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 brings an average high-temperature of a still hot 88.2°F (31.2°C), nearly identical to the preceding month. In September, the nighttime temperature lowers to an average of 70.5°F (21.4°C).Heat index
The heat index for September is calculated to be an extremely hot 104°F (40°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.Understand that the heat index values take into account shaded locations and mild winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. 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. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.
Humidity
The average relative humidity in September is 76%.Rainfall
In Kennedy Still, during September, the rain falls for 16.7 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Kennedy Still, during the entire year, the rain falls for 160.1 days and collects up to 24.49" (622mm) of precipitation.Snowfall
March through December are months without snowfall.Daylight
In Kennedy Still, the average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 7:08 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:17 pm EDT.
Sunshine
The average sunshine in September is 8.4h.UV index
In Kennedy Still, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 6 in September translates into the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
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 much does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Kennedy Still, FL
- Average high temperature in September: 88.2°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (61.7°F).
- Average low temperature in September: 70.5°F
The month with the highest average low temperature is August (74.3°F).
The coldest month (with the lowest average low temperature) is January (43.2°F).
Average pressure in September
Kennedy Still, FL
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in September
Kennedy Still, FL
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in September
Kennedy Still, FL
- Average humidity in September: 76%
The months with the highest relative humidity are August and December (77%).
The months with the lowest relative humidity are April and May (70%).
Average rainfall in September
Kennedy Still, FL
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is June (3.9").
The driest month (with the least rainfall) is November (0.98").
Average rainfall days in September
Kennedy Still, FL
- Average rainfall days in September: 16.7 days
The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is November (6.6 days).
Average snowfall days in September
Kennedy Still, FL
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Kennedy Still, 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Kennedy Still, FL
- Average sunshine days in September: 11.6 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is August (5.5 days).
Average UV index in September
Kennedy Still, 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
Kennedy Still, FL
- Average cloud cover in September: 35
The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is October (Cloud cover 31).
Average visibility in September
Kennedy Still, FL
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October and November (6mi).
The months with the lowest visibility are September and December (5mi).
Kennedy Still, Florida, USA
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