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
The arrival of September marks a slight shift to an average high-temperature of a still tropical 88.3°F (31.3°C) from August's 90.1°F (32.3°C). Throughout the nights in September, an average low-temperature of 74.3°F (23.5°C) is noted.Heat index
In September, the average heat index is computed to be a blistering 107.6°F (42°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.Heat index values are typically calculated for conditions of shade and a light breeze. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Overheating and potential dehydration arise when body heat gain eclipses its release capability.
Humidity
September is the most humid month, with an average relative humidity of 80%.Rainfall
In Joshua, during September, the rain falls for 23.5 days and regularly aggregates up to 3.31" (84mm) of precipitation. In Joshua, during the entire year, the rain falls for 187.3 days and collects up to 28.62" (727mm) of precipitation.Daylight
In September, the average length of the day is 12h and 19min.On the first day of the month, sunrise is at 7:06 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:19 am and sunset at 7:13 pm EDT.
Sunshine
In Joshua, the average sunshine in September is 8.9h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 7 transforms into these recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the most humid month?
What is the average humidity in September?
How much does it rain in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Joshua have in September?
What are the months with the highest UV index?
What is the UV index reading in September?
Average temperature in September
Joshua, FL
- Average high temperature in September: 88.3°F
The warmest months (with the highest average high temperature) are July and August (90.1°F).
The month with the lowest average high temperature is January (70.5°F).
- Average low temperature in September: 74.3°F
The month with the highest average low temperature is August (76.5°F).
The coldest month (with the lowest average low temperature) is January (52.9°F).
Average pressure in September
Joshua, FL
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).
Average wind speed in September
Joshua, FL
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).
Average humidity in September
Joshua, FL
- Average humidity in September: 80%
The month with the highest relative humidity is September (80%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
Joshua, FL
- Average rainfall in September: 3.31"
The wettest month (with the highest rainfall) is August (5.08").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in September
Joshua, FL
- Average rainfall days in September: 23.5 days
The months with the highest number of rainy days are July and August (25.7 days).
The month with the least rainy days is January (8.6 days).
Average daylight in September /
Average sunshine in September
Joshua, 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 months with the most sunshine are May and July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in September
Joshua, FL
- Average sunshine days in September: 4.7 days
The month with the most sunshine days is January (20.7 days).
The months with the least sunshine days are July and August (3.6 days).
Average UV index in September
Joshua, 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, February, November and December (UV index 5).
Average cloud cover in September
Joshua, FL
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 33).
The month with the least cloud cover is May (Cloud cover 26).
Average visibility in September
Joshua, 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).
Joshua, Florida, USA
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