September weather forecastSpring Branch, TX
September
Weather in September
The first month of the autumn, September, is still a hot month in Spring Branch, Texas, with temperature in the range of an average low of 69.6°F (20.9°C) and an average high of 87.3°F (30.7°C).Temperature
A mild drop in Spring Branch's average high-temperature is observed in September, transitioning from 94.6°F (34.8°C) in August to a still hot 87.3°F (30.7°C). Spring Branch temperatures generally rest at a low of 69.6°F (20.9°C) during the September nights.Heat index
For most parts of September, the heat index is estimated at a torrid 98.6°F (37°C). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.Take note of the fact that heat index values are based on shaded circumstances with light airflows. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.
Humidity
In September, the average relative humidity in Spring Branch, Texas, is 70%.Rainfall
In Spring Branch, in September, it is raining for 14.7 days, with typically 2.76" (70mm) of accumulated precipitation. In Spring Branch, during the entire year, the rain falls for 146.4 days and collects up to 22.76" (578mm) of precipitation.Snowfall
March through December are months without snowfall in Spring Branch.Daylight
In Spring Branch, the average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 7:11 am and sunset at 7:55 pm. On the last day of September, in Spring Branch, sunrise is at 7:26 am and sunset at 7:19 pm CDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 6 during September translates into the following directions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Spring Branch, TX
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is August (94.6°F).
The month with the lowest average high temperature is January (59.4°F).
- Average low temperature in September: 69.6°F
The month with the highest average low temperature is August (73.9°F).
The coldest month (with the lowest average low temperature) is January (42.4°F).
Average pressure in September
Spring Branch, TX
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Spring Branch, TX
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is March (9.3mph).
The calmest month (with the lowest average wind speed) is September (6.3mph).
Average humidity in September
Spring Branch, TX
- Average humidity in September: 70%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (62%).
Average rainfall in September
Spring Branch, TX
- Average rainfall in September: 2.76"
The wettest month (with the highest rainfall) is May (4.29").
The driest month (with the least rainfall) is February (0.91").
Average rainfall days in September
Spring Branch, TX
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in September
Spring Branch, TX
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Spring Branch, TX
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Spring Branch, 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 24min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Spring Branch, TX
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is January (21.4 days).
The month with the least sunshine days is May (10 days).
Average UV index in September
Spring Branch, 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
Spring Branch, TX
- Average cloud cover in September: 34
The months with the most cloud cover are March and May (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Spring Branch, 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).
