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
A minor decrease in the average high-temperature is observed during September, shifting from a very hot 95°F (35°C) in August to a tropical 88°F (31.1°C). In Van, an average low-temperature of 67.6°F (19.8°C) is recorded during September nights.Heat index
The heat index value during September is appraised at a sweltering 100.4°F (38°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.Understand that the heat index values take into account shaded locations and mild winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. 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. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.
Humidity
In September, the average relative humidity is 69%.Rainfall
In Van, during September, the rain falls for 11.5 days and regularly aggregates up to 0.83" (21mm) of precipitation. In Van, Texas, during the entire year, the rain falls for 110.7 days and collects up to 14.06" (357mm) of precipitation.Snowfall
In Van, snow does not fall in April through December.Daylight
In Van, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:57 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:08 pm CDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 6 in September suggests the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Van during September?
What is the average humidity in September in Van?
How many days does it rain in September in Van?
When it does not snow in Van?
What is the average length of the day in September in Van?
When are sunrise and sunset in September in Van?
How many hours of sunshine does Van have in September?
What is the UV index intensity in September in Van?
Average temperature in September
Van, TX
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (54.3°F).
- Average low temperature in September: 67.6°F
The month with the highest average low temperature is August (73.6°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).
Average pressure in September
Van, TX
- Average pressure in September: 29.98"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
Van, TX
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).
Average humidity in September
Van, TX
- Average humidity in September: 69%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is August (64%).
Average rainfall in September
Van, TX
- Average rainfall in September: 0.83"
The wettest months (with the highest rainfall) are April and October (1.81").
The driest months (with the least rainfall) are August and November (0.79").
Average rainfall days in September
Van, TX
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is September (11.5 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in September
Van, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.24").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Van, TX
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Van, 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 6min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Van, TX
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is October (22 days).
The month with the least sunshine days is September (16.4 days).
Average UV index in September
Van, 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, November and December (UV index 3).
Average cloud cover in September
Van, TX
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Van, 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).
Van, Texas, USA
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