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 registers an average high-temperature of a still hot 86.4°F (30.2°C), slightly varied from August's 89.2°F (31.8°C). During the month of September, the temperature generally drops to a low average of 75.9°F (24.4°C).Heat index
September's heat index is computed to be a very hot 98.6°F (37°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. 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 76%.Rainfall
In Allandale, in September, it is raining for 19.7 days, with typically 4.21" (107mm) of accumulated precipitation. Throughout the year, there are 186.5 rainfall days, and 32.6" (828mm) of precipitation is accumulated.Daylight
In Allandale, the average length of the day in September is 12h and 19min.On the first day of the month, sunrise is at 7:02 am and sunset at 7:45 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:10 pm EDT.
Sunshine
In Allandale, the average sunshine in September is 8.8h.UV index
The months with the highest UV index in Allandale are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 7 in September translates into these instructions:
Shun overexposure. Protection from sun ravages is indispensable. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun 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
Is it hot during September?
What is the average humidity in September?
How many days does it rain in September?
How many hours of daylight does Allandale have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Allandale have in September?
What are the months with the highest UV index?
What is the UV index reading in September?
Average temperature in September
Allandale, FL
- Average high temperature in September: 86.4°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 (66.7°F).
- Average low temperature in September: 75.9°F
The month with the highest average low temperature is August (77.7°F).
The coldest month (with the lowest average low temperature) is January (54.1°F).
Average pressure in September
Allandale, FL
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).
Average wind speed in September
Allandale, FL
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in September
Allandale, FL
- Average humidity in September: 76%
The months with the highest relative humidity are July and August (77%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Allandale, FL
- Average rainfall in September: 4.21"
The wettest month (with the highest rainfall) is August (4.96").
The driest month (with the least rainfall) is March (1.34").
Average rainfall days in September
Allandale, FL
- Average rainfall days in September: 19.7 days
The month with the highest number of rainy days is August (23.1 days).
The month with the least rainy days is December (10.5 days).
Average daylight in September /
Average sunshine in September
Allandale, 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 5min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).
Average sunshine days in September
Allandale, FL
- Average sunshine days in September: 7.5 days
The month with the most sunshine days is March (17.5 days).
The month with the least sunshine days is August (5.6 days).
Average UV index in September
Allandale, 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
Allandale, FL
- Average cloud cover in September: 30
The months with the most cloud cover are January, February, November and December (Cloud cover 36).
The month with the least cloud cover is May (Cloud cover 27).
Average visibility in September
Allandale, 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).
Allandale, Florida, USA
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