September weather forecast
Interlachen, FL

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Weather in September

The first month of the autumn, September, is still a hot month in Interlachen, Florida, with temperature in the range of an average low of 72.5°F (22.5°C) and an average high of 88.5°F (31.4°C).

Temperature

The arrival of September coincides with an average high-temperature of a still hot 88.5°F (31.4°C), indicating a minimal shift from August's 91°F (32.8°C). In September, in Interlachen, Florida, the average low-temperature is an agreeable 72.5°F (22.5°C).

Heat index

In September, the average heat index is evaluated at a blisteringly hot 105.8°F (41°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gauges the sensation of temperature factoring in the air's moisture content. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical for babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

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

Rainfall

In Interlachen, during September, the rain falls for 13.6 days and regularly aggregates up to 0.55" (14mm) of precipitation. Throughout the year, there are 118.9 rainfall days, and 8.23" (209mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall in Interlachen.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 7:05 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:13 pm EDT.

Sunshine

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

UV index

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Interlachen in September?

During September, Interlachen experiences an average high-temperature of 88.5°F (31.4°C) and a low-temperature of 72.5°F (22.5°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is evaluated at 105.8°F (41°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?

The average relative humidity in September is 78%.

How many days does it rain in September in Interlachen?

In Interlachen, Florida, in September, during 13.6 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

When it does not snow in Interlachen?

February through December are months without snowfall in Interlachen.

How many hours of daylight does Interlachen have in September?

In Interlachen, Florida, the average day length in September is 12h and 20min.

What time are sunrise and sunset in September in Interlachen?

On the first day of September in Interlachen, sunrise is at 7:05 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:13 pm EDT.

How long on average sun shines in September in Interlachen?

The average sunshine duration in September in Interlachen, Florida, is 8.4h.

What is the UV index intensity in September in Interlachen?

In September, the average daily maximum UV index in Interlachen, Florida, is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
Average max. wind speed
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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).

Average pressure in September
Interlachen, FL

Average pressure in September - Interlachen, 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).

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).

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%).

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").

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).

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).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in September /
Average sunshine in September
Interlachen, FL

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

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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).

Average UV index in September
Interlachen, FL

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

The 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).

Average cloud cover in September
Interlachen, FL

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

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

Average visibility in September
Interlachen, FL

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

The 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).

Interlachen, Florida, USA

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