September weather forecast
Trilby, FL

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Weather in September

The first month of the autumn, September, is still a hot month in Trilby, Florida, with an average temperature varying between 88.2°F (31.2°C) and 72.9°F (22.7°C).

Temperature

Trilby ushers in September with an average high-temperature of a still tropical 88.2°F (31.2°C), showing a close resemblance to the previous month. During the month of September, the temperature in Trilby generally drops to a low average of 72.9°F (22.7°C).

Heat index

For September, the heat index is estimated at a blisteringly hot 105.8°F (41°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. 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 July through September, with an average relative humidity of 79%.

Rainfall

In Trilby, in September, it is raining for 15.9 days, with typically 1.46" (37mm) of accumulated precipitation. In Trilby, during the entire year, the rain falls for 140.2 days and collects up to 15" (381mm) of precipitation.

Daylight

The average length of the day in September in Trilby, Florida, is 12h and 19min.
On the first day of the month, sunrise is at 7:07 am and sunset at 7:49 pm. On the last day of September, in Trilby, sunrise is at 7:21 am and sunset at 7:15 pm EDT.

Sunshine

The average sunshine in September in Trilby is 8.8h.

UV index

The months with the highest UV index in Trilby 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 unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot in Trilby during September?

During September, Trilby experiences an average high-temperature of 88.2°F (31.2°C) and a low-temperature of 72.9°F (22.7°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in September is estimated at 105.8°F (41°C).

What are the most humid months in Trilby?

July through September, with an average relative humidity of 79%, are most humid months in Trilby.

What is the average humidity in September in Trilby?

In September, the average relative humidity is 79%.

How much does it rain in Trilby in September?

In Trilby, Florida, in September, it is raining for 15.9 days, with typically 1.46" (37mm) of accumulated precipitation.

What is the average length of the day in September in Trilby?

In Trilby, Florida, the average day length in September is 12h and 19min.

What time are sunrise and sunset in September in Trilby?

On the first day of September in Trilby, sunrise is at 7:07 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:15 pm EDT.

How long on average sun shines in September in Trilby?

In September, the average sunshine duration in Trilby is 8.8h.

What is the month with the highest UV index in Trilby?

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

How high is the UV index in September in Trilby?

In Trilby, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Trilby, FL

Average temperature in September - Trilby, FL
  • Average high temperature in September: 88.2°F

The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is January (67.6°F).

  • Average low temperature in September: 72.9°F

The month with the highest average low temperature is August (75.6°F).
The coldest month (with the lowest average low temperature) is January (50°F).

Average pressure in September
Trilby, FL

Average pressure in September - Trilby, 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
Trilby, FL

Average wind speed in September - Trilby, FL
  • Average wind speed in September: 4.8mph

The windiest months (with the highest average wind speed) are March and April (6.3mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).

Average humidity in September
Trilby, FL

Average humidity in September - Trilby, FL
  • Average humidity in September: 79%

The months with the highest relative humidity are July, August and September (79%).
The month with the lowest relative humidity is March (72%).

Average rainfall in September
Trilby, FL

Average rainfall in September - Trilby, FL
  • Average rainfall in September: 1.46"

The wettest month (with the highest rainfall) is August (2.95").
The driest month (with the least rainfall) is January (0.31").

Average rainfall days in September
Trilby, FL

Average rainfall days in September - Trilby, FL
  • Average rainfall days in September: 15.9 days

The month with the highest number of rainy days is July (20.8 days).
The month with the least rainy days is January (5.8 days).

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

Average daylight in September / Average sunshine in September - Trilby, 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 July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).

Average sunshine days in September
Trilby, FL

Average sunshine days in September - Trilby, FL
  • Average sunshine days in September: 9.2 days

The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is August (6.2 days).

Average UV index in September
Trilby, FL

Average UV index in September - Trilby, 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
Trilby, FL

Average cloud cover in September - Trilby, FL
  • Average cloud cover in September: 33

The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is May (Cloud cover 28).

Average visibility in September
Trilby, FL

Average visibility in September - Trilby, 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).

Trilby, Florida, USA

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