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
With the arrival of September, Lewisville notices a mild change in the average high-temperature, sliding from August's tropical 87.6°F (30.9°C) to a moderately hot 81.1°F (27.3°C). During September, Lewisville consistently records a temperature low averaging an enjoyable 61.3°F (16.3°C).Heat index
September's heat index is estimated at a hot 86°F (30°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Humidity
In Lewisville, North Carolina, the average relative humidity in September is 74%.Rainfall
The month with the least rainfall in Lewisville is September, when the rain falls for 12.6 days and typically collects 2.01" (51mm) of precipitation.Snowfall
In Lewisville, snow does not fall in April through October.Daylight
In Lewisville, North Carolina, the average length of the day in September is 12h and 24min.On the first day of September in Lewisville, sunrise is at 6:53 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:06 pm EDT.
Sunshine
In Lewisville, North Carolina, the average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index in Lewisville is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 5 during September leads to these instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
What are the temperatures in Lewisville in September?
What is the average humidity in September in Lewisville?
What is the driest month in Lewisville?
How much does it rain in Lewisville in September?
When it does not snow in Lewisville?
What is the average length of the day in September in Lewisville?
What time are sunrise and sunset in September in Lewisville?
How long on average sun shines in September in Lewisville?
What is the UV index intensity in September in Lewisville?
Average temperature in September
Lewisville, NC
- Average high temperature in September: 81.1°F
The warmest month (with the highest average high temperature) is July (89.8°F).
The month with the lowest average high temperature is January (45.9°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in September
Lewisville, 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 (29.98"Hg).
Average wind speed in September
Lewisville, NC
- Average wind speed in September: 4.9mph
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
Lewisville, NC
- Average humidity in September: 74%
The months with the highest relative humidity are May and December (75%).
The month with the lowest relative humidity is July (69%).
Average rainfall in September
Lewisville, NC
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is April (3.07").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in September
Lewisville, NC
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in September
Lewisville, NC
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Lewisville, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.9 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
Lewisville, 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: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Lewisville, NC
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in September
Lewisville, 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
Lewisville, NC
- Average cloud cover in September: 35
The months with the most cloud cover are February and March (Cloud cover 42).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility in September
Lewisville, NC
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Lewisville, North Carolina, USA
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