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
As August transitions into September, Clarendon sees a gentle drop in the average high-temperature, transitioning from a tropical 93.6°F (34.2°C) to a warm 84.7°F (29.3°C). Throughout the month of September, Clarendon sees a steady low-temperature average of 64.6°F (18.1°C).Heat index
The heat index in September is calculated to be a tropical 87.8°F (31°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.For clarity, heat index numbers account for light winds and areas under shade. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. 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 particularly relevant to 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.
Humidity
September is the most humid month, with an average relative humidity of 55%.Rainfall
In September, the rain falls for 10.7 days. Throughout September, 1.69" (43mm) of precipitation is accumulated. Throughout the year, there are 88.8 rainfall days, and 14.45" (367mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day in Clarendon is 12h and 23min.On the first day of September, sunrise is at 7:16 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 7:28 pm CDT.
Sunshine
In Clarendon, Texas, the average sunshine in September is 9.1h.UV index
In Clarendon, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 5 in September translates into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the most humid month?
What is the average humidity in September in Clarendon?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
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 in Clarendon?
How high is the UV index in September?
Average temperature in September
Clarendon, TX
- Average high temperature in September: 84.7°F
The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is December (51.1°F).
- Average low temperature in September: 64.6°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (32.4°F).
Average pressure in September
Clarendon, TX
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Clarendon, TX
- Average wind speed in September: 10.3mph
The windiest month (with the highest average wind speed) is April (13.5mph).
The calmest month (with the lowest average wind speed) is August (9.9mph).
Average humidity in September
Clarendon, TX
- Average humidity in September: 55%
The month with the highest relative humidity is September (55%).
The month with the lowest relative humidity is April (45%).
Average rainfall in September
Clarendon, TX
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is February (0.39").
Average rainfall days in September
Clarendon, TX
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is July (11.4 days).
The months with the least rainy days are January and February (3.2 days).
Average snowfall in September
Clarendon, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Clarendon, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Clarendon, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in September
Clarendon, TX
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is January (26.4 days).
The month with the least sunshine days is August (15.4 days).
Average UV index in September
Clarendon, TX
- Average UV index in September: 5
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 2).
Average cloud cover in September
Clarendon, TX
- Average cloud cover in September: 22
The month with the most cloud cover is April (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 16).
Average visibility in September
Clarendon, 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).
Clarendon, Texas, USA
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