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
Diana's September weather features a light decline in high-temperatures, reducing from 94.8°F (34.9°C) in August to a still hot 88.2°F (31.2°C). The average low-temperature, in September, is a comfortable 67.1°F (19.5°C).Heat index
September's heat index is computed to be a fiery hot 100.4°F (38°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.It is important to note that the heat index values are for shaded areas and light wind scenarios. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.
Humidity
The average relative humidity in September is 69%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.8 days and typically collects 1.65" (42mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In Diana, the average length of the day in September 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
In Diana, the average sunshine in September is 9.2h.UV index
In Diana, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 6 in September transforms into this advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow in Diana?
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
Diana, TX
- Average high temperature in September: 88.2°F
The warmest month (with the highest average high temperature) is August (94.8°F).
The month with the lowest average high temperature is January (53.8°F).
- Average low temperature in September: 67.1°F
The months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in September
Diana, 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
Diana, TX
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Diana, 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 (66%).
Average rainfall in September
Diana, TX
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is April (3.78").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in September
Diana, TX
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is August (15.1 days).
The month with the least rainy days is October (9.9 days).
Average snowfall in September
Diana, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Diana, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 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
Diana, 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 0min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Diana, TX
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is February (12.8 days).
Average UV index in September
Diana, 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
Diana, TX
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Diana, 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).
Diana, Texas, USA
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