September weather forecast
Winter Haven, FL

The perfect night sky full of bright red clouds reflected in a scenic mirror image in the lake water below, in Winter Haven, Fl, the United States
The perfect night sky full of bright red clouds reflected in a scenic mirror image in the lake water below, in Winter Haven, Fl, the United States

Weather in September

The first month of the autumn, September, is still a tropical month in Winter Haven, Florida, with temperature in the range of an average high of 88°F (31.1°C) and an average low of 73.6°F (23.1°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a still tropical 88°F (31.1°C). In Winter Haven, Florida, the average low-temperature is 73.6°F (23.1°C).

Heat index

The average heat index in September is calculated to be a scorching 105.6°F (40.9°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With 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 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like metabolic differences, differences in body mass, height, and shape, clothing, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

August and September, with an average relative humidity of 79%, are the most humid months.

Rainfall

In Winter Haven, during 21.5 rainfall days, 3.15" (80mm) of precipitation is typically accumulated. Throughout the year, there are 179.3 rainfall days, and 28.66" (728mm) of precipitation is accumulated.

Daylight

In September, the average length of the day in Winter Haven, Florida, is 12h and 19min.
On the first day of September in Winter Haven, sunrise is at 7:05 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:14 pm EDT.

Sunshine

In Winter Haven, the average sunshine in September is 8.7h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: The average daily UV index of 7 in September transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the 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.
[Resources]

FAQ

What is the temperature in September in Winter Haven?

The average high-temperature, in September, in Winter Haven, is 88°F (31.1°C), while the average low-temperature is 73.6°F (23.1°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is calculated to be 105.6°F (40.9°C).

What are the most humid months in Winter Haven?

The months with the highest humidity are August and September, with an average relative humidity of 79%.

What is the average humidity in September in Winter Haven?

In September, the average relative humidity in Winter Haven is 79%.

How much does it rain in Winter Haven in September?

In Winter Haven, in September, during 21.5 rainfall days, 3.15" (80mm) of precipitation is typically accumulated.

What is the average length of the day in September in Winter Haven?

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

When is the sunrise / sunset in September in Winter Haven?

On the first day of September in Winter Haven, Florida, sunrise is at 7:05 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:14 pm EDT.

How many hours of sunshine does Winter Haven have in September?

The average sunshine duration in September in Winter Haven, Florida, is 8.7h.

What is the month with the highest UV index in Winter Haven?

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

What is the UV index intensity in September in Winter Haven?

In Winter Haven, Florida, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Winter Haven, FL

Average temperature in September - Winter Haven, FL
  • Average high temperature in September: 88°F

The warmest months (with the highest average high temperature) are July and August (90°F).
The month with the lowest average high temperature is January (68.9°F).

  • Average low temperature in September: 73.6°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (51.4°F).

[Resources]

Average pressure in September
Winter Haven, FL

Average pressure in September - Winter Haven, FL
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).

[Resources]

Average wind speed in September
Winter Haven, FL

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

The windiest months (with the highest average wind speed) are January and March (6.8mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).

[Resources]

Average humidity in September
Winter Haven, FL

Average humidity in September - Winter Haven, FL
  • Average humidity in September: 79%

The months with the highest relative humidity are August and September (79%).
The month with the lowest relative humidity is March (71%).

[Resources]

Average rainfall in September
Winter Haven, FL

Average rainfall in September - Winter Haven, FL
  • Average rainfall in September: 3.15"

The wettest month (with the highest rainfall) is August (5.24").
The driest months (with the least rainfall) are January and March (0.91").

[Resources]

Average rainfall days in September
Winter Haven, FL

Average rainfall days in September - Winter Haven, FL
  • Average rainfall days in September: 21.5 days

The month with the highest number of rainy days is July (25.2 days).
The month with the least rainy days is January (8 days).

[Resources]

Average daylight in September /
Average sunshine in September
Winter Haven, FL

Average daylight in September / Average sunshine in September - Winter Haven, FL
  • Average daylight in September: 12h and 19min

The month with the longest days is June (Average daylight: 13h and 53min).
The month with the shortest days is December (Average daylight: 10h and 24min).

  • Average sunshine in September: 8h and 42min

The months with the most sunshine are May and July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).

[Resources]

Average sunshine days in September
Winter Haven, FL

Average sunshine days in September - Winter Haven, FL
  • Average sunshine days in September: 7 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (4.2 days).

[Resources]

Average UV index in September
Winter Haven, FL

Average UV index in September - Winter Haven, 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).

[Resources]

Average cloud cover in September
Winter Haven, FL

Average cloud cover in September - Winter Haven, FL
  • Average cloud cover in September: 33

The months with the most cloud cover are January and February (Cloud cover 36).
The month with the least cloud cover is May (Cloud cover 29).

[Resources]

Average visibility in September
Winter Haven, FL

Average visibility in September - Winter Haven, 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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location