September weather forecastLake Helen, FL
September
Weather in September
September, the first month of the autumn in Lake Helen, is also a hot month, with temperature in the range of an average low of 74.1°F (23.4°C) and an average high of 88.2°F (31.2°C).Temperature
Lake Helen experiences an average high-temperature of a still hot 88.2°F (31.2°C) in September, subtly different from August's 91.2°F (32.9°C). Throughout September, the average low-temperature dips to a moderately hot 74.1°F (23.4°C).Heat index
September's mean heat index is appraised at a scorching 104°F (40°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially vital to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Overheating and potential dehydration arise when body heat gain eclipses its release capability.
Humidity
The months with the highest humidity in Lake Helen are August and September, with an average relative humidity of 77%.Rainfall
In Lake Helen, during September, the rain falls for 23 days and regularly aggregates up to 4.33" (110mm) of precipitation. Throughout the year, in Lake Helen, Florida, there are 196.6 rainfall days, and 36.54" (928mm) of precipitation is accumulated.Snowfall
February through December are months without snowfall in Lake Helen.Daylight
In September, the average length of the day in Lake Helen is 12h and 19min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:46 pm. On the last day of September, in Lake Helen, sunrise is at 7:17 am and sunset at 7:11 pm EDT.
Sunshine
In Lake Helen, the average sunshine in September is 8.9h.UV index
In Lake Helen, Florida, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lake Helen, FL
- Average high temperature in September: 88.2°F
The warmest month (with the highest average high temperature) is August (91.2°F).
The month with the lowest average high temperature is January (67.5°F).
- Average low temperature in September: 74.1°F
The month with the highest average low temperature is August (76.3°F).
The coldest month (with the lowest average low temperature) is January (51.4°F).
Average pressure in September
Lake Helen, 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 Helen, FL
- Average wind speed in September: 5.2mph
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 Helen, FL
- Average humidity in September: 77%
The months with the highest relative humidity are August and September (77%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
Lake Helen, FL
- Average rainfall in September: 4.33"
The wettest month (with the highest rainfall) is August (5.94").
The driest month (with the least rainfall) is March (1.34").
Average rainfall days in September
Lake Helen, FL
- Average rainfall days in September: 23 days
The month with the highest number of rainy days is August (26.6 days).
The month with the least rainy days is January (10.2 days).
Average snowfall in September
Lake Helen, FL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.04").
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
Lake Helen, 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 Helen, FL
- Average daylight in September: 12h and 18min
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 54min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Lake Helen, FL
- Average sunshine days in September: 4.5 days
The month with the most sunshine days is January (18.5 days).
The month with the least sunshine days is August (2.3 days).
Average UV index in September
Lake Helen, 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 Helen, FL
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is May (Cloud cover 27).
Average visibility in September
Lake Helen, 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).
