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
With the onset of September, the average high-temperature registers at a still tropical 88°F (31.1°C), subtly different from August's 91°F (32.8°C). An average low-temperature of 70°F (21.1°C) marks the nights in Lee throughout September.Heat index
The average heat index in September is calculated to be an extremely hot 104°F (40°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. 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 'felt air temperature' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
In September, the average relative humidity is 77%.Rainfall
In Lee, during September, the rain falls for 19.2 days and regularly aggregates up to 3.35" (85mm) of precipitation. Throughout the year, there are 181.5 rainfall days, and 34.76" (883mm) of precipitation is accumulated.Snowfall
In Lee, Florida, snow does not fall in March through December.Daylight
In Lee, the average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 7:10 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:19 pm EDT.
Sunshine
The average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
How hot does it get in Lee in September?
What is the average humidity in September in Lee?
How many days does it rain in September in Lee?
When it does not snow in Lee?
What is the average length of the day in September in Lee?
When is the sunrise / sunset in September in Lee?
How many hours of sunshine does Lee have in September?
What is the UV index intensity in September in Lee?
Average temperature in September
Lee, FL
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (61.3°F).
- Average low temperature in September: 70°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 (43°F).
Average pressure in September
Lee, 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
Lee, FL
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are March and April (6.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Lee, FL
- Average humidity in September: 77%
The months with the highest relative humidity are August and December (78%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Lee, FL
- Average rainfall in September: 3.35"
The wettest month (with the highest rainfall) is August (5.2").
The driest month (with the least rainfall) is November (1.22").
Average rainfall days in September
Lee, FL
- Average rainfall days in September: 19.2 days
The month with the highest number of rainy days is August (26.3 days).
The month with the least rainy days is November (7.5 days).
Average snowfall days in September
Lee, FL
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Lee, 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 2min
The months with the most sunshine are May and July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Lee, FL
- Average sunshine days in September: 7.9 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is August (3.7 days).
Average UV index in September
Lee, FL
- Average UV index in September: 6
The months with the highest UV index are May, June and July (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Lee, FL
- Average cloud cover in September: 35
The month with the most cloud cover is December (Cloud cover 41).
The months with the least cloud cover are May and October (Cloud cover 30).
Average visibility in September
Lee, FL
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
Lee, Florida, USA
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