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
In Manchaca, entering September brings a subtle temperature decrement, reducing from August's fiery hot 95.7°F (35.4°C) to a tropical 87.8°F (31°C). Manchaca, in September, witnesses an average low-temperature of 70.7°F (21.5°C).Heat index
The heat index value during September is evaluated at a sweltering 98.6°F (37°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.Note that heat index values are valued for light wind and location in the shade. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.
Humidity
In September, the average relative humidity is 69%.Rainfall
In September, the rain falls for 16.4 days. Throughout September, 3.27" (83mm) of precipitation is accumulated. In Manchaca, during the entire year, the rain falls for 148 days and collects up to 24.92" (633mm) of precipitation.Snowfall
In Manchaca, snow does not fall in March through October.Daylight
The average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 7:08 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:17 pm CDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
In Manchaca, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 6 suggests this advice:
Resist extreme sun exposure. Guarding against solar damage is essential. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
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 in Manchaca?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Manchaca, TX
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is August (95.7°F).
The month with the lowest average high temperature is January (59.4°F).
- Average low temperature in September: 70.7°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 (42.4°F).
Average pressure in September
Manchaca, 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 (29.91"Hg).
Average wind speed in September
Manchaca, TX
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is March (9.3mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).
Average humidity in September
Manchaca, TX
- Average humidity in September: 69%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Manchaca, TX
- Average rainfall in September: 3.27"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in September
Manchaca, TX
- Average rainfall days in September: 16.4 days
The month with the highest number of rainy days is September (16.4 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in September
Manchaca, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.16").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
Manchaca, TX
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.4 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
Manchaca, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 8h and 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Manchaca, TX
- Average sunshine days in September: 11.9 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in September
Manchaca, 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
Manchaca, TX
- Average cloud cover in September: 34
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Manchaca, 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).
Manchaca, Texas, USA
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