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
A mild drop in Plymouth's average high-temperature is observed in September, transitioning from a hot 87.3°F (30.7°C) in August to a warm 81.9°F (27.7°C). During September, the temperature tends to dip to an average of 65.5°F (18.6°C) at night.Heat index
In September, the heat index is computed to be a tropical 87.8°F (31°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.Observations indicate that the heat index values are for shady locations with light wind. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humidity
In Plymouth, the average relative humidity in September is 79%.Rainfall
In Plymouth, during September, the rain falls for 14 days and regularly aggregates up to 2.87" (73mm) of precipitation. Throughout the year, there are 165 rainfall days, and 28.74" (730mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 6:39 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:51 pm EDT.
Sunshine
In September, the average sunshine is 9.2h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 suggests this advice:
Take precautions - Protection against sunburn is recommended. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature 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 Plymouth have in September?
When is the sunrise / sunset in September in Plymouth?
How many hours of sunshine does Plymouth have in September?
How high is the UV index in September?
Average temperature in September
Plymouth, NC
- Average high temperature in September: 81.9°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (48.9°F).
- Average low temperature in September: 65.5°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (33.8°F).
Average pressure in September
Plymouth, NC
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Plymouth, NC
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Plymouth, NC
- Average humidity in September: 79%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are January and April (76%).
Average rainfall in September
Plymouth, NC
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is August (3.23").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days in September
Plymouth, NC
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is October (9.3 days).
Average snowfall in September
Plymouth, NC
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Plymouth, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.7 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
Plymouth, 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 48min).
- Average sunshine in September: 9h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Plymouth, NC
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (8.8 days).
Average UV index in September
Plymouth, NC
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Plymouth, NC
- Average cloud cover in September: 37
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 32).
Average visibility in September
Plymouth, NC
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Plymouth, North Carolina, USA
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