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 start of September comes with a small reduction in the average high-temperature, subtly receding from 85.3°F (29.6°C) in August to a still moderately hot 79.2°F (26.2°C). During the month of September, the temperature falls to an average of 58.6°F (14.8°C).Humidity
In Mount Airy, the average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall. Rain falls for 13.2 days and accumulates 1.69" (43mm) of precipitation.Snowfall
May through October are months without snowfall in Mount Airy, North Carolina.Daylight
In Mount Airy, the average length of the day in September is 12h and 24min.On the first day of September in Mount Airy, sunrise is at 6:54 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:06 pm EDT.
Sunshine
In Mount Airy, the average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index in Mount Airy is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the UV index of 5 transforms into the following advice:
Heed the precautions - It is counselled to guard against solar damage. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
What are September temperatures in Mount Airy?
What is the average humidity in September in Mount Airy?
What is the driest month in Mount Airy?
How many days does it rain in September in Mount Airy?
When it does not snow in Mount Airy?
How many hours of daylight does Mount Airy have in September?
When are sunrise and sunset in September in Mount Airy?
How long on average sun shines in September in Mount Airy?
How high is the UV index in September in Mount Airy?
Average temperature in September
Mount Airy, NC
- Average high temperature in September: 79.2°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (43.5°F).
- Average low temperature in September: 58.6°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in September
Mount Airy, 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 (29.98"Hg).
Average wind speed in September
Mount Airy, NC
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Mount Airy, NC
- Average humidity in September: 75%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall in September
Mount Airy, NC
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is April (2.99").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in September
Mount Airy, NC
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in September
Mount Airy, NC
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.76").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Mount Airy, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Mount Airy, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Mount Airy, NC
- Average sunshine days in September: 15 days
The months with the most sunshine days are October and November (20.4 days).
The month with the least sunshine days is May (11.6 days).
Average UV index in September
Mount Airy, 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, February and December (UV index 2).
Average cloud cover in September
Mount Airy, NC
- Average cloud cover in September: 35
The month with the most cloud cover is March (Cloud cover 43).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility in September
Mount Airy, NC
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Mount Airy, North Carolina, USA
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