September weather forecast
Key Colony Beach, FL

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Weather in September

The first month of the autumn, September, is still a warm month in Key Colony Beach, Florida, with an average temperature varying between 84.6°F (29.2°C) and 82°F (27.8°C).

Temperature

Key Colony Beach's September reports an average high-temperature of a still moderately hot 84.6°F (29.2°C), exhibiting a minor difference from August. In Key Colony Beach, the nighttime temperature shows a slight difference from the daytime high, averaging to a still warm 82°F (27.8°C) during September.

Heat index

The heat index value during September is computed to be a hot 93.2°F (34°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.

Humidity

The average relative humidity in September is 74%.

Rainfall

The month with the most rainfall is September, when the rain falls for 23 days and typically aggregates up to 4.21" (107mm) of precipitation.

Daylight

In Key Colony Beach, the average length of the day in September is 12h and 17min.
On the first day of the month, sunrise is at 7:05 am and sunset at 7:42 pm. On the last day of September, in Key Colony Beach, sunrise is at 7:15 am and sunset at 7:11 pm EDT.

Sunshine

In September, the average sunshine in Key Colony Beach, Florida, is 9h.

UV index

The months with the highest UV index in Key Colony Beach are April through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: A maximum high daily UV index of 7 during September translates into the following directions:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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Frequently asked questions

How hot is September in Key Colony Beach?

In September, in Key Colony Beach, the average high-temperature is 84.6°F (29.2°C), and the average low-temperature is 82°F (27.8°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is computed to be 93.2°F (34°C).

What is the average humidity in September in Key Colony Beach?

The average relative humidity in September in Key Colony Beach, Florida, is 74%.

What is the rainiest month in Key Colony Beach?

The month with the most rainfall in Key Colony Beach is September, when the rain falls for 23 days and typically aggregates up to 4.21" (107mm) of precipitation.

How many days does it rain in September in Key Colony Beach?

In Key Colony Beach, in September, it is raining for 23 days, with typically 4.21" (107mm) of accumulated precipitation.

What is the average length of the day in September in Key Colony Beach?

The average day length in September is 12h and 17min.

When is the sunrise / sunset in September in Key Colony Beach?

In September, on the first day of the month, sunrise is at 7:05 am and sunset at 7:42 pm. On the last day of the month, in Key Colony Beach, sunrise is at 7:15 am and sunset at 7:11 pm EDT.

How long on average sun shines in September in Key Colony Beach?

In September, the average sunshine duration in Key Colony Beach is 9h.

What is the month with the highest UV index in Key Colony Beach?

The months with the highest UV index in Key Colony Beach are April through October, with an average maximum UV index of 7.

What is the UV index reading in September in Key Colony Beach?

In September, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Key Colony Beach, FL

Average temperature in September - Key Colony Beach, FL
  • Average high temperature in September: 84.6°F

The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is January (72.9°F).

  • Average low temperature in September: 82°F

The month with the highest average low temperature is August (82.9°F).
The coldest month (with the lowest average low temperature) is January (67.5°F).

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Average pressure in September
Key Colony Beach, FL

Average pressure in September - Key Colony Beach, FL
  • Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are September and October (29.94"Hg).

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Average wind speed in September
Key Colony Beach, FL

Average wind speed in September - Key Colony Beach, FL
  • Average wind speed in September: 9.8mph

The windiest month (with the highest average wind speed) is January (13.4mph).
The calmest month (with the lowest average wind speed) is July (9mph).

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Average humidity in September
Key Colony Beach, FL

Average humidity in September - Key Colony Beach, FL
  • Average humidity in September: 74%

The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is March (73%).

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Average rainfall in September
Key Colony Beach, FL

Average rainfall in September - Key Colony Beach, FL
  • Average rainfall in September: 4.21"

The wettest month (with the highest rainfall) is September (4.21").
The driest month (with the least rainfall) is March (0.43").

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Average rainfall days in September
Key Colony Beach, FL

Average rainfall days in September - Key Colony Beach, FL
  • Average rainfall days in September: 23 days

The month with the highest number of rainy days is September (23 days).
The month with the least rainy days is February (10.3 days).

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Average daylight in September /
Average sunshine in September
Key Colony Beach, FL

Average daylight in September / Average sunshine in September - Key Colony Beach, FL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 36min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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Average sunshine days in September
Key Colony Beach, FL

Average sunshine days in September - Key Colony Beach, FL
  • Average sunshine days in September: 4.6 days

The month with the most sunshine days is March (18 days).
The month with the least sunshine days is September (4.6 days).

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Average UV index in September
Key Colony Beach, FL

Average UV index in September - Key Colony Beach, FL
  • Average UV index in September: 7

The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The month with the lowest UV index is January (UV index 5).

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Average cloud cover in September
Key Colony Beach, FL

Average cloud cover in September - Key Colony Beach, FL
  • Average cloud cover in September: 28

The months with the most cloud cover are January and October (Cloud cover 32).
The month with the least cloud cover is April (Cloud cover 23).

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Average visibility in September
Key Colony Beach, FL

Average visibility in September - Key Colony Beach, 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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Key Colony Beach, Florida, USA

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