September weather forecast
Van Horn, TX

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Weather in September

The first month of the autumn, September, is still a warm month in Van Horn, Texas, with an average temperature varying between 65.3°F (18.5°C) and 83.3°F (28.5°C).

Temperature

Van Horn observes a small decrease in the average high-temperature with the arrival of September, falling from August's hot 90.3°F (32.4°C) to a warm 83.3°F (28.5°C). Van Horn's average low-temperature during September nights is observed to be a comfortable 65.3°F (18.5°C).

Heat index

Throughout September, the heat index is estimated at 84.2°F (29°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', 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. 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 quite important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.

Humidity

September and December, with an average relative humidity of 49%, are the most humid months.

Rainfall

September is the month with the most rainfall. Rain falls for 12.8 days and accumulates 1.85" (47mm) of precipitation.

Snowfall

In Van Horn, snow does not fall in March through September.

Daylight

In Van Horn, the average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 7:35 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 7:45 pm CDT.

Sunshine

In September, the average sunshine in Van Horn, Texas, is 9.6h.

UV index

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 6 during September translates into these guidelines:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September in Van Horn?

During September, Van Horn experiences an average high-temperature of 83.3°F (28.5°C) and a low-temperature of 65.3°F (18.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in September is estimated at 84.2°F (29°C).

What are the most humid months in Van Horn?

September and December, with an average relative humidity of 49%, are most humid months.

What is the average humidity in September in Van Horn?

In September, the average relative humidity is 49%.

What is the wettest month in Van Horn?

September is the month with the most rainfall. Rain falls for 12.8 days and accumulates 1.85" (47mm) of precipitation.

How many days does it rain in September in Van Horn?

In Van Horn, Texas, in September, it is raining for 12.8 days, with typically 1.85" (47mm) of accumulated precipitation.

When it does not snow in Van Horn?

In Van Horn, snow does not fall in March through September.

Does it snow in Van Horn in September?

In Van Horn, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Van Horn?

The average day length in September in Van Horn is 12h and 20min.

What time are sunrise and sunset in September in Van Horn?

On the first day of September in Van Horn, Texas, sunrise is at 7:35 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 7:45 pm CDT.

How many hours of sunshine does Van Horn have in September?

The average sunshine duration in September is 9.6h.

How high is the UV index in September in Van Horn?

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to 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
Van Horn, TX

Average temperature in September - Van Horn, TX
  • Average high temperature in September: 83.3°F

The warmest month (with the highest average high temperature) is June (92.8°F).
The month with the lowest average high temperature is January (55.6°F).

  • Average low temperature in September: 65.3°F

The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).

Average pressure in September
Van Horn, TX

Average pressure in September - Van Horn, TX
  • Average pressure in September: 29.93"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).

Average wind speed in September
Van Horn, TX

Average wind speed in September - Van Horn, TX
  • Average wind speed in September: 7.1mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest months (with the lowest average wind speed) are August and September (7.1mph).

Average humidity in September
Van Horn, TX

Average humidity in September - Van Horn, TX
  • Average humidity in September: 49%

The months with the highest relative humidity are September and December (49%).
The month with the lowest relative humidity is April (25%).

Average rainfall in September
Van Horn, TX

Average rainfall in September - Van Horn, TX
  • Average rainfall in September: 1.85"

The wettest month (with the highest rainfall) is September (1.85").
The driest month (with the least rainfall) is February (0.2").

Average rainfall days in September
Van Horn, TX

Average rainfall days in September - Van Horn, TX
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is February (2.8 days).

Average snowfall in September
Van Horn, TX

Average snowfall in September - Van Horn, TX
  • Average snowfall in September: 0"

The month with the highest snowfall is November (0.75").
The months with the least snowfall are March, April, May, June, July, August and September (0").

Average snowfall days in September
Van Horn, TX

Average snowfall days in September - Van Horn, TX
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (1.4 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Van Horn, TX

Average daylight in September / Average sunshine in September - Van Horn, 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: 9h and 4min

The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 8h and 0min).

Average sunshine days in September
Van Horn, TX

Average sunshine days in September - Van Horn, TX
  • Average sunshine days in September: 13.2 days

The month with the most sunshine days is January (26.9 days).
The month with the least sunshine days is August (11.3 days).

Average UV index in September
Van Horn, TX

Average UV index in September - Van Horn, 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, November and December (UV index 3).

Average cloud cover in September
Van Horn, TX

Average cloud cover in September - Van Horn, TX
  • Average cloud cover in September: 19

The month with the most cloud cover is September (Cloud cover 19).
The months with the least cloud cover are May and June (Cloud cover 10).

Average visibility in September
Van Horn, TX

Average visibility in September - Van Horn, 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).

Van Horn, Texas, USA

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