September weather forecastSylva, NC
September
Weather in September
The first month of the autumn, September, is still a warm month in Sylva, North Carolina, with an average temperature varying between 74.7°F (23.7°C) and 54.1°F (12.3°C).Temperature
As September takes hold, the average high-temperature is a still moderately hot 74.7°F (23.7°C), nearly mirroring that of the previous month. Sylva reports a consistent average low-temperature of 54.1°F (12.3°C) throughout September nights.Humidity
The months with the highest humidity in Sylva are May and September, with an average relative humidity of 81%.Rainfall
The month with the least rainfall is September, when the rain falls for 16.2 days and typically collects 2.56" (65mm) of precipitation.Snowfall
In Sylva, snow does not fall in May through September.Daylight
The average length of the day in September in Sylva is 12h and 23min.On the first day of the month, sunrise is at 7:05 am and sunset at 7:59 pm. On the last day of September, in Sylva, sunrise is at 7:27 am and sunset at 7:17 pm EDT.
Sunshine
The average sunshine in September in Sylva is 8.1h.UV index
In September, the average daily maximum UV index in Sylva is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 during September translates into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sylva, NC
- Average high temperature in September: 74.7°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (42.6°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in September
Sylva, NC
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Sylva, NC
- Average wind speed in September: 3.4mph
The windiest months (with the highest average wind speed) are January, February and April (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.1mph).
Average humidity in September
Sylva, NC
- Average humidity in September: 81%
The months with the highest relative humidity are May and September (81%).
The month with the lowest relative humidity is November (77%).
Average rainfall in September
Sylva, NC
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is July (4.33").
The driest month (with the least rainfall) is September (2.56").
Average rainfall days in September
Sylva, NC
- Average rainfall days in September: 16.2 days
The month with the highest number of rainy days is July (20.9 days).
The month with the least rainy days is November (10.7 days).
Average snowfall in September
Sylva, NC
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.95").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Sylva, NC
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (5.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sylva, 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 6min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Sylva, NC
- Average sunshine days in September: 11.5 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is July (8.8 days).
Average UV index in September
Sylva, NC
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Sylva, NC
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 37).
Average visibility in September
Sylva, NC
- Average visibility in September: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).
