Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The beginning of September brings a slight decrease in the average high-temperature, transitioning from a torrid 95.5°F (35.3°C) in August to a hot 86.9°F (30.5°C). In Runaway Bay, the average temperature during the nights of September drops to an agreeable 68°F (20°C).Heat index
September's average heat index is appraised at a torrid 95°F (35°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.It is important to note that the heat index values are for shaded areas and light wind scenarios. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
In September, the average relative humidity in Runaway Bay, Texas, is 64%.Rainfall
In September, the rain falls for 12.5 days. Throughout September, 2.68" (68mm) of precipitation is accumulated. Throughout the year, there are 125.7 rainfall days, and 25.28" (642mm) of precipitation is accumulated.Snowfall
In Runaway Bay, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 22min.On the first day of September in Runaway Bay, sunrise is at 7:06 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:16 pm CDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 6 in September translates into the following instructions:
Deflect overexposure. Sun protection is a necessity. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Runaway Bay have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Runaway Bay have in September?
How high is the UV index in September?
Average temperature in September
Runaway Bay, TX
- Average high temperature in September: 86.9°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 (54.5°F).
- Average low temperature in September: 68°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).
Average pressure in September
Runaway Bay, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Runaway Bay, TX
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is September (7.2mph).
Average humidity in September
Runaway Bay, TX
- Average humidity in September: 64%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (55%).
Average rainfall in September
Runaway Bay, TX
- Average rainfall in September: 2.68"
The wettest month (with the highest rainfall) is October (3.23").
The driest month (with the least rainfall) is January (1.22").
Average rainfall days in September
Runaway Bay, TX
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in September
Runaway Bay, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Runaway Bay, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 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
Runaway Bay, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Runaway Bay, TX
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is January (23.6 days).
The month with the least sunshine days is May (13.4 days).
Average UV index in September
Runaway Bay, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Runaway Bay, TX
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Runaway Bay, 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).
Runaway Bay, Texas, USA
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