September weather forecast and climate
Bartow, FL

Weather in September

September, the first month of the autumn, in Bartow, is still a hot month, with average temperature varying between 73.6°F (23.1°C) and 88°F (31.1°C).

Temperature

In Bartow, the average high-temperature is relatively the same as in August - a still hot 88°F (31.1°C). In September, the average low-temperature is 73.6°F (23.1°C).

Heat index

In September, the average heat index is calculated to be a blistering 106.2°F (41.2°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, wind, differences in body mass, height, and shape). 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 particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. 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

With an average relative humidity of 80%, September is the most humid month in Bartow.

Rainfall

In Bartow, during 20.2 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. In Bartow, Florida, during the entire year, the rain falls for 166.5 days and collects up to 19.09" (485mm) of precipitation.

Daylight

The average length of the day in Bartow, Florida, is 12.3h.

Sunshine

In Bartow, the average sunshine is 8.7h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Bartow. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Bartow?

In September, the average high-temperature is 88°F (31.1°C), and the average low-temperature is 73.6°F (23.1°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is calculated to be 106.2°F (41.2°C).

What is the most humid month in Bartow?

With an average relative humidity of 80%, September is the most humid month.

What is the average humidity in September in Bartow?

In Bartow, the average relative humidity in September is 80%.

How much does it rain in Bartow in September?

In Bartow, Florida, in September, during 20.2 rainfall days, 1.85" (47mm) of precipitation is typically accumulated.

How many hours of daylight does Bartow have in September?

The average length of the day in September in Bartow is 12.3h.

How long on average sun shines in September in Bartow?

In Bartow, the average sunshine in September is 8.7h.

What are the months with the highest UV index in Bartow?

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

What is the UV index reading in September in Bartow?

In September, the average daily maximum UV index in Bartow is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the UV radiation.

Average temperature in September
Bartow, FL

Average temperature in September - Bartow, 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 (69.3°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 (51.8°F).

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Average pressure in September
Bartow, FL

Average pressure in September - Bartow, FL
  • Average pressure in September: 29.96"

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

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Average wind speed in September
Bartow, FL

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

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

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Average humidity in September
Bartow, FL

Average humidity in September - Bartow, FL
  • Average humidity in September: 80%

The month with the highest relative humidity is September (80%).
The month with the lowest relative humidity is March (71%).

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Average rainfall in September
Bartow, FL

Average rainfall in September - Bartow, FL
  • Average rainfall in September: 1.85"

The wettest month (with the highest rainfall) is August (3.7").
The driest month (with the least rainfall) is March (0.47").

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Average rainfall days in September
Bartow, FL

Average rainfall days in September - Bartow, FL
  • Average rainfall days in September: 20.2 days

The month with the highest number of rainy days is July (24.3 days).
The month with the least rainy days is January (7.4 days).

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

Average daylight in September / Average sunshine in September - Bartow, FL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 13.9h).
The month with the shortest days is December (Average daylight: 10.4h).

  • Average sunshine in September: 8.7h

Months with the most sunshine are May and July (Average sunshine: 10.6h).
The month with the least sunshine is December (Average sunshine: 6.1h).

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Average sunshine days in September
Bartow, FL

Average sunshine days in September - Bartow, FL
  • Average sunshine days in September: 6.7 days

The month with the most sunshine days is January (21.9 days).
Months with the least sunshine days are July and August (4.8 days).

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Average UV index in September
Bartow, FL

Average UV index in September - Bartow, FL
  • Average UV index in September: 7

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).

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Average cloud cover in September
Bartow, FL

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

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

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Average visibility in September
Bartow, FL

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

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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