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 August turns into September, the average high-temperatures rest at a still hot 87.4°F (30.8°C), showing a minor variation from the prior month. Clewiston throughout September, experiences an average nighttime temperature of 74.7°F (23.7°C).Heat index
The heat index for September is estimated at a blistering 105.8°F (41°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
September is the most humid month, with an average relative humidity of 81%.Rainfall
In Clewiston, in September, it is raining for 19.9 days, with typically 1.54" (39mm) of accumulated precipitation. In Clewiston, during the entire year, the rain falls for 166.9 days and collects up to 16.06" (408mm) of precipitation.Daylight
The average length of the day in September in Clewiston, Florida, is 12h and 18min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:10 pm EDT.
Sunshine
In Clewiston, the average sunshine in September is 8.8h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index in Clewiston. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 7 during September translates into the following directions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Frequently asked questions
Is it hot in Clewiston during September?
What is the most humid month in Clewiston?
What is the average humidity in September in Clewiston?
How much does it rain in Clewiston in September?
How many hours of daylight does Clewiston have in September?
When is the sunrise / sunset in September in Clewiston?
How many hours of sunshine does Clewiston have in September?
What is the month with the highest UV index in Clewiston?
What is the UV index intensity in September in Clewiston?
Average temperature in September
Clewiston, FL
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is August (89.6°F).
The month with the lowest average high temperature is January (72.3°F).
- Average low temperature in September: 74.7°F
The month with the highest average low temperature is August (76.5°F).
The coldest month (with the lowest average low temperature) is January (56.1°F).
Average pressure in September
Clewiston, FL
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).
Average wind speed in September
Clewiston, FL
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is March (7.1mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).
Average humidity in September
Clewiston, FL
- Average humidity in September: 81%
The month with the highest relative humidity is September (81%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
Clewiston, FL
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is August (3.19").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Clewiston, FL
- Average rainfall days in September: 19.9 days
The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is January (6.8 days).
Average daylight in September /
Average sunshine in September
Clewiston, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in September
Clewiston, FL
- Average sunshine days in September: 5.6 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is August (4.3 days).
Average UV index in September
Clewiston, FL
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February and December (UV index 5).
Average cloud cover in September
Clewiston, FL
- Average cloud cover in September: 33
The months with the most cloud cover are January, November and December (Cloud cover 34).
The months with the least cloud cover are March, April and May (Cloud cover 29).
Average visibility in September
Clewiston, 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).
Clewiston, Florida, USA
Weather forecast for your location
2. Allow the app to use your location
