September weather forecast
Dumas, TX

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Weather in September

The first month of the autumn, September, is still a warm month in Dumas, Texas, with an average temperature fluctuating between 62.2°F (16.8°C) and 83.7°F (28.7°C).

Temperature

Dumas's September weather shows a modest shift in high-temperatures, falling from August's tropical 91.6°F (33.1°C) to a moderately hot 83.7°F (28.7°C). Throughout the September nights, Dumas encounters a low-temperature of 62.2°F (16.8°C).

Heat index

The heat index value for September is appraised at 84.2°F (29°C). Constant activity during exposure could result in a state of weariness and possibly heat cramps.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. 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 'felt air temperature' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.

Humidity

In Dumas, Texas, the average relative humidity in September is 51%.

Rainfall

In September, the rain falls for 8.6 days. Throughout September, 0.83" (21mm) of precipitation is accumulated. In Dumas, Texas, during the entire year, the rain falls for 85.5 days and collects up to 11.93" (303mm) of precipitation.

Snowfall

In Dumas, Texas, snow does not fall in May through September.

Daylight

In Dumas, the average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 7:20 am and sunset at 8:14 pm. On the last day of September, in Dumas, sunrise is at 7:42 am and sunset at 7:32 pm CDT.

Sunshine

The average sunshine in September is 9.4h.

UV index

In Dumas, Texas, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 6 in September translates into this advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot in Dumas during September?

Dumas in September has an average high-temperature of 83.7°F (28.7°C) and an average low-temperature of 62.2°F (16.8°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in September is appraised at 84.2°F (29°C).

What is the average humidity in September in Dumas?

The average relative humidity in September in Dumas is 51%.

How many days does it rain in September in Dumas?

In September, in Dumas, Texas, the rain falls for 8.6 days. Throughout September, 0.83" (21mm) of precipitation is accumulated.

When it does not snow in Dumas?

May through September are months without snowfall.

Does it snow in Dumas in September?

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

What is the average length of the day in September in Dumas?

The average day length in September is 12h and 23min.

When are sunrise and sunset in September in Dumas?

On the first day of September in Dumas, Texas, sunrise is at 7:20 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 7:32 pm CDT.

How long on average sun shines in September in Dumas?

In September, the average sunshine duration is 9.4h.

What is the UV index intensity in September in Dumas?

In Dumas, Texas, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health threat 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
Dumas, TX

Average temperature in September - Dumas, TX
  • Average high temperature in September: 83.7°F

The warmest month (with the highest average high temperature) is July (93°F).
The month with the lowest average high temperature is December (48.6°F).

  • Average low temperature in September: 62.2°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is December (29.3°F).

Average pressure in September
Dumas, TX

Average pressure in September - Dumas, TX
  • Average pressure in September: 29.95"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in September
Dumas, TX

Average wind speed in September - Dumas, TX
  • Average wind speed in September: 11.7mph

The windiest month (with the highest average wind speed) is April (13.8mph).
The calmest month (with the lowest average wind speed) is August (10.7mph).

Average humidity in September
Dumas, TX

Average humidity in September - Dumas, TX
  • Average humidity in September: 51%

The month with the highest relative humidity is December (56%).
The month with the lowest relative humidity is April (42%).

Average rainfall in September
Dumas, TX

Average rainfall in September - Dumas, TX
  • Average rainfall in September: 0.83"

The wettest month (with the highest rainfall) is July (1.77").
The driest month (with the least rainfall) is February (0.31").

Average rainfall days in September
Dumas, TX

Average rainfall days in September - Dumas, TX
  • Average rainfall days in September: 8.6 days

The month with the highest number of rainy days is August (13.4 days).
The months with the least rainy days are January and November (2.9 days).

Average snowfall in September
Dumas, TX

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

The month with the highest snowfall is January (1.54").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Dumas, TX

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

The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

Average sunshine days in September
Dumas, TX

Average sunshine days in September - Dumas, TX
  • Average sunshine days in September: 18.6 days

The months with the most sunshine days are January and December (25.3 days).
The months with the least sunshine days are July and August (13.8 days).

Average UV index in September
Dumas, TX

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

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in September
Dumas, TX

Average cloud cover in September - Dumas, TX
  • Average cloud cover in September: 18

The month with the most cloud cover is February (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 14).

Average visibility in September
Dumas, TX

Average visibility in September - Dumas, 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).

Dumas, Texas, USA

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