Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September brings a slight decrease in the average high-temperature, shifting from a hot 93.6°F (34.2°C) in August to a still tropical 86.2°F (30.1°C). The average low-temperature during September nights is a pleasant 69.4°F (20.8°C).Heat index
The average heat index in September is evaluated at a tropical 89.6°F (32°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.Heat index determinations are made taking into account the shade and light air movements. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
The most humid month is September, with an average relative humidity of 54%.Rainfall
September is the month with the most rainfall. Rain falls for 11.2 days and accumulates 1.54" (39mm) of precipitation.Snowfall
In Sanderson, snow does not fall in March through October.Daylight
In Sanderson, the average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 7:26 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 7:35 pm CDT.
Sunshine
In Sanderson, the average sunshine in September is 9.1h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 6 during September morphs into the following directions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the most humid month?
What is the average humidity in September?
What is the rainiest month?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Sanderson have in September?
What is the UV index reading in September?
Average temperature in September
Sanderson, TX
- Average high temperature in September: 86.2°F
The warmest month (with the highest average high temperature) is June (93.7°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in September: 69.4°F
The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (40.5°F).
Average pressure in September
Sanderson, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are May and June (29.86"Hg).
Average wind speed in September
Sanderson, TX
- Average wind speed in September: 9.9mph
The windiest month (with the highest average wind speed) is June (12mph).
The calmest month (with the lowest average wind speed) is December (7.6mph).
Average humidity in September
Sanderson, TX
- Average humidity in September: 54%
The month with the highest relative humidity is September (54%).
The month with the lowest relative humidity is April (38%).
Average rainfall in September
Sanderson, TX
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is September (1.54").
The driest month (with the least rainfall) is February (0.24").
Average rainfall days in September
Sanderson, TX
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is September (11.2 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in September
Sanderson, TX
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.43").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
Sanderson, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.6 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
Sanderson, 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 1min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Sanderson, TX
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is January (26.1 days).
The month with the least sunshine days is September (16.2 days).
Average UV index in September
Sanderson, TX
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Sanderson, TX
- Average cloud cover in September: 23
The month with the most cloud cover is September (Cloud cover 23).
The months with the least cloud cover are June and August (Cloud cover 13).
Average visibility in September
Sanderson, 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).
Sanderson, Texas, USA
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