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 beginning of September, the average high-temperature shows a small decrease, transitioning from a sweltering 95°F (35°C) in August to a tropical 86.9°F (30.5°C). In the month of September, Prosper records a consistent average low-temperature of 69.3°F (20.7°C).Heat index
Throughout September, the heat index is appraised at a very hot 95°F (35°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.Understand that the heat index values take into account shaded locations and mild winds. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.
Humidity
The average relative humidity in September is 64%.Rainfall
In September, the rain falls for 14.7 days. Throughout September, 2.99" (76mm) of precipitation is accumulated. In Prosper, during the entire year, the rain falls for 139.7 days and collects up to 31.73" (806mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Prosper, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:02 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:12 pm CDT.
Sunshine
The average sunshine in September in Prosper, Texas, is 8.7h.UV index
In Prosper, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.Note: The average daily UV index of 6 in September transforms into the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Prosper?
What is the average humidity in September in Prosper?
How many days does it rain in September in Prosper?
When it does not snow in Prosper?
What is the average length of the day in September in Prosper?
What time are sunrise and sunset in September in Prosper?
How many hours of sunshine does Prosper have in September?
What is the UV index intensity in September in Prosper?
Average temperature in September
Prosper, TX
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (53.2°F).
- Average low temperature in September: 69.3°F
The month with the highest average low temperature is July (75.6°F).
The coldest month (with the lowest average low temperature) is January (37.8°F).
Average pressure in September
Prosper, 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 (29.9"Hg).
Average wind speed in September
Prosper, TX
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is March (10.2mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in September
Prosper, TX
- Average humidity in September: 64%
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (57%).
Average rainfall in September
Prosper, TX
- Average rainfall in September: 2.99"
The wettest month (with the highest rainfall) is October (3.94").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in September
Prosper, TX
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (7 days).
Average snowfall in September
Prosper, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Prosper, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 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
Prosper, 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: 8h and 4min
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 42min).
Average sunshine days in September
Prosper, TX
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is May (13.6 days).
Average UV index in September
Prosper, 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 November and December (UV index 3).
Average cloud cover in September
Prosper, TX
- Average cloud cover in September: 27
The months with the most cloud cover are February and March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Prosper, 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).
Prosper, Texas, USA
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