September weather forecast
Chatfield, TX

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Weather in September

The first month of the autumn, September, is still a tropical month in Chatfield, Texas, with temperature in the range of an average low of 69.6°F (20.9°C) and an average high of 88.7°F (31.5°C).

Temperature

September sees a slight reduction in average high-temperature, with a shift from a fiery hot 95.5°F (35.3°C) in August to a tropical 88.7°F (31.5°C). In the month of September, an average of 69.6°F (20.9°C) marks the low-temperature in Chatfield.

Heat index

In September, the heat index is calculated to be a fiery hot 100.4°F (38°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. 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 Chatfield, Texas, the average relative humidity in September is 67%.

Rainfall

In Chatfield, in September, during 11.5 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, there are 113.6 rainfall days, and 16.38" (416mm) of precipitation is accumulated.

Snowfall

In Chatfield, snow does not fall in April through December.

Daylight

In September, the average length of the day in Chatfield is 12h and 21min.
On the first day of the month, sunrise is at 7:01 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:19 am and sunset at 7:11 pm CDT.

Sunshine

In September, the average sunshine in Chatfield is 8.5h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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:
Resist overexposure. Safeguarding from solar damage is indispensable. 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. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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Frequently asked questions

How hot does it get in Chatfield in September?

The average high-temperature and low-temperature during September are 88.7°F (31.5°C) and 69.6°F (20.9°C) respectively. In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is calculated to be 100.4°F (38°C).

What is the average humidity in September in Chatfield?

The average relative humidity in September is 67%.

How much does it rain in Chatfield in September?

In Chatfield, in September, it is raining for 11.5 days, with typically 1.14" (29mm) of accumulated precipitation.

When it does not snow in Chatfield?

April through December are months without snowfall in Chatfield, Texas.

How many hours of daylight does Chatfield have in September?

In September, the average day length is 12h and 21min.

What time are sunrise and sunset in September in Chatfield?

In September, on the first day of the month, sunrise is at 7:01 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:11 pm CDT.

How many hours of sunshine does Chatfield have in September?

The average sunshine duration in September in Chatfield, Texas, is 8.5h.

What is the UV index intensity in September in Chatfield?

In Chatfield, Texas, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high hazard to health 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
Chatfield, TX

Average temperature in September - Chatfield, TX
  • Average high temperature in September: 88.7°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 (55.8°F).

  • Average low temperature in September: 69.6°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).

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Average pressure in September
Chatfield, TX

Average pressure in September - Chatfield, TX
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
Chatfield, TX

Average wind speed in September - Chatfield, TX
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).

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Average humidity in September
Chatfield, TX

Average humidity in September - Chatfield, TX
  • Average humidity in September: 67%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (61%).

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Average rainfall in September
Chatfield, TX

Average rainfall in September - Chatfield, TX
  • Average rainfall in September: 1.14"

The wettest month (with the highest rainfall) is October (2.48").
The driest month (with the least rainfall) is January (0.79").

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Average rainfall days in September
Chatfield, TX

Average rainfall days in September - Chatfield, TX
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is May (12.9 days).
The month with the least rainy days is January (5.3 days).

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Average snowfall in September
Chatfield, TX

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

The month with the highest snowfall is February (0.16").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Chatfield, TX

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

The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in September
Chatfield, TX

Average sunshine days in September - Chatfield, TX
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is May (14.7 days).

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Average UV index in September
Chatfield, TX

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

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

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Average cloud cover in September
Chatfield, TX

Average cloud cover in September - Chatfield, TX
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 22).

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Average visibility in September
Chatfield, TX

Average visibility in September - Chatfield, 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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Chatfield, Texas, USA

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