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 average high-temperature during September is a still tropical 88.7°F (31.5°C), almost matching the conditions of the preceding month. Throughout the month of September, Harney sees a steady low-temperature average of 74.8°F (23.8°C).Heat index
For September, the heat index is estimated at a blisteringly hot 105.8°F (41°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.The metrics for the heat index are tailored for both shady environments and light winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.
Humidity
The months with the highest humidity are September and December, with an average relative humidity of 76%.Rainfall
In Harney, in September, it is raining for 21 days, with typically 3.23" (82mm) of accumulated precipitation. In Harney, during the entire year, the rain falls for 172.9 days and collects up to 27.24" (692mm) of precipitation.Daylight
The average length of the day in September is 12h and 19min.On the first day of the month, sunrise is at 7:08 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:16 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 reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 7 in September translates into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it 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?
When are sunrise and sunset in September?
How many hours of sunshine does Harney have in September?
What is the month with the highest UV index?
What is the UV index reading in September?
Average temperature in September
Harney, FL
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is August (90.3°F).
The month with the lowest average high temperature is January (68.4°F).
- Average low temperature in September: 74.8°F
The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (52.2°F).
Average pressure in September
Harney, FL
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed in September
Harney, FL
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is March (7.1mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).
Average humidity in September
Harney, FL
- Average humidity in September: 76%
The months with the highest relative humidity are September and December (76%).
The months with the lowest relative humidity are March and May (70%).
Average rainfall in September
Harney, FL
- Average rainfall in September: 3.23"
The wettest month (with the highest rainfall) is July (5.08").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in September
Harney, FL
- Average rainfall days in September: 21 days
The months with the highest number of rainy days are July and August (25 days).
The month with the least rainy days is January (6.8 days).
Average daylight in September /
Average sunshine in September
Harney, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is May (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in September
Harney, FL
- Average sunshine days in September: 6.3 days
The month with the most sunshine days is January (22.1 days).
The month with the least sunshine days is August (3.4 days).
Average UV index in September
Harney, 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 month with the lowest UV index is January (UV index 4).
Average cloud cover in September
Harney, FL
- Average cloud cover in September: 30
The months with the most cloud cover are January, February and December (Cloud cover 33).
The month with the least cloud cover is May (Cloud cover 25).
Average visibility in September
Harney, 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).
Harney, Florida, USA
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