September weather forecastCross Bayou, FL
September
Weather in September
The first month of the autumn, September, is still a tropical month in Cross Bayou, Florida, with an average temperature varying between 77.9°F (25.5°C) and 86.9°F (30.5°C).Temperature
As Cross Bayou, Florida, welcomes September, the average high-temperature records at a still tropical 86.9°F (30.5°C), marking an insignificant deviation from the prior month. September sees a slight dip to an average low temperature of 77.9°F (25.5°C) from the daytime highs.Heat index
During September, the heat index is calculated to be a very hot 98.6°F (37°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.Heat index values are typically calculated for conditions of shade and a light breeze. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.
Humidity
The average relative humidity in September is 74%.Rainfall
In September, the rain falls for 19.9 days. Throughout September, 2.87" (73mm) of precipitation is accumulated. Throughout the year, there are 163.6 rainfall days, and 25.43" (646mm) of precipitation is accumulated.Daylight
In Cross Bayou, the average length of the day in September is 12h and 19min.On the first day of the month, sunrise is at 7:10 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:23 am and sunset at 7:17 pm EDT.
Sunshine
The average sunshine in September is 9.2h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.Note: In September, an average UV index of 7 transforms into the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cross Bayou, FL
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is January (66.7°F).
- Average low temperature in September: 77.9°F
The month with the highest average low temperature is August (80.4°F).
The coldest month (with the lowest average low temperature) is January (55.2°F).
Average pressure in September
Cross Bayou, FL
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed in September
Cross Bayou, FL
- Average wind speed in September: 7.5mph
The windiest months (with the highest average wind speed) are January and March (9.3mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in September
Cross Bayou, FL
- Average humidity in September: 74%
The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are March, May and October (72%).
Average rainfall in September
Cross Bayou, FL
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is July (4.65").
The driest month (with the least rainfall) is November (0.87").
Average rainfall days in September
Cross Bayou, FL
- Average rainfall days in September: 19.9 days
The month with the highest number of rainy days is July (24.7 days).
The month with the least rainy days is November (7.1 days).
Average daylight in September /
Average sunshine in September
Cross Bayou, FL
- Average daylight in September: 12h and 18min
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 24min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is May (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in September
Cross Bayou, FL
- Average sunshine days in September: 6.9 days
The month with the most sunshine days is January (22.1 days).
The month with the least sunshine days is July (4.3 days).
Average UV index in September
Cross Bayou, 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 month with the lowest UV index is January (UV index 4).
Average cloud cover in September
Cross Bayou, FL
- Average cloud cover in September: 26
The months with the most cloud cover are January and December (Cloud cover 29).
The month with the least cloud cover is May (Cloud cover 21).
Average visibility in September
Cross Bayou, 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).





