September weather forecast
Cypress, TX

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Weather in September

The first month of the autumn, September, is still a hot month in Cypress, Texas, with an average temperature fluctuating between 89.6°F (32°C) and 72.5°F (22.5°C).

Temperature

Transition into September subtly marks a drop in the average high-temperature, moderately moving from a torrid 95.5°F (35.3°C) in August to a tropical 89.6°F (32°C). During September, Cypress's temperature falls to a steady low-temperature average of 72.5°F (22.5°C).

Heat index

In September, the average heat index is calculated to be a blisteringly hot 107.6°F (42°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. 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. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In Cypress, the average relative humidity in September is 73%.

Rainfall

In September, the rain falls for 18.9 days. Throughout September, 2.91" (74mm) of precipitation is accumulated. Throughout the year, in Cypress, Texas, there are 159.4 rainfall days, and 23.11" (587mm) of precipitation is accumulated.

Snowfall

February through November are months without snowfall in Cypress.

Daylight

The average length of the day in September in Cypress is 12h and 20min.
On the first day of September, sunrise is at 7:00 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:09 pm CDT.

Sunshine

The average sunshine in September in Cypress, Texas, is 8.4h.

UV index

In Cypress, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the maximum UV index of 6 transforms into these recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
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Frequently asked questions

How hot does it get in Cypress in September?

During September, Cypress experiences an average high-temperature of 89.6°F (32°C) and a low-temperature of 72.5°F (22.5°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 107.6°F (42°C).

What is the average humidity in September in Cypress?

In Cypress, the average relative humidity in September is 73%.

How many days does it rain in September in Cypress?

In Cypress, during September, the rain falls for 18.9 days and regularly aggregates up to 2.91" (74mm) of precipitation.

When it does not snow in Cypress?

February through November are months without snowfall in Cypress, Texas.

How many hours of daylight does Cypress have in September?

The average day length in September in Cypress, Texas, is 12h and 20min.

When is the sunrise / sunset in September in Cypress?

In September, on the first day of the month, sunrise is at 7:00 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:09 pm CDT.

How long on average sun shines in September in Cypress?

The average sunshine duration in September is 8.4h.

What is the UV index intensity in September in Cypress?

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Cypress, TX

Average temperature in September - Cypress, TX
  • Average high temperature in September: 89.6°F

The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (61°F).

  • Average low temperature in September: 72.5°F

The month with the highest average low temperature is August (77.4°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).

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Average pressure in September
Cypress, TX

Average pressure in September - Cypress, TX
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in September
Cypress, TX

Average wind speed in September - Cypress, TX
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).

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Average humidity in September
Cypress, TX

Average humidity in September - Cypress, TX
  • Average humidity in September: 73%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (68%).

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Average rainfall in September
Cypress, TX

Average rainfall in September - Cypress, TX
  • Average rainfall in September: 2.91"

The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is February (1.02").

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Average rainfall days in September
Cypress, TX

Average rainfall days in September - Cypress, TX
  • Average rainfall days in September: 18.9 days

The month with the highest number of rainy days is September (18.9 days).
The month with the least rainy days is January (8.8 days).

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Average snowfall in September
Cypress, TX

Average snowfall in September - Cypress, TX
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Cypress, TX

Average snowfall days in September - Cypress, TX
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Cypress, TX

Average daylight in September / Average sunshine in September - Cypress, TX
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

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Average sunshine days in September
Cypress, TX

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

The month with the most sunshine days is January (19.4 days).
The month with the least sunshine days is September (9.1 days).

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Average UV index in September
Cypress, TX

Average UV index in September - Cypress, TX
  • Average UV index in September: 6

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
Cypress, TX

Average cloud cover in September - Cypress, TX
  • Average cloud cover in September: 33

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in September
Cypress, TX

Average visibility in September - Cypress, TX
  • 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).

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Cypress, Texas, USA

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