September weather forecast and climate
Interlachen, FL

Weather in September

September, the first month of the autumn, in Interlachen, is also a hot month, with average temperature fluctuating between 72.5°F (22.5°C) and 88.5°F (31.4°C).

Temperature

In Interlachen, the average high-temperature in September is almost the same as in August - a still tropical 88.5°F (31.4°C). In September, in Interlachen, the average low-temperature is 72.5°F (22.5°C).

Heat index

In September, the average heat index is estimated at a blistering 106.7°F (41.5°C). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like metabolic differences, wind, clothing, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

September is the most humid month, with an average relative humidity of 78%.

Rainfall

In September, in Interlachen, the rain falls for 13.6 days. Throughout September, 0.55" (14mm) of precipitation is accumulated. In Interlachen, during the entire year, the rain falls for 118.9 days and collects up to 8.23" (209mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

The average length of the day in Interlachen is 12.3h.

Sunshine

In Interlachen, Florida, the average sunshine in September is 8.4h.

UV index

The average daily maximum UV index in Interlachen, Florida, is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in September interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Interlachen?

In September, the average high-temperature is 88.5°F (31.4°C), and the average low-temperature is 72.5°F (22.5°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that combines both air temperature and relative humidity, is evaluated at 106.7°F (41.5°C).

What is the most humid month in Interlachen?

September is the most humid month in Interlachen, Florida, with an average relative humidity of 78%.

What is the average humidity in September in Interlachen?

In Interlachen, Florida, the average relative humidity in September is 78%.

How much does it rain in Interlachen in September?

In Interlachen, Florida, in September, it is raining for 13.6 days, with typically 0.55" (14mm) of accumulated precipitation.

When it does not snow in Interlachen?

In Interlachen snow does not fall in February through December.

How many hours of daylight does Interlachen have in September?

In September, the average length of the day in Interlachen, Florida, is 12.3h.

How long on average sun shines in September in Interlachen?

In Interlachen, the average sunshine in September is 8.4h.

How high is the UV index in September in Interlachen?

The average daily maximum UV index in September in Interlachen, Florida, is 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation.

Average temperature in September
Interlachen, FL

Average temperature in September - Interlachen, FL
  • Average high temperature in September: 88.5°F

The warmest months (with the highest average high temperature) are July and August (91°F).
The month with the lowest average high temperature is January (65.5°F).

  • Average low temperature in September: 72.5°F

The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (47.3°F).

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Average pressure in September
Interlachen, FL

Average pressure in September - Interlachen, FL
  • Average pressure in September: 29.97"

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

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Average wind speed in September
Interlachen, FL

Average wind speed in September - Interlachen, FL
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is July (4.3mph).

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Average humidity in September
Interlachen, FL

Average humidity in September - Interlachen, FL
  • Average humidity in September: 78%

The month with the highest relative humidity is September (78%).
The month with the lowest relative humidity is March (71%).

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Average rainfall in September
Interlachen, FL

Average rainfall in September - Interlachen, FL
  • Average rainfall in September: 0.55"

The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is March (0.24").

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Average rainfall days in September
Interlachen, FL

Average rainfall days in September - Interlachen, FL
  • Average rainfall days in September: 13.6 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (5 days).

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Average snowfall days in September
Interlachen, FL

Average snowfall days in September - Interlachen, FL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.1 days).
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
Interlachen, FL

Average daylight in September / Average sunshine in September - Interlachen, FL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14h).
The month with the shortest days is December (Average daylight: 10.3h).

  • Average sunshine in September: 8.4h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days in September
Interlachen, FL

Average sunshine days in September - Interlachen, FL
  • Average sunshine days in September: 11.1 days

The month with the most sunshine days is December (23.4 days).
The month with the least sunshine days is August (8.3 days).

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Average UV index in September
Interlachen, FL

Average UV index in September - Interlachen, FL
  • Average UV index in September: 6

Months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 4).

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Average cloud cover in September
Interlachen, FL

Average cloud cover in September - Interlachen, FL
  • Average cloud cover in September: 35

Months with the most cloud cover are February and December (Cloud cover 40).
Months with the least cloud cover are May and October (Cloud cover 32).

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Average visibility in September
Interlachen, FL

Average visibility in September - Interlachen, FL
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is December (5mi).

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