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
During September, Dukes records an average high-temperature of a still hot 87.8°F (31°C), marking a slight divergence from August's 90.9°F (32.7°C). In the month of September, the temperature generally rests at an average low of 71.6°F (22°C).Heat index
For most parts of September, the heat index is calculated to be a blisteringly hot 104°F (40°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.Heat index details are generally centered around shaded locations and a mild breeze. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. 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 hold particular importance for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
The months with the highest humidity are August and September, with an average relative humidity of 78%.Rainfall
In Dukes, in September, during 13.9 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. Throughout the year, there are 125 rainfall days, and 10.24" (260mm) of precipitation is accumulated.Snowfall
In Dukes, snow does not fall in January, March through December.Daylight
The average length of the day in September 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 Dukes, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 6 in September translates into the following instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What are the most humid months?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Dukes have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Dukes, FL
- Average high temperature in September: 87.8°F
The warmest months (with the highest average high temperature) are July and August (90.9°F).
The month with the lowest average high temperature is January (63.3°F).
- Average low temperature in September: 71.6°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (45.5°F).
Average pressure in September
Dukes, 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
Dukes, FL
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).
Average humidity in September
Dukes, 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 (70%).
Average rainfall in September
Dukes, FL
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is August (1.65").
The driest month (with the least rainfall) is March (0.39").
Average rainfall days in September
Dukes, FL
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is November (5 days).
Average snowfall days in September
Dukes, FL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Dukes, 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 2min
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 48min).
Average sunshine days in September
Dukes, FL
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is November (23.8 days).
The months with the least sunshine days are June, July and August (9.9 days).
Average UV index in September
Dukes, 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
Dukes, FL
- Average cloud cover in September: 35
The month with the most cloud cover is December (Cloud cover 41).
The month with the least cloud cover is May (Cloud cover 31).
Average visibility in September
Dukes, 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).
Dukes, Florida, USA
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