September weather forecast
Chapman Ranch, TX

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Weather in September

The first month of the autumn, September, is also a hot month in Chapman Ranch, Texas, with temperature in the range of an average high of 89.6°F (32°C) and an average low of 76.8°F (24.9°C).

Temperature

With the transition into September, Chapman Ranch notes an average high-temperature of a still hot 89.6°F (32°C), closely resembling August. During September, Chapman Ranch observes a consistent average nighttime temperature of 76.8°F (24.9°C).

Heat index

In September, the average heat index is calculated to be a scorching 104°F (40°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. 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 highly important for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to 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. 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. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The average relative humidity in September is 70%.

Rainfall

The month with the most rainfall in Chapman Ranch is September, when the rain falls for 15 days and typically aggregates up to 2.05" (52mm) of precipitation.

Snowfall

January, March through November are months without snowfall.

Daylight

In Chapman Ranch, the average length of the day in September is 12h and 19min.
On the first day of the month, sunrise is at 7:09 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:16 pm CDT.

Sunshine

The average sunshine in September is 8.5h.

UV index

The average daily maximum UV index in September in Chapman Ranch, Texas, is 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the UV index of 7 transforms into the following advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Frequently asked questions

How hot does it get in Chapman Ranch in September?

September temperatures in Chapman Ranch vary between a high-temperature of 89.6°F (32°C) and a low-temperature of 76.8°F (24.9°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is calculated to be 104°F (40°C).

What is the average humidity in September in Chapman Ranch?

In Chapman Ranch, Texas, the average relative humidity in September is 70%.

What is the rainiest month in Chapman Ranch?

The month with the most rainfall is September, when the rain falls for 15 days and typically aggregates up to 2.05" (52mm) of precipitation.

How many days does it rain in September in Chapman Ranch?

In September, in Chapman Ranch, the rain falls for 15 days. Throughout September, 2.05" (52mm) of precipitation is accumulated.

When it does not snow in Chapman Ranch?

In Chapman Ranch, snow does not fall in January, March through November.

How many hours of daylight does Chapman Ranch have in September?

The average day length in September in Chapman Ranch, Texas, is 12h and 19min.

What time are sunrise and sunset in September in Chapman Ranch?

In September, on the first day of the month, sunrise is at 7:09 am and sunset at 7:50 pm. On the last day of the month, in Chapman Ranch, Texas, sunrise is at 7:22 am and sunset at 7:16 pm CDT.

How long on average sun shines in September in Chapman Ranch?

In September, the average sunshine duration in Chapman Ranch is 8.5h.

What is the UV index intensity in September in Chapman Ranch?

The average daily maximum UV index in September in Chapman Ranch, Texas, is 7. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Chapman Ranch, TX

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

The warmest month (with the highest average high temperature) is August (94.1°F).
The month with the lowest average high temperature is January (64.6°F).

  • Average low temperature in September: 76.8°F

The month with the highest average low temperature is August (79.3°F).
The coldest month (with the lowest average low temperature) is January (50.9°F).

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Average pressure in September
Chapman Ranch, TX

Average pressure in September - Chapman Ranch, TX
  • Average pressure in September: 29.91"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in September
Chapman Ranch, TX

Average wind speed in September - Chapman Ranch, TX
  • Average wind speed in September: 8.6mph

The windiest month (with the highest average wind speed) is May (11.5mph).
The calmest month (with the lowest average wind speed) is September (8.6mph).

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Average humidity in September
Chapman Ranch, TX

Average humidity in September - Chapman Ranch, TX
  • Average humidity in September: 70%

The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (67%).

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Average rainfall in September
Chapman Ranch, TX

Average rainfall in September - Chapman Ranch, TX
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is September (2.05").
The driest month (with the least rainfall) is February (0.63").

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Average rainfall days in September
Chapman Ranch, TX

Average rainfall days in September - Chapman Ranch, TX
  • Average rainfall days in September: 15 days

The month with the highest number of rainy days is September (15 days).
The months with the least rainy days are July and August (7.3 days).

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Average snowfall days in September
Chapman Ranch, TX

Average snowfall days in September - Chapman Ranch, TX
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Chapman Ranch, TX

Average daylight in September / Average sunshine in September - Chapman Ranch, TX
  • 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 3min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

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Average sunshine days in September
Chapman Ranch, TX

Average sunshine days in September - Chapman Ranch, TX
  • Average sunshine days in September: 12.6 days

The month with the most sunshine days is July (22.5 days).
The month with the least sunshine days is September (12.6 days).

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Average UV index in September
Chapman Ranch, TX

Average UV index in September - Chapman Ranch, TX
  • Average UV index in September: 7

The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
Chapman Ranch, TX

Average cloud cover in September - Chapman Ranch, TX
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in September
Chapman Ranch, TX

Average visibility in September - Chapman Ranch, 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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Chapman Ranch, Texas, USA

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