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 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 Sumterville transitions from August to September, the average high-temperatures adjust to a still hot 88.2°F (31.2°C), nearly the same as the previous 90.1°F (32.3°C). Sumterville's average low-temperature during September nights is observed to be an agreeable 72.7°F (22.6°C).Heat index
The heat index for September is evaluated at a blisteringly hot 105.8°F (41°C). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.One should consider that heat index numbers are for shaded settings and light wind. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.
Humidity
The months with the highest humidity are July through September, with an average relative humidity of 79%.Rainfall
In Sumterville, in September, it is raining for 13.6 days, with typically 0.71" (18mm) of accumulated precipitation. In Sumterville, during the entire year, the rain falls for 130.4 days and collects up to 11.26" (286mm) of precipitation.Daylight
The average length of the day in September is 12h and 19min.On the first day of the month, sunrise is at 7:06 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:14 pm EDT.
Sunshine
In September, the average sunshine is 8.8h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The UV index of 6 during September translates into the following guidance:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What are the most humid months?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
What time are sunrise and sunset in September in Sumterville?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Sumterville, FL
- Average high temperature in September: 88.2°F
The warmest months (with the highest average high temperature) are July and August (90.1°F).
The month with the lowest average high temperature is January (67.1°F).
- Average low temperature in September: 72.7°F
The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (48.9°F).
Average pressure in September
Sumterville, FL
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).
Average wind speed in September
Sumterville, FL
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).
Average humidity in September
Sumterville, FL
- Average humidity in September: 79%
The months with the highest relative humidity are July, August and September (79%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Sumterville, FL
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is July (2.2").
The driest month (with the least rainfall) is March (0.28").
Average rainfall days in September
Sumterville, FL
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (19.1 days).
The month with the least rainy days is November (6 days).
Average daylight in September /
Average sunshine in September
Sumterville, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Sumterville, FL
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is January (23.6 days).
The month with the least sunshine days is July (7.5 days).
Average UV index in September
Sumterville, 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 4).
Average cloud cover in September
Sumterville, FL
- Average cloud cover in September: 33
The months with the most cloud cover are February and December (Cloud cover 37).
The months with the least cloud cover are May and October (Cloud cover 29).
Average visibility in September
Sumterville, FL
- 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).
Sumterville, Florida, USA
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