September weather forecast
Cumby, TX

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Weather in September

The first month of the autumn, September, is also a hot month in Cumby, Texas, with an average temperature ranging between max 86.7°F (30.4°C) and min 68°F (20°C).

Temperature

During the shift to September, a minor reduction in average high-temperature is observed, shifting from a tropical 94.1°F (34.5°C) in August to a still hot 86.7°F (30.4°C). In the month of September, the average temperature dips to a pleasant 68°F (20°C) during the night.

Heat index

The heat index value for September is appraised at a sweltering 96.8°F (36°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In Cumby, the average relative humidity in September is 68%.

Rainfall

In Cumby, in September, it is raining for 13.5 days, with typically 2.52" (64mm) of accumulated precipitation. Throughout the year, in Cumby, there are 143.9 rainfall days, and 32.24" (819mm) of precipitation is accumulated.

Snowfall

April through October and December are months without snowfall.

Daylight

In Cumby, the average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 6:58 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:08 pm CDT.

Sunshine

In September, the average sunshine is 8.8h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the maximum UV index of 6 transforms into these recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September?

The average high-temperature and low-temperature during September are 86.7°F (30.4°C) and 68°F (20°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, in September is appraised at 96.8°F (36°C).

What is the average humidity in September?

In Cumby, the average relative humidity in September is 68%.

How much does it rain in September?

In Cumby, in September, during 13.5 rainfall days, 2.52" (64mm) of precipitation is typically accumulated.

When it does not snow?

April through October and December are months without snowfall.

What is the average length of the day in September?

The average day length in September is 12h and 22min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:58 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:08 pm CDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.8h.

What is the UV index intensity in September in Cumby?

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe 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
Cumby, TX

Average temperature in September - Cumby, TX
  • Average high temperature in September: 86.7°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 (53.1°F).

  • Average low temperature in September: 68°F

The month with the highest average low temperature is July (73.8°F).
The coldest month (with the lowest average low temperature) is January (37°F).

Average pressure in September
Cumby, TX

Average pressure in September - Cumby, TX
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Cumby, TX

Average wind speed in September - Cumby, TX
  • Average wind speed in September: 6.4mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest month (with the lowest average wind speed) is September (6.4mph).

Average humidity in September
Cumby, TX

Average humidity in September - Cumby, TX
  • Average humidity in September: 68%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (63%).

Average rainfall in September
Cumby, TX

Average rainfall in September - Cumby, TX
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is October (3.86").
The driest month (with the least rainfall) is January (1.69").

Average rainfall days in September
Cumby, TX

Average rainfall days in September - Cumby, TX
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (8.5 days).

Average snowfall in September
Cumby, TX

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

The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").

Average snowfall days in September
Cumby, TX

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

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in September
Cumby, TX

Average sunshine days in September - Cumby, TX
  • Average sunshine days in September: 14.4 days

The month with the most sunshine days is January (20.8 days).
The months with the least sunshine days are April and May (14.2 days).

Average UV index in September
Cumby, TX

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

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in September
Cumby, TX

Average cloud cover in September - Cumby, TX
  • Average cloud cover in September: 28

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 21).

Average visibility in September
Cumby, TX

Average visibility in September - Cumby, 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).

Cumby, Texas, USA

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