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
The arrival of September signals a shift in temperature, down from a torrid 96.8°F (36°C) in August to a hot 87.4°F (30.8°C). Graham experiences an average low-temperature of 68.5°F (20.3°C) in month of September.Heat index
Throughout September, the heat index is evaluated at a very hot 95°F (35°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
In Graham, the average relative humidity in September is 61%.Rainfall
In September, in Graham, the rain falls for 11 days. Throughout September, 1.97" (50mm) of precipitation is accumulated. Throughout the year, in Graham, there are 108.8 rainfall days, and 18.5" (470mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Graham, Texas.Daylight
The average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 7:09 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:19 pm CDT.
Sunshine
In Graham, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 6 in September translates into the following instructions:
Deter overexposure. Protecting against the sun's effects is essential. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Graham in September?
What is the average humidity in September in Graham?
How much does it rain in Graham in September?
When it does not snow in Graham?
What is the average length of the day in September in Graham?
When is the sunrise / sunset in September in Graham?
How many hours of sunshine does Graham have in September?
How high is the UV index in September in Graham?
Average temperature in September
Graham, TX
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is August (96.8°F).
The months with the lowest average high temperature are January and December (55.6°F).
- Average low temperature in September: 68.5°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 (37.4°F).
Average pressure in September
Graham, 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 (29.88"Hg).
Average wind speed in September
Graham, TX
- Average wind speed in September: 7.9mph
The windiest month (with the highest average wind speed) is April (11.8mph).
The calmest month (with the lowest average wind speed) is September (7.9mph).
Average humidity in September
Graham, TX
- Average humidity in September: 61%
The month with the highest relative humidity is May (66%).
The month with the lowest relative humidity is August (50%).
Average rainfall in September
Graham, TX
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in September
Graham, TX
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (12.6 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in September
Graham, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Graham, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
Graham, 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 4min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Graham, TX
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is January (24.4 days).
The month with the least sunshine days is May (15.3 days).
Average UV index in September
Graham, 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
Graham, TX
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 32).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Graham, 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).
Graham, Texas, USA
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