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 September commences, the average high-temperature subtly reduces, transitioning from a torrid 95°F (35°C) in August to a tropical 86.2°F (30.1°C). Throughout September, Gainesville experiences a low-temperature average of 68°F (20°C).Heat index
The heat index for September is computed to be a tropical 93.2°F (34°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical 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.
Humidity
In September, the average relative humidity is 65%.Rainfall
In Gainesville, during September, the rain falls for 12.8 days and regularly aggregates up to 3.03" (77mm) of precipitation. Throughout the year, in Gainesville, Texas, there are 130.7 rainfall days, and 29.33" (745mm) of precipitation is accumulated.Snowfall
In Gainesville, snow does not fall in April through October.Daylight
In September, the average length of the day in Gainesville is 12h and 22min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:13 pm CDT.
Sunshine
In Gainesville, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Gainesville, TX
- Average high temperature in September: 86.2°F
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (52.5°F).
- Average low temperature in September: 68°F
The months with the highest average low temperature are July and August (74.3°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).
Average pressure in September
Gainesville, TX
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Gainesville, TX
- Average wind speed in September: 7mph
The windiest months (with the highest average wind speed) are March and April (10.5mph).
The calmest month (with the lowest average wind speed) is September (7mph).
Average humidity in September
Gainesville, TX
- Average humidity in September: 65%
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (57%).
Average rainfall in September
Gainesville, TX
- Average rainfall in September: 3.03"
The wettest month (with the highest rainfall) is October (3.78").
The driest month (with the least rainfall) is January (1.42").
Average rainfall days in September
Gainesville, TX
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in September
Gainesville, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Gainesville, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.8 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
Gainesville, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in September
Gainesville, TX
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is January (22.9 days).
The month with the least sunshine days is May (15.1 days).
Average UV index in September
Gainesville, 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 and December (UV index 3).
Average cloud cover in September
Gainesville, TX
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Gainesville, 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).
Gainesville, Texas, USA
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