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 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
September's advent denotes a minor fluctuation in the average high-temperature to a still tropical 87.3°F (30.7°C) from August's 90.3°F (32.4°C). During September, Clarksville witnesses a consistent average low-temperature of 70.2°F (21.2°C).Heat index
The heat index value for September is computed to be a sweltering 102.2°F (39°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.Evaluating the heat index requires understanding its values in the shade and with gentle winds. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Rising body temperatures due to excess heat retention could signify impending heat disorders.
Humidity
The months with the highest humidity are September and December, with an average relative humidity of 78%.Rainfall
In Clarksville, during September, the rain falls for 14.3 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Clarksville, during the entire year, the rain falls for 140 days and collects up to 19.8" (503mm) of precipitation.Snowfall
In Clarksville, snow does not fall in April through December.Daylight
In September, the average length of the day in Clarksville, Florida, is 12h and 20min.On the first day of the month, sunrise is at 6:17 am and sunset at 7:03 pm. On the last day of September, sunrise is at 6:34 am and sunset at 6:26 pm CDT.
Sunshine
The average sunshine in September in Clarksville is 8.7h.UV index
In September, the average daily maximum UV index in Clarksville is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 6 in September translates into the following instructions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Clarksville in September?
What are the most humid months in Clarksville?
What is the average humidity in September in Clarksville?
How many days does it rain in September in Clarksville?
When it does not snow in Clarksville?
What is the average length of the day in September in Clarksville?
When are sunrise and sunset in September in Clarksville?
How many hours of sunshine does Clarksville have in September?
What is the UV index intensity in September in Clarksville?
Average temperature in September
Clarksville, FL
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in September: 70.2°F
The month with the highest average low temperature is August (74.7°F).
The coldest month (with the lowest average low temperature) is January (42.4°F).
Average pressure in September
Clarksville, FL
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in September
Clarksville, FL
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is March (6.4mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in September
Clarksville, FL
- Average humidity in September: 78%
The months with the highest relative humidity are September and December (78%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Clarksville, FL
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is July (3.07").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in September
Clarksville, FL
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is July (21.6 days).
The month with the least rainy days is November (5 days).
Average snowfall days in September
Clarksville, FL
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January, February and March (0.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Clarksville, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Clarksville, FL
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is November (23.6 days).
The month with the least sunshine days is July (7.6 days).
Average UV index in September
Clarksville, FL
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Clarksville, FL
- Average cloud cover in September: 31
The month with the most cloud cover is December (Cloud cover 44).
The months with the least cloud cover are May and October (Cloud cover 28).
Average visibility in September
Clarksville, FL
- Average visibility in September: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are February and December (5mi).
Clarksville, Florida, USA
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