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
The average high-temperature slightly decreases in September, shifting from a moderately hot 79.2°F (26.2°C) in August to a still warm 73.8°F (23.2°C). September nights in Jefferson are marked by an average low-temperature of 53.6°F (12°C).Humidity
May and September, with an average relative humidity of 80%, are the most humid months.Rainfall
September is the month with the least rainfall in Jefferson. Rain falls for 10 days and accumulates 1.26" (32mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Jefferson, North Carolina, is 12h and 24min.On the first day of the month, sunrise is at 6:57 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:10 pm EDT.
Sunshine
In September, the average sunshine in Jefferson is 8h.UV index
The average daily maximum UV index in September in Jefferson is 4. A UV Index estimate 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 in September translates into this advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Jefferson in September?
What is the most humid month in Jefferson?
What is the average humidity in September in Jefferson?
What is the driest month in Jefferson?
How many days does it rain in September in Jefferson?
When it does not snow in Jefferson?
Does it snow in Jefferson in September?
What is the average length of the day in September in Jefferson?
When are sunrise and sunset in September in Jefferson?
How many hours of sunshine does Jefferson have in September?
What is the UV index intensity in September in Jefferson?
Average temperature in September
Jefferson, NC
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in September
Jefferson, NC
- Average pressure in September: 30.06"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
Jefferson, NC
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Jefferson, NC
- Average humidity in September: 80%
The months with the highest relative humidity are May and September (80%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Jefferson, NC
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is September (1.26").
Average rainfall days in September
Jefferson, NC
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is November (6.1 days).
Average snowfall in September
Jefferson, NC
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Jefferson, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Jefferson, NC
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The months with the least sunshine are January and December (Average sunshine: 5h and 12min).
Average sunshine days in September
Jefferson, NC
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is July (14.2 days).
Average UV index in September
Jefferson, 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, November and December (UV index 2).
Average cloud cover in September
Jefferson, NC
- Average cloud cover in September: 43
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and July (Cloud cover 36).
Average visibility in September
Jefferson, NC
- Average visibility in September: 4mi
The month with the highest visibility is November (6mi).
The month with the lowest visibility is September (4mi).
Jefferson, North Carolina, USA
Weather forecast for your location
2. Allow the app to use your location