September weather forecast
Bithlo, FL

Share

Weather in September

The first month of the autumn, September, is also a hot month in Bithlo, Florida, with an average temperature ranging between min 74.3°F (23.5°C) and max 88.3°F (31.3°C).

Temperature

The average high-temperature is a still hot 88.3°F (31.3°C) in September, hardly different from the 91°F (32.8°C) recorded in August. The mean low-temperature during September nights is a warm 74.3°F (23.5°C).

Heat index

In September, the heat index is estimated at an extremely hot 105.8°F (41°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

July through September, with an average relative humidity of 77%, are the most humid months.

Rainfall

In September, the rain falls for 14.5 days. Throughout September, 1.14" (29mm) of precipitation is accumulated. Throughout the year, there are 130.9 rainfall days, and 12.17" (309mm) of precipitation is accumulated.

Daylight

In Bithlo, Florida, the average length of the day in September is 12h and 19min.
On the first day of September, sunrise is at 7:02 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:11 pm EDT.

Sunshine

In Bithlo, the average sunshine in September is 8.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: An average UV index of 7 in September transforms into this advice:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Enhance your sun protection with tightly woven, yet airy clothing.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

In Bithlo, in September, the average high-temperature is 88.3°F (31.3°C), and the average low-temperature is 74.3°F (23.5°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in September is estimated at 105.8°F (41°C).

What are the most humid months?

The months with the highest humidity are July through September, with an average relative humidity of 77%.

What is the average humidity in September?

The average relative humidity in September is 77%.

How much does it rain in September?

In September, the rain falls for 14.5 days. Throughout September, 1.14" (29mm) of precipitation is accumulated.

What is the average length of the day in September?

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

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 7:02 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:11 pm EDT.

How long on average sun shines in September?

In Bithlo, the average sunshine duration in September is 8.9h.

When is the highest UV index?

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

What is the UV index intensity in September?

In Bithlo, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health threat from unsafe 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
Bithlo, FL

Average temperature in September - Bithlo, FL
  • Average high temperature in September: 88.3°F

The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is January (68.5°F).

  • Average low temperature in September: 74.3°F

The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (52.2°F).

Average pressure in September
Bithlo, FL

Average pressure in September - Bithlo, FL
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).

Average wind speed in September
Bithlo, FL

Average wind speed in September - Bithlo, FL
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).

Average humidity in September
Bithlo, FL

Average humidity in September - Bithlo, FL
  • Average humidity in September: 77%

The months with the highest relative humidity are July, August and September (77%).
The month with the lowest relative humidity is March (70%).

Average rainfall in September
Bithlo, FL

Average rainfall in September - Bithlo, FL
  • Average rainfall in September: 1.14"

The wettest month (with the highest rainfall) is August (2.09").
The driest month (with the least rainfall) is March (0.35").

Average rainfall days in September
Bithlo, FL

Average rainfall days in September - Bithlo, FL
  • Average rainfall days in September: 14.5 days

The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is January (5.9 days).

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

Average daylight in September / Average sunshine in September - Bithlo, 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 54min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).

Average sunshine days in September
Bithlo, FL

Average sunshine days in September - Bithlo, FL
  • Average sunshine days in September: 11.3 days

The month with the most sunshine days is January (22.5 days).
The months with the least sunshine days are July and August (7.8 days).

Average UV index in September
Bithlo, FL

Average UV index in September - Bithlo, 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
Bithlo, FL

Average cloud cover in September - Bithlo, FL
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is May (Cloud cover 27).

Average visibility in September
Bithlo, FL

Average visibility in September - Bithlo, 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).

Bithlo, Florida, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location