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 onset of September results in a small decrease in the average high-temperature, moderately receding from a torrid 95.9°F (35.5°C) in August to a hot 87.6°F (30.9°C). Throughout the nights in September, Frisco experiences an average low-temperature of 70.2°F (21.2°C).Heat index
The average heat index in September is calculated to be a very hot 95°F (35°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
The average relative humidity in September in Frisco is 62%.Rainfall
In Frisco, Texas, in September, it is raining for 13.9 days, with typically 2.52" (64mm) of accumulated precipitation. In Frisco, during the entire year, the rain falls for 135 days and collects up to 29.65" (753mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Frisco, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:02 am and sunset at 7:51 pm. On the last day of September, in Frisco, sunrise is at 7:21 am and sunset at 7:12 pm CDT.
Sunshine
In Frisco, the average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index in Frisco is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In September, a daily UV index of 6 turns into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Frisco in September?
What is the average humidity in September in Frisco?
How many days does it rain in September in Frisco?
When it does not snow in Frisco?
What is the average length of the day in September in Frisco?
When is the sunrise / sunset in September in Frisco?
How long on average sun shines in September in Frisco?
What is the UV index reading in September in Frisco?
Average temperature in September
Frisco, TX
- Average high temperature in September: 87.6°F
The warmest month (with the highest average high temperature) is August (95.9°F).
The month with the lowest average high temperature is January (54°F).
- Average low temperature in September: 70.2°F
The months with the highest average low temperature are July and August (76.6°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in September
Frisco, TX
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Frisco, TX
- Average wind speed in September: 6.8mph
The windiest months (with the highest average wind speed) are March and April (10.1mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in September
Frisco, TX
- Average humidity in September: 62%
The month with the highest relative humidity is May (72%).
The month with the lowest relative humidity is August (55%).
Average rainfall in September
Frisco, TX
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is October (3.82").
The driest month (with the least rainfall) is February (1.57").
Average rainfall days in September
Frisco, TX
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in September
Frisco, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Frisco, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 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
Frisco, 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 3min
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 42min).
Average sunshine days in September
Frisco, TX
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is January (22.9 days).
The month with the least sunshine days is May (13.9 days).
Average UV index in September
Frisco, 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
Frisco, TX
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Frisco, 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).
Frisco, Texas, USA
Weather forecast for your location
2. Allow the app to use your location