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
With the arrival of September, Round Top notices a mild change in the average high-temperature, sliding from August's sweltering 95.5°F (35.3°C) to a hot 88.3°F (31.3°C). The low-temperature in Round Top, Texas, averages to a pleasant 71.1°F (21.7°C) during the nights of September.Heat index
The heat index value during September is computed to be a sweltering 102.2°F (39°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. 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. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.
Humidity
In Round Top, the average relative humidity in September is 73%.Rainfall
In Round Top, in September, it is raining for 15.6 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, there are 139.2 rainfall days, and 15.47" (393mm) of precipitation is accumulated.Snowfall
February through November are months without snowfall in Round Top.Daylight
The average length of the day in September in Round Top is 12h and 20min.On the first day of the month, sunrise is at 7:04 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:13 pm CDT.
Sunshine
In September, the average sunshine in Round Top is 8.4h.UV index
In September, the average daily maximum UV index in Round Top is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. 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. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
How hot is September in Round Top?
What is the average humidity in September in Round Top?
How many days does it rain in September in Round Top?
When it does not snow in Round Top?
What is the average length of the day in September in Round Top?
When are sunrise and sunset in September in Round Top?
How long on average sun shines in September in Round Top?
How high is the UV index in September in Round Top?
Average temperature in September
Round Top, TX
- Average high temperature in September: 88.3°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (59.4°F).
- Average low temperature in September: 71.1°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 (43.7°F).
Average pressure in September
Round Top, 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 (29.92"Hg).
Average wind speed in September
Round Top, TX
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is September (6mph).
Average humidity in September
Round Top, TX
- Average humidity in September: 73%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (66%).
Average rainfall in September
Round Top, TX
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in September
Round Top, TX
- Average rainfall days in September: 15.6 days
The month with the highest number of rainy days is September (15.6 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in September
Round Top, TX
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Round Top, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 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
Round Top, 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 month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Round Top, TX
- Average sunshine days in September: 11.7 days
The month with the most sunshine days is January (20.2 days).
The month with the least sunshine days is June (11 days).
Average UV index in September
Round Top, 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
Round Top, TX
- Average cloud cover in September: 33
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Round Top, TX
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, August, September, October, November and December (6mi).
The months with the lowest visibility are May, June and July (5mi).
Round Top, Texas, USA
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