover 30).
Average visibility in September
Mount Mourne, NC
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Mount Mourne, North Carolina, USA
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