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
September brings an average high-temperature of a still tropical 88°F (31.1°C), showing a slight difference from August's 90.7°F (32.6°C). An average low-temperature of 72.3°F (22.4°C) is observed during September nights.Heat index
The heat index for September is computed to be a scorching 105.8°F (41°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.When assessing, remember that heat index measurements are for light winds and shaded spots. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.
Humidity
August and September, with an average relative humidity of 78%, are the most humid months.Rainfall
In September, the rain falls for 13.3 days. Throughout September, 1.3" (33mm) of precipitation is accumulated. In South Idylwild, during the entire year, the rain falls for 150.7 days and collects up to 23.78" (604mm) of precipitation.Daylight
The average length of the day in September in South Idylwild is 12h and 20min.On the first day of September, sunrise is at 7:07 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:15 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In South Idylwild, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 6 in September translates into this advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the most humid month?
What is the average humidity in September?
How much does it rain in South Idylwild in September?
How many hours of daylight does South Idylwild have in September?
When are sunrise and sunset in September?
How many hours of sunshine does South Idylwild have in September?
How high is the UV index in September?
Average temperature in September
South Idylwild, FL
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is August (90.7°F).
The month with the lowest average high temperature is January (64.4°F).
- Average low temperature in September: 72.3°F
The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (46.2°F).
Average pressure in September
South Idylwild, FL
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).
Average wind speed in September
South Idylwild, FL
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).
Average humidity in September
South Idylwild, FL
- Average humidity in September: 78%
The months with the highest relative humidity are August and September (78%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
South Idylwild, FL
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is July (3.5").
The driest month (with the least rainfall) is November (1.26").
Average rainfall days in September
South Idylwild, FL
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is November (7.5 days).
Average daylight in September /
Average sunshine in September
South Idylwild, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 8h and 4min
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 0min).
Average sunshine days in September
South Idylwild, FL
- Average sunshine days in September: 15.9 days
The months with the most sunshine days are January and November (20.8 days).
The months with the least sunshine days are June and July (9.2 days).
Average UV index in September
South Idylwild, 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
South Idylwild, FL
- Average cloud cover in September: 33
The month with the most cloud cover is December (Cloud cover 38).
The months with the least cloud cover are May and October (Cloud cover 29).
Average visibility in September
South Idylwild, 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).
South Idylwild, Florida, USA
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