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
As Williston Highlands steps into September, the average high-temperature holds at a still hot 87.6°F (30.9°C), hinting at a minor fluctuation from the prior month. Throughout September, an average low-temperature of 72.3°F (22.4°C) is expected in Williston Highlands.Heat index
September's average heat index is computed to be an extremely hot 104°F (40°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.Know that the heat index computations account for shaded terrains and slight winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', comes about by integrating the temperature readings with the humidity levels. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
July through September, with an average relative humidity of 78%, are the most humid months in Williston Highlands.Rainfall
In Williston Highlands, in September, it is raining for 14.2 days, with typically 0.59" (15mm) of accumulated precipitation. In Williston Highlands, during the entire year, the rain falls for 127 days and collects up to 10.04" (255mm) of precipitation.Snowfall
In Williston Highlands, snow does not fall in February through December.Daylight
In September, the average length of the day is 12h and 20min.On the first day of the month, sunrise is at 7:08 am and sunset at 7:51 pm. On the last day of September, in Williston Highlands, sunrise is at 7:23 am and sunset at 7:16 pm EDT.
Sunshine
In Williston Highlands, Florida, the average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index in Williston Highlands is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 6 during September translates into the following directions:
Shun overexposure. Protection from sun ravages is indispensable. 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. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
How hot is September in Williston Highlands?
What are the most humid months in Williston Highlands?
What is the average humidity in September in Williston Highlands?
How many days does it rain in September in Williston Highlands?
When it does not snow in Williston Highlands?
How many hours of daylight does Williston Highlands have in September?
What time are sunrise and sunset in September in Williston Highlands?
How long on average sun shines in September in Williston Highlands?
How high is the UV index in September in Williston Highlands?
Average temperature in September
Williston Highlands, FL
- Average high temperature in September: 87.6°F
The warmest month (with the highest average high temperature) is August (90.1°F).
The month with the lowest average high temperature is January (64.9°F).
- Average low temperature in September: 72.3°F
The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (47.3°F).
Average pressure in September
Williston Highlands, FL
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).
Average wind speed in September
Williston Highlands, FL
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are March and April (7mph).
The calmest month (with the lowest average wind speed) is July (4.9mph).
Average humidity in September
Williston Highlands, 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
Williston Highlands, FL
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is July (1.73").
The driest month (with the least rainfall) is March (0.28").
Average rainfall days in September
Williston Highlands, FL
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is November (5.1 days).
Average snowfall days in September
Williston Highlands, 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
Williston Highlands, 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 months with the most sunshine are May and July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Williston Highlands, FL
- Average sunshine days in September: 11.8 days
The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in September
Williston Highlands, 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 4).
Average cloud cover in September
Williston Highlands, FL
- Average cloud cover in September: 33
The months with the most cloud cover are February and December (Cloud cover 37).
The month with the least cloud cover is May (Cloud cover 28).
Average visibility in September
Williston Highlands, 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).
Williston Highlands, Florida, USA
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