September weather forecastFloresville, TX
September
Weather in September
September, the first month of the autumn in Floresville, is also a hot month, with temperature in the range of an average high of 90°F (32.2°C) and an average low of 72.1°F (22.3°C).Temperature
September reveals a small adjustment in temperature, transitioning from an average high of a sweltering 97°F (36.1°C) in August to a hot 90°F (32.2°C). September nights in Floresville cool down to an average low-temperature of 72.1°F (22.3°C).Heat index
September's heat index is estimated at a scorching 104°F (40°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are quite important for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.
Humidity
In Floresville, the average relative humidity in September is 68%.Rainfall
In Floresville, Texas, in September, during 15.5 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. In Floresville, during the entire year, the rain falls for 123.5 days and collects up to 14.02" (356mm) of precipitation.Snowfall
January, March through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 19min.On the first day of the month, sunrise is at 7:10 am and sunset at 7:54 pm. On the last day of September, in Floresville, sunrise is at 7:25 am and sunset at 7:19 pm CDT.
Sunshine
The average sunshine in September in Floresville is 8.5h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Floresville, TX
- Average high temperature in September: 90°F
The warmest month (with the highest average high temperature) is August (97°F).
The month with the lowest average high temperature is January (62.2°F).
- Average low temperature in September: 72.1°F
The month with the highest average low temperature is August (76.1°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).
Average pressure in September
Floresville, TX
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Floresville, TX
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is May (9.1mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in September
Floresville, TX
- Average humidity in September: 68%
The months with the highest relative humidity are March and May (74%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Floresville, TX
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is February (0.39").
Average rainfall days in September
Floresville, TX
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is September (15.5 days).
The month with the least rainy days is November (7.3 days).
Average snowfall in September
Floresville, TX
- Average snowfall in September: 0"
The months with the highest snowfall are February and December (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Floresville, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Floresville, TX
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Floresville, TX
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is January (21.1 days).
The month with the least sunshine days is September (12.8 days).
Average UV index in September
Floresville, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Floresville, TX
- Average cloud cover in September: 32
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Floresville, 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).
