September weather forecast
Deer Park, FL

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Weather in September

September, the first month of the autumn in Deer Park, is also a hot month, with an average temperature varying between 74.8°F (23.8°C) and 88.7°F (31.5°C).

Temperature

Welcoming September, Deer Park notes an average high-temperature of a still tropical 88.7°F (31.5°C), nearly consistent with August's 90.5°F (32.5°C). An average low-temperature of 74.8°F (23.8°C) is noted during the month of September.

Heat index

In September, the average heat index is evaluated at a scorching 105.8°F (41°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

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

Rainfall

In Deer Park, in September, it is raining for 20 days, with typically 2.72" (69mm) of accumulated precipitation. In Deer Park, during the entire year, the rain falls for 162.9 days and collects up to 23.7" (602mm) of precipitation.

Daylight

The average length of the day in September is 12h and 19min.
On the first day of September, sunrise is at 7:08 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:16 pm EDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Guard oneself from overexposure. Defence against sun injury is vital. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Updated: Aug 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

During September, Deer Park experiences an average high-temperature of 88.7°F (31.5°C) and a low-temperature of 74.8°F (23.8°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 105.8°F (41°C).

What is the most humid month?

September and December, with an average relative humidity of 76%, are most humid months.

What is the average humidity in September?

In September, the average relative humidity is 76%.

How many days does it rain in September in Deer Park?

In Deer Park, in September, it is raining for 20 days, with typically 2.72" (69mm) of accumulated precipitation.

How many hours of daylight does Deer Park have in September?

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

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 7:08 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:16 pm EDT.

How many hours of sunshine does Deer Park have in September?

The average sunshine duration in September is 8.9h.

What are the months with the highest UV index?

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

How high is the UV index in September?

In Deer Park, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Deer Park, FL

Average temperature in September - Deer Park, FL
  • Average high temperature in September: 88.7°F

The warmest month (with the highest average high temperature) is August (90.5°F).
The month with the lowest average high temperature is January (67.6°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°F).

Average pressure in September
Deer Park, FL

Average pressure in September - Deer Park, FL
  • Average pressure in September: 29.96"Hg

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

Average wind speed in September
Deer Park, FL

Average wind speed in September - Deer Park, FL
  • Average wind speed in September: 5.6mph

The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is July (5.3mph).

Average humidity in September
Deer Park, FL

Average humidity in September - Deer Park, FL
  • Average humidity in September: 76%

The months with the highest relative humidity are September and December (76%).
The month with the lowest relative humidity is May (70%).

Average rainfall in September
Deer Park, FL

Average rainfall in September - Deer Park, FL
  • Average rainfall in September: 2.72"

The wettest month (with the highest rainfall) is July (4.45").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days in September
Deer Park, FL

Average rainfall days in September - Deer Park, FL
  • Average rainfall days in September: 20 days

The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is January (6.8 days).

Average daylight in September /
Average sunshine in September
Deer Park, FL

Average daylight in September / Average sunshine in September - Deer Park, 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 May (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

Average sunshine days in September
Deer Park, FL

Average sunshine days in September - Deer Park, FL
  • Average sunshine days in September: 7.1 days

The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is August (4.3 days).

Average UV index in September
Deer Park, FL

Average UV index in September - Deer Park, 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
Deer Park, FL

Average cloud cover in September - Deer Park, FL
  • Average cloud cover in September: 30

The months with the most cloud cover are February and December (Cloud cover 33).
The month with the least cloud cover is May (Cloud cover 24).

Average visibility in September
Deer Park, FL

Average visibility in September - Deer Park, 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).

Deer Park, Florida, USA

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