September weather forecast and climate
Alpine Heights, FL

September, the first month of the autumn, in Alpine Heights, is still a hot month, with temperature in the range of an average high of 87.4°F (30.8°C) and an average low of 71.2°F (21.8°C).

Temperature

In Alpine Heights, the average high-temperature in September is relatively the same as in August - a still tropical 87.4°F (30.8°C). In September, in Alpine Heights, the average low-temperature is 71.2°F (21.8°C).

Heat index

In September, the average heat index is estimated at a very hot 100.9°F (38.3°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. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', 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 (wind, pregnancy, differences in body mass, height, and shape). 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 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. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Alpine Heights, the average relative humidity is 74%.

Rainfall

In Alpine Heights, during 15.5 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, in Alpine Heights, there are 145 rainfall days, and 17.91" (455mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall in Alpine Heights.

Daylight

The average length of the day in Alpine Heights is 12.3h.

Sunshine

The average sunshine in September is 9.2h.

UV index

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in Alpine Heights?

In September, the average high-temperature is 87.4°F (30.8°C), and the average low-temperature is 71.2°F (21.8°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), that takes the relative humidity and factores it into the air temperature reading, is calculated to 100.9°F (38.3°C).

What is the average humidity in September in Alpine Heights?

The average relative humidity in September in Alpine Heights, Florida, is 74%.

How many days does it rain in September in Alpine Heights?

In Alpine Heights, in September, during 15.5 rainfall days, 1.22" (31mm) of precipitation is typically accumulated.

When it does not snow in Alpine Heights?

In Alpine Heights, Florida, snow does not fall in February through December.

What is the average length of the day in September in Alpine Heights?

In September, the average length of the day in Alpine Heights, Florida, is 12.3h.

How many hours of sunshine does Alpine Heights have in September?

In Alpine Heights, Florida, the average sunshine in September is 9.2h.

What is the UV index intensity in September in Alpine Heights?

In September, the average daily maximum UV index in Alpine Heights, Florida, is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to the UV radiation.
Average temperature in September - Alpine Heights, FL
  • Average high temperature in September: 87.4°F

The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (59.4°F).

  • Average low temperature in September: 71.2°F

The month with the highest average low temperature is August (75.6°F).
The coldest month (with the lowest average low temperature) is January (43.3°F).

Average pressure in September - Alpine Heights, FL
  • Average pressure in September: 29.98"

The month with the highest atmospheric pressure is January (30.16").
Months with the lowest atmospheric pressure are June, August and September (29.98").

Average wind speed in September - Alpine Heights, FL
  • Average wind speed in September: 5.1mph

The windiest months (with the highest average wind speed) are January, February and March (7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September - Alpine Heights, FL
  • Average humidity in September: 74%

The month with the highest relative humidity is December (77%).
Months with the lowest relative humidity are May and October (70%).

Average rainfall in September - Alpine Heights, FL
  • Average rainfall in September: 1.22"

The wettest month (with the highest rainfall) is August (2.95").
The driest months (with the least rainfall) are January and November (0.83").

Average rainfall days in September - Alpine Heights, FL
  • Average rainfall days in September: 15.5 days

The month with the highest number of rainy days is August (21.3 days).
The month with the least rainy days is November (6.8 days).

Average snowfall in September - Alpine Heights, FL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.04").
Months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September - Alpine Heights, FL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.2 days).
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 - Alpine Heights, FL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.1h).
The month with the shortest days is December (Average daylight: 10.2h).

  • Average sunshine in September: 9.2h

The month with the most sunshine is June (Average sunshine: 11.1h).
The month with the least sunshine is February (Average sunshine: 5.4h).

Average sunshine days in September - Alpine Heights, FL
  • Average sunshine days in September: 11.7 days

The month with the most sunshine days is November (21.8 days).
Months with the least sunshine days are July and August (6.3 days).

Average UV index in September - Alpine Heights, FL
  • Average UV index in September: 6

Months with the highest UV index are May, June, July and August (UV index 7).
Months with the lowest UV index are January and December (UV index 3).

Average cloud cover in September - Alpine Heights, FL
  • Average cloud cover in September: 26

Months with the most cloud cover are February and December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 24).

Average visibility in September - Alpine Heights, 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).