September weather forecast
Saybrook, FL

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Weather in September

The first month of the autumn, September, is also a hot month in Saybrook, Florida, with an average temperature varying between 86°F (30°C) and 75.9°F (24.4°C).

Temperature

The onset of September brings an average high-temperature of a still tropical 86°F (30°C), nearly matching the August temperature. The average low-temperature, in September, is a moderately hot 75.9°F (24.4°C).

Heat index

The heat index value for September is computed to be a fiery hot 98.6°F (37°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Note that heat index values are valued for light wind and location in the shade. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

The average relative humidity in September in Saybrook is 76%.

Rainfall

In Saybrook, in September, during 19.8 rainfall days, 4.09" (104mm) of precipitation is typically accumulated. In Saybrook, during the entire year, the rain falls for 186.8 days and collects up to 30.2" (767mm) of precipitation.

Snowfall

February through November are months without snowfall.

Daylight

In Saybrook, the average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 7:02 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:11 pm EDT.

Sunshine

In September, the average sunshine is 8.6h.

UV index

In Saybrook, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 6 during September translates into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

Saybrook in September has an average high-temperature of 86°F (30°C) and an average low-temperature of 75.9°F (24.4°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is computed to be 98.6°F (37°C).

What is the average humidity in September?

In Saybrook, the average relative humidity in September is 76%.

How much does it rain in September?

In Saybrook, in September, it is raining for 19.8 days, with typically 4.09" (104mm) of accumulated precipitation.

When it does not snow?

In Saybrook, snow does not fall in February through November.

What is the average length of the day in September?

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

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 7:02 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:11 pm EDT.

How long on average sun shines in September?

In Saybrook, the average sunshine duration in September is 8.6h.

How high is the UV index in September?

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.
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
Saybrook, FL

Average temperature in September - Saybrook, FL
  • Average high temperature in September: 86°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (64°F).

  • Average low temperature in September: 75.9°F

The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (51.4°F).

Average pressure in September
Saybrook, FL

Average pressure in September - Saybrook, FL
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.98"Hg).

Average wind speed in September
Saybrook, FL

Average wind speed in September - Saybrook, FL
  • Average wind speed in September: 7.3mph

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

Average humidity in September
Saybrook, FL

Average humidity in September - Saybrook, FL
  • Average humidity in September: 76%

The months with the highest relative humidity are July, August and December (77%).
The month with the lowest relative humidity is March (71%).

Average rainfall in September
Saybrook, FL

Average rainfall in September - Saybrook, FL
  • Average rainfall in September: 4.09"

The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is March (1.18").

Average rainfall days in September
Saybrook, FL

Average rainfall days in September - Saybrook, FL
  • Average rainfall days in September: 19.8 days

The month with the highest number of rainy days is August (24.8 days).
The month with the least rainy days is February (10.3 days).

Average snowfall days in September
Saybrook, FL

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

The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in September / Average sunshine in September - Saybrook, 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 4min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days in September
Saybrook, FL

Average sunshine days in September - Saybrook, FL
  • Average sunshine days in September: 6.8 days

The month with the most sunshine days is March (17.9 days).
The month with the least sunshine days is August (4.4 days).

Average UV index in September
Saybrook, FL

Average UV index in September - Saybrook, 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
Saybrook, FL

Average cloud cover in September - Saybrook, FL
  • Average cloud cover in September: 32

The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is May (Cloud cover 26).

Average visibility in September
Saybrook, FL

Average visibility in September - Saybrook, 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).

Saybrook, Florida, USA

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