September weather forecast and climate
Cypress, FL

September, the first month of the autumn, in Cypress, is still a tropical month, with temperature in the range of an average low of 69.6°F (20.9°C) and an average high of 87.3°F (30.7°C).

Temperature

In September, the average high-temperature is relatively the same as in August - a still hot 87.3°F (30.7°C). In Cypress, the average low-temperature is 69.6°F (20.9°C).

Heat index

In September, the average heat index is calculated to a very hot 102°F (38.9°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the 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', 'feels like', 'felt air temperature', or 'real feel', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, wind, metabolic differences), and activity. 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. 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. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. 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

August, September and December, with an average relative humidity of 77%, are most humid months.

Rainfall

In Cypress, during 18.8 rainfall days, 3.15" (80mm) of precipitation is typically accumulated. In Cypress, during the entire year, the rain falls for 182.5 days and collects up to 36.97" (939mm) of precipitation.

Snowfall

In Cypress snow does not fall in February through December.

Daylight

In Cypress, the average length of the day in September is 12.3h.

Sunshine

In Cypress, Florida, the average sunshine is 8.6h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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 Cypress?

The average high-temperature, in September, in Cypress, is 87.3°F (30.7°C), while the average low-temperature is 69.6°F (20.9°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), that combines relative humidity and air temperature, is estimated at 102°F (38.9°C).

What is the most humid month in Cypress?

Months with the highest humidity in Cypress are August, September and December, with an average relative humidity of 77%.

What is the average humidity in September in Cypress?

In September, the average relative humidity in Cypress, Florida, is 77%.

How many days does it rain in September in Cypress?

In Cypress, Florida, in September, it is raining for 18.8 days, with typically 3.15" (80mm) of accumulated precipitation.

When it does not snow in Cypress?

In Cypress snow does not fall in February through December.

What is the average length of the day in September in Cypress?

In September, the average length of the day in Cypress is 12.3h.

How many hours of sunshine does Cypress have in September?

In Cypress, the average sunshine in September is 8.6h.

What is the UV index reading in September in Cypress?

The average daily maximum UV index in September in Cypress, Florida, is 6. A UV Index estimate of 6 to 7 represents a high health threat from the exposure to the Sun's UV rays.
Average temperature in September - Cypress, FL
  • Average high temperature in September: 87.3°F

The warmest months (with the highest average high temperature) are July and August (90.3°F).
The month with the lowest average high temperature is January (59.7°F).

  • Average low temperature in September: 69.6°F

The month with the highest average low temperature is August (74.3°F).
The coldest month (with the lowest average low temperature) is January (42.8°F).

Average pressure in September - Cypress, 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 - Cypress, FL
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is March (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in September - Cypress, FL
  • Average humidity in September: 77%

Months with the highest relative humidity are August, September and December (77%).
The month with the lowest relative humidity is May (71%).

Average rainfall in September - Cypress, FL
  • Average rainfall in September: 3.15"

The wettest month (with the highest rainfall) is August (5.28").
The driest month (with the least rainfall) is November (1.46").

Average rainfall days in September - Cypress, FL
  • Average rainfall days in September: 18.8 days

The month with the highest number of rainy days is August (26.3 days).
The month with the least rainy days is November (8.3 days).

Average snowfall in September - Cypress, 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 - Cypress, 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 March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in September / Average sunshine in September - Cypress, 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: 8.6h

Months with the most sunshine are June and July (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 5.5h).

Average sunshine days in September - Cypress, FL
  • Average sunshine days in September: 9.1 days

The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is July (3.4 days).

Average UV index in September - Cypress, 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 - Cypress, FL
  • Average cloud cover in September: 30

The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 27).

Average visibility in September - Cypress, 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).