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 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
The transition into September shows a subtle variation to a still tropical 86.9°F (30.5°C) from August's 90.3°F (32.4°C) in the average high-temperature. The average temperature during September nights dips to an agreeable 69.6°F (20.9°C).Heat index
In September, the average heat index is computed to be a very hot 100.4°F (38°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
In Leonia, the average relative humidity in September is 75%.Rainfall
In Leonia, during September, the rain falls for 16.8 days and regularly aggregates up to 2.56" (65mm) of precipitation. In Leonia, Florida, during the entire year, the rain falls for 175.3 days and collects up to 36.02" (915mm) of precipitation.Snowfall
In Leonia, Florida, snow does not fall in February through December.Daylight
In Leonia, the average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:06 pm. On the last day of September, in Leonia, Florida, sunrise is at 6:37 am and sunset at 6:30 pm CDT.
Sunshine
The average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
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?
When it does not snow in Leonia?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Leonia, FL
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (59°F).
- Average low temperature in September: 69.6°F
The month with the highest average low temperature is August (73.9°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure in September
Leonia, FL
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in September
Leonia, FL
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is March (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Leonia, FL
- Average humidity in September: 75%
The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are May and October (70%).
Average rainfall in September
Leonia, FL
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is August (5.28").
The driest month (with the least rainfall) is November (1.93").
Average rainfall days in September
Leonia, FL
- Average rainfall days in September: 16.8 days
The month with the highest number of rainy days is August (24.3 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in September
Leonia, FL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Leonia, FL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Leonia, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in September
Leonia, FL
- Average sunshine days in September: 10.6 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is August (4.9 days).
Average UV index in September
Leonia, FL
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Leonia, FL
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in September
Leonia, 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).
Leonia, Florida, USA
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