September weather forecastRaymondville, TX
September
Weather in September
The first month of the autumn, September, is also a hot month in Raymondville, Texas, with an average temperature varying between 77.9°F (25.5°C) and 90.5°F (32.5°C).Temperature
The shift into September reveals an average high-temperature of a tropical 90.5°F (32.5°C), closely mirroring August's climate. Raymondville records a steady low-temperature average of 77.9°F (25.5°C) during September.Heat index
The heat index in September is calculated to be a scorching 107.6°F (42°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.Evaluating the heat index requires understanding its values in the shade and with gentle winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.
Humidity
The average relative humidity in September in Raymondville is 69%.Rainfall
The month with the most rainfall is September, when the rain falls for 17.2 days and typically aggregates up to 2.64" (67mm) of precipitation.Daylight
The average length of the day in September is 12h and 18min.On the first day of September, sunrise is at 7:11 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:18 pm CDT.
Sunshine
In Raymondville, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: The UV index of 7 in September translates into these instructions:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Raymondville, TX
- Average high temperature in September: 90.5°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 (68.5°F).
- Average low temperature in September: 77.9°F
The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (54.1°F).
Average pressure in September
Raymondville, TX
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Raymondville, TX
- Average wind speed in September: 8.9mph
The windiest months (with the highest average wind speed) are April and May (11.9mph).
The calmest month (with the lowest average wind speed) is September (8.9mph).
Average humidity in September
Raymondville, TX
- Average humidity in September: 69%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Raymondville, TX
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is September (2.64").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in September
Raymondville, TX
- Average rainfall days in September: 17.2 days
The month with the highest number of rainy days is September (17.2 days).
The month with the least rainy days is July (7.4 days).
Average daylight in September /
Average sunshine in September
Raymondville, TX
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Raymondville, TX
- Average sunshine days in September: 10.6 days
The month with the most sunshine days is July (22.1 days).
The month with the least sunshine days is September (10.6 days).
Average UV index in September
Raymondville, TX
- Average UV index in September: 7
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
Raymondville, TX
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Raymondville, 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).
