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 September, the meteorological conditions change slightly, with the average high-temperature moving from a torrid 95°F (35°C) in August to a hot 88.7°F (31.5°C). Longview, in September, witnesses an average low-temperature of 67.5°F (19.7°C).Heat index
The average heat index in September is computed to be a fiery hot 102.2°F (39°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.It is essential to grasp that the heat index's numbers are for shade and light wind settings. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.
Humidity
In Longview, the average relative humidity in September is 69%.Rainfall
September is the month with the least rainfall. Rain falls for 11.8 days and accumulates 1.69" (43mm) of precipitation.Snowfall
In Longview, Texas, snow does not fall in April through December.Daylight
In September, the average length of the day in Longview is 12h and 22min.On the first day of September, sunrise is at 6:54 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:04 pm CDT.
Sunshine
The average sunshine in September in Longview is 9.1h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Shield from overexposure. Defense against sun-related harm is required. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
How hot is September in Longview?
What is the average humidity in September in Longview?
What is the driest month in Longview?
How much does it rain in Longview in September?
When it does not snow in Longview?
How many hours of daylight does Longview have in September?
When are sunrise and sunset in September in Longview?
How many hours of sunshine does Longview have in September?
What is the UV index reading in September in Longview?
Average temperature in September
Longview, TX
- Average high temperature in September: 88.7°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: 67.5°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
Longview, 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 (29.93"Hg).
Average wind speed in September
Longview, TX
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is September (5.3mph).
Average humidity in September
Longview, TX
- Average humidity in September: 69%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Longview, TX
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is April (3.86").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in September
Longview, TX
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
Longview, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Longview, TX
- Average snowfall days in September: 0 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, September and October (0 days).
Average daylight in September /
Average sunshine in September
Longview, 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: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Longview, TX
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is January (19.7 days).
The month with the least sunshine days is February (13.2 days).
Average UV index in September
Longview, TX
- Average UV index in September: 6
The months with the highest UV index are May, 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
Longview, TX
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Longview, TX
- Average visibility in September: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Longview, Texas, USA
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