September weather forecast
Crystal Heights, FL

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Weather in September

The first month of the autumn, September, is still a hot month in Crystal Heights, Florida, with temperature in the range of an average low of 74.3°F (23.5°C) and an average high of 88°F (31.1°C).

Temperature

Crystal Heights's transition from August to September introduces an average high-temperature of a still hot 88°F (31.1°C), marking an insignificant variation from the 91°F (32.8°C). During September, Crystal Heights records a consistent average nighttime temperature of 74.3°F (23.5°C).

Heat index

September's average heat index is computed to be a scorching 104°F (40°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The months with the highest humidity are August and September, with an average relative humidity of 77%.

Rainfall

In Crystal Heights, in September, it is raining for 20.8 days, with typically 3.46" (88mm) of accumulated precipitation. In Crystal Heights, during the entire year, the rain falls for 185.5 days and collects up to 30.43" (773mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

In Crystal Heights, the average length of the day in September is 12h and 19min.
On the first day of the month, sunrise is at 7:03 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:11 pm EDT.

Sunshine

The average sunshine in September in Crystal Heights, Florida, is 8.9h.

UV index

The months with the highest UV index in Crystal Heights, Florida, are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

How hot is September in Crystal Heights?

During September, Crystal Heights experiences an average high-temperature of 88°F (31.1°C) and a low-temperature of 74.3°F (23.5°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 104°F (40°C).

What are the most humid months in Crystal Heights?

The months with the highest humidity in Crystal Heights, Florida, are August and September, with an average relative humidity of 77%.

What is the average humidity in September in Crystal Heights?

In September, the average relative humidity in Crystal Heights is 77%.

How much does it rain in Crystal Heights in September?

In September, in Crystal Heights, the rain falls for 20.8 days. Throughout September, 3.46" (88mm) of precipitation is accumulated.

When it does not snow in Crystal Heights?

February through December are months without snowfall in Crystal Heights, Florida.

How many hours of daylight does Crystal Heights have in September?

The average day length in September in Crystal Heights is 12h and 19min.

When are sunrise and sunset in September in Crystal Heights?

In September, on the first day of the month, sunrise is at 7:03 am and sunset at 7:46 pm. On the last day of the month, in Crystal Heights, Florida, sunrise is at 7:18 am and sunset at 7:11 pm EDT.

How many hours of sunshine does Crystal Heights have in September?

In September, the average sunshine duration in Crystal Heights is 8.9h.

What is the month with the highest UV index in Crystal Heights?

The months with the highest UV index are May through September, with an average maximum UV index of 7.

What is the UV index reading in September in Crystal Heights?

The average daily maximum UV index in September in Crystal Heights, Florida, is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Crystal Heights, FL

Average temperature in September - Crystal Heights, FL
  • Average high temperature in September: 88°F

The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is January (67.8°F).

  • Average low temperature in September: 74.3°F

The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (52°F).

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Average pressure in September
Crystal Heights, FL

Average pressure in September - Crystal Heights, FL
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).

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Average wind speed in September
Crystal Heights, FL

Average wind speed in September - Crystal Heights, FL
  • Average wind speed in September: 5.2mph

The windiest months (with the highest average wind speed) are January, March and April (6.6mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).

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Average humidity in September
Crystal Heights, FL

Average humidity in September - Crystal Heights, FL
  • Average humidity in September: 77%

The months with the highest relative humidity are August and September (77%).
The month with the lowest relative humidity is March (70%).

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Average rainfall in September
Crystal Heights, FL

Average rainfall in September - Crystal Heights, FL
  • Average rainfall in September: 3.46"

The wettest month (with the highest rainfall) is August (4.72").
The driest month (with the least rainfall) is March (1.18").

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Average rainfall days in September
Crystal Heights, FL

Average rainfall days in September - Crystal Heights, FL
  • Average rainfall days in September: 20.8 days

The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is January (10.1 days).

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Average snowfall in September
Crystal Heights, FL

Average snowfall in September - Crystal Heights, FL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Crystal Heights, FL

Average snowfall days in September - Crystal Heights, 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).

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Average daylight in September /
Average sunshine in September
Crystal Heights, FL

Average daylight in September / Average sunshine in September - Crystal Heights, 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 18min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).

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Average sunshine days in September
Crystal Heights, FL

Average sunshine days in September - Crystal Heights, FL
  • Average sunshine days in September: 6.6 days

The month with the most sunshine days is January (17.4 days).
The month with the least sunshine days is August (4.3 days).

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Average UV index in September
Crystal Heights, FL

Average UV index in September - Crystal Heights, 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).

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Average cloud cover in September
Crystal Heights, FL

Average cloud cover in September - Crystal Heights, FL
  • Average cloud cover in September: 29

The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is May (Cloud cover 27).

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Average visibility in September
Crystal Heights, FL

Average visibility in September - Crystal Heights, 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).

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Crystal Heights, Florida, USA

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