September weather forecastMills River, NC
September
Weather in September
September, the first month of the autumn in Mills River, is also a moderately hot month, with an average temperature ranging between min 55.8°F (13.2°C) and max 77.2°F (25.1°C).Temperature
With the onset of September, the average high-temperature subtly recedes from August's warm 82.6°F (28.1°C) to a still moderately hot 77.2°F (25.1°C). An average low-temperature of 55.8°F (13.2°C) is noted during the nights in September in Mills River.Humidity
The months with the highest humidity in Mills River are May, September and December, with an average relative humidity of 78%.Rainfall
September is the month with the least rainfall. Rain falls for 10.1 days and accumulates 0.91" (23mm) of precipitation.Snowfall
In Mills River, snow does not fall in May through October.Daylight
In Mills River, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:24 am and sunset at 7:15 pm EDT.
Sunshine
In Mills River, the average sunshine in September is 8.2h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mills River, NC
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (44.2°F).
- Average low temperature in September: 55.8°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (28°F).
Average pressure in September
Mills River, NC
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Mills River, NC
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is January (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in September
Mills River, NC
- Average humidity in September: 78%
The months with the highest relative humidity are May, September and December (78%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in September
Mills River, NC
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is December (1.65").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in September
Mills River, NC
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is July (15 days).
The month with the least rainy days is November (6.8 days).
Average snowfall in September
Mills River, NC
- Average snowfall in September: 0"
The month with the highest snowfall is December (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Mills River, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mills River, NC
- Average daylight in September: 12h and 24min
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 12min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Mills River, NC
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (12.6 days).
Average UV index in September
Mills River, NC
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Mills River, NC
- Average cloud cover in September: 37
The months with the most cloud cover are February, March and December (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in September
Mills River, NC
- Average visibility in September: 5mi
The months with the highest visibility are February, June, July and November (6mi).
The months with the lowest visibility are January, March, April, May, August, September, October and December (5mi).
