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
With the onset of September, the average high-temperature subtly recedes from August's fiery hot 95.4°F (35.2°C) to a hot 86.7°F (30.4°C). Throughout the September nights, Desdemona encounters a low-temperature of 68.9°F (20.5°C).Heat index
Throughout September, the heat index is computed to be a tropical 93.2°F (34°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.Observations indicate that the heat index values are for shady locations with light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humidity
The average relative humidity in September is 62%.Rainfall
In September, the rain falls for 13 days. Throughout September, 1.89" (48mm) of precipitation is accumulated. In Desdemona, during the entire year, the rain falls for 116.5 days and collects up to 19.45" (494mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 21min.On the first day of the month, sunrise is at 7:09 am and sunset at 7:58 pm. On the last day of September, sunrise is at 7:28 am and sunset at 7:19 pm CDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 6 in September translates into these instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is 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 is the sunrise / sunset in September?
How many hours of sunshine does Desdemona have in September?
What is the UV index reading in September?
Average temperature in September
Desdemona, TX
- Average high temperature in September: 86.7°F
The warmest month (with the highest average high temperature) is August (95.4°F).
The months with the lowest average high temperature are January and December (56.8°F).
- Average low temperature in September: 68.9°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure in September
Desdemona, TX
- Average pressure in September: 29.96"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
Desdemona, TX
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is September (8mph).
Average humidity in September
Desdemona, TX
- Average humidity in September: 62%
The month with the highest relative humidity is May (68%).
The month with the lowest relative humidity is August (52%).
Average rainfall in September
Desdemona, TX
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is October (2.48").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in September
Desdemona, TX
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (13.6 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in September
Desdemona, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Desdemona, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.5 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
Desdemona, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in September
Desdemona, TX
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is January (23.7 days).
The month with the least sunshine days is May (14.2 days).
Average UV index in September
Desdemona, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Desdemona, TX
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Desdemona, 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).
Desdemona, Texas, USA
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