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 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
September registers an average high-temperature of a warm 84.7°F (29.3°C), slightly varied from August's 86.4°F (30.2°C). Juno Isles's nights throughout September are marked by an average low temperature of 79.3°F (26.3°C), a minor drop from the day's high.Heat index
Throughout September, the heat index is appraised at a sweltering 95°F (35°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.In reference to the heat index, it's for places in shade and with a slight wind. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.
Humidity
In Juno Isles, the average relative humidity in September is 76%.Rainfall
In Juno Isles, during September, the rain falls for 25.4 days and regularly aggregates up to 5.75" (146mm) of precipitation. Throughout the year, there are 230.9 rainfall days, and 46.73" (1187mm) of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 18min.On the first day of September in Juno Isles, sunrise is at 7:00 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:07 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 7 during September translates into the following directions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September in Juno Isles?
How many days does it rain in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What are the months with the highest UV index?
What is the UV index intensity in September?
Average temperature in September
Juno Isles, FL
- Average high temperature in September: 84.7°F
The warmest months (with the highest average high temperature) are July and August (86.4°F).
The month with the lowest average high temperature is January (71.6°F).
- Average low temperature in September: 79.3°F
The month with the highest average low temperature is August (81.1°F).
The coldest month (with the lowest average low temperature) is January (63.1°F).
Average pressure in September
Juno Isles, FL
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are September and October (29.96"Hg).
Average wind speed in September
Juno Isles, FL
- Average wind speed in September: 8.7mph
The windiest months (with the highest average wind speed) are January, March and November (11.4mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in September
Juno Isles, FL
- Average humidity in September: 76%
The month with the highest relative humidity is June (77%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
Juno Isles, FL
- Average rainfall in September: 5.75"
The wettest month (with the highest rainfall) is August (8.11").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days in September
Juno Isles, FL
- Average rainfall days in September: 25.4 days
The month with the highest number of rainy days is August (26.4 days).
The months with the least rainy days are January and February (13.3 days).
Average daylight in September /
Average sunshine in September
Juno Isles, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in September
Juno Isles, FL
- Average sunshine days in September: 3.5 days
The month with the most sunshine days is January (13.7 days).
The month with the least sunshine days is August (2.3 days).
Average UV index in September
Juno Isles, FL
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and February (UV index 5).
Average cloud cover in September
Juno Isles, FL
- Average cloud cover in September: 31
The month with the most cloud cover is November (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Juno Isles, 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).
Juno Isles, Florida, USA
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