September weather forecastLake Wylie, SC
September
Weather in September
September, the first month of the autumn in Lake Wylie, is still a warm month, with an average temperature varying between 83.1°F (28.4°C) and 63.7°F (17.6°C).Temperature
September's arrival signals a moderate reduction in the average high-temperature, easing from a tropical 88.9°F (31.6°C) in August to a warm 83.1°F (28.4°C). Lake Wylie throughout September, experiences an average nighttime temperature of 63.7°F (17.6°C).Heat index
For September, the heat index is computed to be a tropical 89.6°F (32°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.Heat index data is primarily for areas with shade and subjected to light winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humidity
In September, the average relative humidity is 72%.Rainfall
In Lake Wylie, during September, the rain falls for 12.5 days and regularly aggregates up to 1.93" (49mm) of precipitation. Throughout the year, there are 152.2 rainfall days, and 29.69" (754mm) of precipitation is accumulated.Snowfall
In Lake Wylie, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:57 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:09 pm EDT.
Sunshine
In Lake Wylie, South Carolina, the average sunshine in September is 8.7h.UV index
In Lake Wylie, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 5 during September translates into the following directions:
Adopt protective measures - Suggestions to resist sunburn are offered. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lake Wylie, SC
- Average high temperature in September: 83.1°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (48.9°F).
- Average low temperature in September: 63.7°F
The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in September
Lake Wylie, SC
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Lake Wylie, SC
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Lake Wylie, SC
- Average humidity in September: 72%
The months with the highest relative humidity are May and December (75%).
The months with the lowest relative humidity are June and July (70%).
Average rainfall in September
Lake Wylie, SC
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is August (3.19").
The driest month (with the least rainfall) is October (1.85").
Average rainfall days in September
Lake Wylie, SC
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in September
Lake Wylie, SC
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.48").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Lake Wylie, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Lake Wylie, SC
- 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 42min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Lake Wylie, SC
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in September
Lake Wylie, SC
- 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 and December (UV index 2).
Average cloud cover in September
Lake Wylie, SC
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in September
Lake Wylie, SC
- 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).
