September weather forecast
Marlin, TX

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Weather in September

September, the first month of the autumn in Marlin, is also a hot month, with an average temperature fluctuating between 70.7°F (21.5°C) and 88.7°F (31.5°C).

Temperature

September witnesses a gentle descent in average high-temperature, descending from August's very hot 96.4°F (35.8°C) to a hot 88.7°F (31.5°C). Marlin records a steady low-temperature average of 70.7°F (21.5°C) during September.

Heat index

September's heat index is computed to be a sweltering 100.4°F (38°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In Marlin, the average relative humidity in September is 66%.

Rainfall

In Marlin, Texas, during September, the rain falls for 12.3 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Marlin, during the entire year, the rain falls for 113.1 days and collects up to 14.17" (360mm) of precipitation.

Snowfall

In Marlin, snow does not fall in January, March through December.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of September in Marlin, Texas, sunrise is at 7:03 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:13 pm CDT.

Sunshine

The average sunshine in September is 8.6h.

UV index

In Marlin, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 during September translates into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. 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 Marlin in September?

The average high-temperature and low-temperature in Marlin during September are 88.7°F (31.5°C) and 70.7°F (21.5°C) respectively. In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is computed to be 100.4°F (38°C).

What is the average humidity in September in Marlin?

In Marlin, Texas, the average relative humidity in September is 66%.

How many days does it rain in September in Marlin?

In Marlin, Texas, in September, during 12.3 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.

When it does not snow in Marlin?

January, March through December are months without snowfall in Marlin.

How many hours of daylight does Marlin have in September?

In Marlin, Texas, the average day length in September is 12h and 20min.

What time are sunrise and sunset in September in Marlin?

In September, on the first day of the month, sunrise is at 7:03 am and sunset at 7:50 pm. On the last day of the month, in Marlin, Texas, sunrise is at 7:21 am and sunset at 7:13 pm CDT.

How long on average sun shines in September in Marlin?

In September, the average sunshine duration in Marlin, Texas, is 8.6h.

How high is the UV index in September in Marlin?

In September, the average daily maximum UV index in Marlin is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
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
Marlin, TX

Average temperature in September - Marlin, TX
  • Average high temperature in September: 88.7°F

The warmest month (with the highest average high temperature) is August (96.4°F).
The month with the lowest average high temperature is January (57°F).

  • Average low temperature in September: 70.7°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (40.8°F).

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Average pressure in September
Marlin, TX

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
Marlin, TX

Average wind speed in September - Marlin, TX
  • Average wind speed in September: 6.6mph

The windiest month (with the highest average wind speed) is March (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).

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Average humidity in September
Marlin, TX

Average humidity in September - Marlin, TX
  • Average humidity in September: 66%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (59%).

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Average rainfall in September
Marlin, TX

Average rainfall in September - Marlin, TX
  • Average rainfall in September: 1.1"

The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is February (0.71").

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Average rainfall days in September
Marlin, TX

Average rainfall days in September - Marlin, TX
  • Average rainfall days in September: 12.3 days

The month with the highest number of rainy days is May (12.9 days).
The month with the least rainy days is January (5.8 days).

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Average snowfall in September
Marlin, TX

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

The month with the highest snowfall is February (0.08").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Marlin, TX

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

The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in September / Average sunshine in September - Marlin, 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 12min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in September
Marlin, TX

Average sunshine days in September - Marlin, TX
  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is January (24 days).
The month with the least sunshine days is May (14.8 days).

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Average UV index in September
Marlin, TX

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

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

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Average cloud cover in September
Marlin, TX

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

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

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Average visibility in September
Marlin, TX

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

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