September weather forecastMemphis, TX
September
Weather in September
The first month of the autumn, September, is also a hot month in Memphis, Texas, with an average temperature fluctuating between 86°F (30°C) and 66.4°F (19.1°C).Temperature
September's arrival correlates with a reduction in the average high-temperature, down from a sweltering 95.2°F (35.1°C) in August to a hot 86°F (30°C). An average low-temperature of 66.4°F (19.1°C) is expected during September.Heat index
September's mean heat index is estimated at a hot 89.6°F (32°C). Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Humidity
The most humid month is September, with an average relative humidity of 55%.Rainfall
In Memphis, in September, during 9.6 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. In Memphis, during the entire year, the rain falls for 87.5 days and collects up to 15.55" (395mm) of precipitation.Snowfall
In Memphis, snow does not fall in May through October.Daylight
The average length of the day in September in Memphis is 12h and 23min.On the first day of the month, sunrise is at 7:15 am and sunset at 8:08 pm. On the last day of September, sunrise is at 7:36 am and sunset at 7:27 pm CDT.
Sunshine
In Memphis, the average sunshine in September is 9.2h.UV index
In Memphis, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index, 6 during September, leads to the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Memphis, TX
- Average high temperature in September: 86°F
The warmest month (with the highest average high temperature) is July (95.5°F).
The month with the lowest average high temperature is December (52.5°F).
- Average low temperature in September: 66.4°F
The month with the highest average low temperature is July (74.8°F).
The coldest month (with the lowest average low temperature) is January (33.8°F).
Average pressure in September
Memphis, TX
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Memphis, TX
- Average wind speed in September: 10mph
The windiest month (with the highest average wind speed) is April (13.2mph).
The calmest months (with the lowest average wind speed) are January and August (9.7mph).
Average humidity in September
Memphis, TX
- Average humidity in September: 55%
The month with the highest relative humidity is September (55%).
The month with the lowest relative humidity is August (46%).
Average rainfall in September
Memphis, TX
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days in September
Memphis, TX
- Average rainfall days in September: 9.6 days
The month with the highest number of rainy days is May (10.6 days).
The months with the least rainy days are February and November (3.8 days).
Average snowfall in September
Memphis, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Memphis, TX
- 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 June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Memphis, TX
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 12min
The months with the most sunshine are June and July (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
Memphis, TX
- Average sunshine days in September: 18.9 days
The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is May (16.8 days).
Average UV index in September
Memphis, TX
- Average UV index in September: 6
The month with the highest UV index is June (UV index 8).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Memphis, TX
- Average cloud cover in September: 21
The months with the most cloud cover are March and April (Cloud cover 24).
The months with the least cloud cover are June and August (Cloud cover 16).
Average visibility in September
Memphis, TX
- 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).
