September weather forecast
Mount Union, TX

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Weather in September

September, the first month of the autumn in Mount Union, is still a hot month, with an average temperature varying between 88.9°F (31.6°C) and 69.1°F (20.6°C).

Temperature

A subtle shift in Mount Union's weather is observed as August turns into September, with the average high temperature reducing from 94.5°F (34.7°C) to a still tropical 88.9°F (31.6°C). The low-temperature averages to a pleasant 69.1°F (20.6°C) during the nights of September.

Heat index

The heat index value for September is calculated to be a scorching 105.8°F (41°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. 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 'real feel' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. 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. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The average relative humidity in September is 76%.

Rainfall

In September, in Mount Union, the rain falls for 16.8 days. Throughout September, 3.07" (78mm) of precipitation is accumulated. In Mount Union, during the entire year, the rain falls for 175 days and collects up to 35.28" (896mm) of precipitation.

Snowfall

March through November are months without snowfall in Mount Union.

Daylight

The average length of the day in September in Mount Union is 12h and 20min.
On the first day of September in Mount Union, sunrise is at 6:52 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 7:02 pm CDT.

Sunshine

The average sunshine in September is 8.9h.

UV index

In Mount Union, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In September, a regular UV index of 6 translates into these guidelines:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
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Frequently asked questions

How hot is September in Mount Union?

September temperatures in Mount Union, Texas, vary between a high-temperature of 88.9°F (31.6°C) and a low-temperature of 69.1°F (20.6°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is calculated to be 105.8°F (41°C).

What is the average humidity in September in Mount Union?

In Mount Union, Texas, the average relative humidity in September is 76%.

How many days does it rain in September in Mount Union?

In Mount Union, in September, during 16.8 rainfall days, 3.07" (78mm) of precipitation is typically accumulated.

When it does not snow in Mount Union?

March through November are months without snowfall in Mount Union, Texas.

How many hours of daylight does Mount Union have in September?

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

When is the sunrise / sunset in September in Mount Union?

In September, on the first day of the month, sunrise is at 6:52 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 7:02 pm CDT.

How many hours of sunshine does Mount Union have in September?

The average sunshine duration in September in Mount Union, Texas, is 8.9h.

What is the UV index reading in September in Mount Union?

In Mount Union, Texas, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.
Average max. wind speed
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
Mount Union, TX

Average temperature in September - Mount Union, TX
  • Average high temperature in September: 88.9°F

The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is January (58.5°F).

  • Average low temperature in September: 69.1°F

The month with the highest average low temperature is July (73.9°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

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Average pressure in September
Mount Union, TX

Average pressure in September - Mount Union, 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
Mount Union, TX

Average wind speed in September - Mount Union, TX
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).

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Average humidity in September
Mount Union, TX

Average humidity in September - Mount Union, TX
  • Average humidity in September: 76%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in September
Mount Union, TX

Average rainfall in September - Mount Union, TX
  • Average rainfall in September: 3.07"

The wettest month (with the highest rainfall) is August (4.33").
The driest months (with the least rainfall) are February and November (2.13").

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Average rainfall days in September
Mount Union, TX

Average rainfall days in September - Mount Union, TX
  • Average rainfall days in September: 16.8 days

The month with the highest number of rainy days is August (19.8 days).
The month with the least rainy days is November (10.9 days).

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Average snowfall in September
Mount Union, TX

Average snowfall in September - Mount Union, TX
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.55").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Mount Union, TX

Average snowfall days in September - Mount Union, TX
  • Average snowfall days in September: 0 days

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

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Average daylight in September /
Average sunshine in September
Mount Union, TX

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

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

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

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Average sunshine days in September
Mount Union, TX

Average sunshine days in September - Mount Union, TX
  • Average sunshine days in September: 11.9 days

The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is August (9.4 days).

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Average UV index in September
Mount Union, TX

Average UV index in September - Mount Union, TX
  • Average UV index in September: 6

The months with the highest UV index are May, June and July (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
Mount Union, TX

Average cloud cover in September - Mount Union, TX
  • Average cloud cover in September: 36

The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is October (Cloud cover 33).

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Average visibility in September
Mount Union, TX

Average visibility in September - Mount Union, TX
  • Average visibility in September: 5mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).

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Mount Union, Texas, USA

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