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
The onset of September brings with it an average high-temperature of a still hot 88.2°F (31.2°C), showing a negligible variation from the month before. Throughout the month of September, Lake Weir sees a steady low-temperature average of 72.7°F (22.6°C).Heat index
For most parts of September, the heat index is evaluated at a blisteringly hot 105.8°F (41°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.Be aware that heat index ratings are designed for shaded locations and minor breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
The months with the highest humidity are July through September, with an average relative humidity of 78%.Rainfall
In Lake Weir, during September, the rain falls for 18.5 days and regularly aggregates up to 1.93" (49mm) of precipitation. In Lake Weir, during the entire year, the rain falls for 159.3 days and collects up to 21.1" (536mm) of precipitation.Snowfall
In Lake Weir, Florida, snow does not fall in February through December.Daylight
In Lake Weir, the average length of the day in September is 12h and 19min.On the first day of the month, sunrise is at 7:05 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:14 pm EDT.
Sunshine
In September, the average sunshine in Lake Weir is 8.6h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 6 transforms into these recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
How hot is September in Lake Weir?
What are the most humid months in Lake Weir?
What is the average humidity in September in Lake Weir?
How many days does it rain in September in Lake Weir?
When it does not snow in Lake Weir?
How many hours of daylight does Lake Weir have in September?
When are sunrise and sunset in September in Lake Weir?
How many hours of sunshine does Lake Weir have in September?
How high is the UV index in September in Lake Weir?
Average temperature in September
Lake Weir, FL
- Average high temperature in September: 88.2°F
The warmest months (with the highest average high temperature) are July and August (90.1°F).
The month with the lowest average high temperature is January (66.6°F).
- Average low temperature in September: 72.7°F
The month with the highest average low temperature is August (75.6°F).
The coldest month (with the lowest average low temperature) is January (48.7°F).
Average pressure in September
Lake Weir, 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
Lake Weir, FL
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).
Average humidity in September
Lake Weir, FL
- Average humidity in September: 78%
The months with the highest relative humidity are July, August and September (78%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Lake Weir, FL
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is July (3.82").
The driest month (with the least rainfall) is March (0.71").
Average rainfall days in September
Lake Weir, FL
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is July (21.9 days).
The month with the least rainy days is November (7 days).
Average snowfall days in September
Lake Weir, FL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Lake Weir, 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 4min
The month with the most sunshine is May (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Lake Weir, FL
- Average sunshine days in September: 9.8 days
The month with the most sunshine days is January (21.7 days).
The month with the least sunshine days is July (6.3 days).
Average UV index in September
Lake Weir, 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 4).
Average cloud cover in September
Lake Weir, FL
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 38).
The month with the least cloud cover is May (Cloud cover 29).
Average visibility in September
Lake Weir, 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).
Lake Weir, Florida, USA
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