September weather forecastTennyson, TX
September
Weather in September
The first month of the autumn, September, is still a hot month in Tennyson, Texas, with temperature in the range of an average low of 68.7°F (20.4°C) and an average high of 87.1°F (30.6°C).Temperature
September indicates a minor shift in the average high-temperature, from August's fiery hot 95.5°F (35.3°C) to a tropical 87.1°F (30.6°C). Tennyson records a consistent low-temperature of 68.7°F (20.4°C) during September nights.Heat index
Throughout September, the heat index is computed to be a tropical 91.4°F (33°C). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.Heat index determinations are made taking into account the shade and light air movements. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
September and November, with an average relative humidity of 57%, are the most humid months.Rainfall
In September, the rain falls for 11.3 days. Throughout September, 1.93" (49mm) of precipitation is accumulated. In Tennyson, during the entire year, the rain falls for 89.1 days and collects up to 15.59" (396mm) of precipitation.Snowfall
In Tennyson, snow does not fall in April through October.Daylight
In Tennyson, the average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 7:17 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:26 pm CDT.
Sunshine
In Tennyson, the average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A typical high UV index of 6 in September suggests the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. 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
Tennyson, TX
- Average high temperature in September: 87.1°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The months with the lowest average high temperature are January and December (57.4°F).
- Average low temperature in September: 68.7°F
The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).
Average pressure in September
Tennyson, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Tennyson, TX
- Average wind speed in September: 9.7mph
The windiest month (with the highest average wind speed) is April (13.5mph).
The calmest month (with the lowest average wind speed) is September (9.7mph).
Average humidity in September
Tennyson, TX
- Average humidity in September: 57%
The months with the highest relative humidity are September and November (57%).
The month with the lowest relative humidity is August (46%).
Average rainfall in September
Tennyson, TX
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in September
Tennyson, TX
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is May (11.4 days).
The month with the least rainy days is January (3.6 days).
Average snowfall in September
Tennyson, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Tennyson, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.5 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
Tennyson, TX
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 8h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Tennyson, TX
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is January (26.3 days).
The month with the least sunshine days is September (16.1 days).
Average UV index in September
Tennyson, TX
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Tennyson, TX
- Average cloud cover in September: 26
The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Tennyson, 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).
