September weather forecastGlenvar Heights, FL
September
Weather in September
September, the first month of the autumn in Glenvar Heights, is also a hot month, with an average temperature ranging between max 87.6°F (30.9°C) and min 79.7°F (26.5°C).Temperature
September's arrival brings an average high-temperature of a still tropical 87.6°F (30.9°C), demonstrating subtle variation from the preceding month. In Glenvar Heights, nights during September observe an average temperature decrease to a moderately hot 79.7°F (26.5°C).Heat index
During September, the heat index is computed to be a sweltering 100.4°F (38°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.When referencing the heat index, its values are suitable for shady environments and light breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
In September, the average relative humidity is 72%.Rainfall
In Glenvar Heights, in September, it is raining for 13.8 days, with typically 0.71" (18mm) of accumulated precipitation. In Glenvar Heights, during the entire year, the rain falls for 110.8 days and collects up to 8.19" (208mm) of precipitation.Snowfall
The only month with snowfall is September. The month with the most snowfall days is September, when snow falls for 0.1 days.Daylight
The average length of the day in September is 12h and 17min.On the first day of the month, sunrise is at 7:01 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:13 am and sunset at 7:08 pm EDT.
Sunshine
In Glenvar Heights, the average sunshine in September is 9.2h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 7 during September translates into the following directions:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Glenvar Heights, FL
- Average high temperature in September: 87.6°F
The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is January (73.9°F).
- Average low temperature in September: 79.7°F
The month with the highest average low temperature is August (81.7°F).
The coldest month (with the lowest average low temperature) is January (62.4°F).
Average pressure in September
Glenvar Heights, FL
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are September and October (29.95"Hg).
Average wind speed in September
Glenvar Heights, FL
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in September
Glenvar Heights, FL
- Average humidity in September: 72%
The month with the highest relative humidity is December (74%).
The month with the lowest relative humidity is March (67%).
Average rainfall in September
Glenvar Heights, FL
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in September
Glenvar Heights, FL
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is August (14.8 days).
The month with the least rainy days is December (4.7 days).
Average snowfall days in September
Glenvar Heights, FL
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Glenvar Heights, FL
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in September
Glenvar Heights, FL
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in September
Glenvar Heights, 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 5).
Average cloud cover in September
Glenvar Heights, FL
- Average cloud cover in September: 28
The month with the most cloud cover is October (Cloud cover 33).
The month with the least cloud cover is April (Cloud cover 25).
Average visibility in September
Glenvar Heights, 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).
