September weather forecast and climate
Del Rio, FL

September, the first month of the autumn, in Del Rio, is still a hot month, with temperature in the range of an average low of 74.8°F (23.8°C) and an average high of 88.7°F (31.5°C).

Temperature

In September, the average high-temperature is almost the same as in August - a still tropical 88.7°F (31.5°C). In September, the average low-temperature is 74.8°F (23.8°C).

Heat index

In September, the average heat index is evaluated at a scorching 106°F (41.1°C). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like clothing, metabolic differences, wind, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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

Months with the highest humidity are September and December, with an average relative humidity of 76%.

Rainfall

In Del Rio, Florida, during 21 rainfall days, 3.23" (82mm) of precipitation is typically accumulated. Throughout the year, there are 172.9 rainfall days, and 27.24" (692mm) of precipitation is accumulated.

Daylight

In Del Rio, the average length of the day is 12.3h.

Sunshine

In September, the average sunshine in Del Rio is 8.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Del Rio. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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 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.

What is the temperature in September in Del Rio?

In Del Rio, in September, the average high-temperature is 88.7°F (31.5°C), and the average low-temperature is 74.8°F (23.8°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), that calculates temperature value influenced by the moisture in the air, in September is estimated at 106°F (41.1°C).

What are the most humid months in Del Rio?

Months with the highest humidity in Del Rio, Florida, are September and December, with an average relative humidity of 76%.

What is the average humidity in September in Del Rio?

The average relative humidity in September in Del Rio, Florida, is 76%.

How many days does it rain in September in Del Rio?

In Del Rio, in September, during 21 rainfall days, 3.23" (82mm) of precipitation is typically accumulated.

How many hours of daylight does Del Rio have in September?

The average length of the day in September in Del Rio, Florida, is 12.3h.

How long on average sun shines in September in Del Rio?

The average sunshine in September is 8.9h.

What are the months with the highest UV index in Del Rio?

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 Del Rio?

In September, the average daily maximum UV index in Del Rio, Florida, is 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to the UV radiation.
Average temperature in September - Del Rio, FL
  • Average high temperature in September: 88.7°F

The warmest month (with the highest average high temperature) is August (90.3°F).
The month with the lowest average high temperature is January (68.4°F).

  • Average low temperature in September: 74.8°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 (52.2°F).

Average pressure in September - Del Rio, FL
  • Average pressure in September: 29.96"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is September (29.96").

Average wind speed in September - Del Rio, FL
  • Average wind speed in September: 5.6mph

The windiest month (with the highest average wind speed) is March (7.1mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).

Average humidity in September - Del Rio, FL
  • Average humidity in September: 76%

Months with the highest relative humidity are September and December (76%).
Months with the lowest relative humidity are March and May (70%).

Average rainfall in September - Del Rio, FL
  • Average rainfall in September: 3.23"

The wettest month (with the highest rainfall) is July (5.08").
The driest month (with the least rainfall) is January (0.83").

Average rainfall days in September - Del Rio, FL
  • Average rainfall days in September: 21 days

Months with the highest number of rainy days are July and August (25 days).
The month with the least rainy days is January (6.8 days).

Average daylight in September / Average sunshine in September - Del Rio, 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: 8.9h

The month with the most sunshine is May (Average sunshine: 10.8h).
The month with the least sunshine is December (Average sunshine: 6.3h).

Average sunshine days in September - Del Rio, FL
  • Average sunshine days in September: 6.3 days

The month with the most sunshine days is January (22.1 days).
The month with the least sunshine days is August (3.4 days).

Average UV index in September - Del Rio, 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).

Average cloud cover in September - Del Rio, FL
  • Average cloud cover in September: 30

Months with the most cloud cover are January, February and December (Cloud cover 33).
The month with the least cloud cover is May (Cloud cover 25).

Average visibility in September - Del Rio, 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).