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 transition from August to September brings an average high-temperature of a still hot 87.8°F (31°C), barely different from August's 90.9°F (32.7°C). Lake Butler experiences a mean temperature of 71.6°F (22°C) during September nights.Heat index
The average heat index in September is evaluated at an extremely hot 104°F (40°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.Heat index readings emphasize conditions of light breezes and shaded spots. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
The months with the highest humidity are August and September, with an average relative humidity of 78%.Rainfall
In September, the rain falls for 13.9 days. Throughout September, 0.59" (15mm) of precipitation is accumulated. Throughout the year, there are 125 rainfall days, and 10.24" (260mm) of precipitation is accumulated.Snowfall
January, March through December are months without snowfall in Lake Butler.Daylight
In September, the average length of the day is 12h and 20min.On the first day of September, sunrise is at 7:06 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:15 pm EDT.
Sunshine
In Lake Butler, Florida, the average sunshine in September is 8.4h.UV index
In Lake Butler, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Guard against overexposure. Protection from sun-induced harm is essential. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Lake Butler in September?
What is the most humid month in Lake Butler?
What is the average humidity in September in Lake Butler?
How much does it rain in Lake Butler in September?
When it does not snow in Lake Butler?
What is the average length of the day in September in Lake Butler?
What time are sunrise and sunset in September in Lake Butler?
How long on average sun shines in September in Lake Butler?
What is the UV index reading in September in Lake Butler?
Average temperature in September
Lake Butler, FL
- Average high temperature in September: 87.8°F
The warmest months (with the highest average high temperature) are July and August (90.9°F).
The month with the lowest average high temperature is January (63.3°F).
- Average low temperature in September: 71.6°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (45.5°F).
Average pressure in September
Lake Butler, FL
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in September
Lake Butler, FL
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).
Average humidity in September
Lake Butler, FL
- Average humidity in September: 78%
The months with the highest relative humidity are August and September (78%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
Lake Butler, FL
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is August (1.65").
The driest month (with the least rainfall) is March (0.39").
Average rainfall days in September
Lake Butler, FL
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is November (5 days).
Average snowfall days in September
Lake Butler, FL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Lake Butler, 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in September
Lake Butler, FL
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is November (23.8 days).
The months with the least sunshine days are June, July and August (9.9 days).
Average UV index in September
Lake Butler, 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 3).
Average cloud cover in September
Lake Butler, FL
- Average cloud cover in September: 35
The month with the most cloud cover is December (Cloud cover 41).
The month with the least cloud cover is May (Cloud cover 31).
Average visibility in September
Lake Butler, 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 Butler, Florida, USA
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