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
September
Weather in September
Temperature
A moderate decline in average high-temperatures is noted in September, moving from a tropical 86.7°F (30.4°C) in August to a moderately hot 81.3°F (27.4°C). September nights are characterized by a notable drop from daytime highs, with an average low-temperature of 58.3°F (14.6°C).Heat index
The average heat index in September is calculated to be 80.6°F (27°C). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.Be aware that heat index ratings are designed for shaded locations and minor breezes. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to 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.
Humidity
In September, the average relative humidity is 40%.Rainfall
In September, the rain falls for 6.9 days. Throughout September, 0.59" (15mm) of precipitation is accumulated. Throughout the year, there are 75.4 rainfall days, and 9.72" (247mm) of precipitation is accumulated.Snowfall
January through April, September, November and December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 5.7 snowfall days, and 5.47" (139mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:01 am and sunset at 6:53 pm. On the last day of September, sunrise is at 6:22 am and sunset at 6:12 pm MST.
Sunshine
In September, the average sunshine is 9.7h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When does it start to snow?
How many hours of daylight does Cornville have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Cornville, AZ
- Average high temperature in September: 81.3°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is December (49.5°F).
- Average low temperature in September: 58.3°F
The months with the highest average low temperature are July and August (63.9°F).
The coldest month (with the lowest average low temperature) is December (30.9°F).
Average pressure in September
Cornville, AZ
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Cornville, AZ
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Cornville, AZ
- Average humidity in September: 40%
The months with the highest relative humidity are January and December (58%).
The month with the lowest relative humidity is June (23%).
Average rainfall in September
Cornville, AZ
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is December (1.26").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Cornville, AZ
- Average rainfall days in September: 6.9 days
The month with the highest number of rainy days is July (11.2 days).
The month with the least rainy days is June (1 days).
Average snowfall in September
Cornville, AZ
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in September
Cornville, AZ
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (1.9 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Cornville, AZ
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 4min
The months with the most sunshine are June and August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in September
Cornville, AZ
- Average sunshine days in September: 20.2 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is August (15.2 days).
Average UV index in September
Cornville, AZ
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are February and December (UV index 2).
Average cloud cover in September
Cornville, AZ
- Average cloud cover in September: 10
The month with the most cloud cover is December (Cloud cover 22).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility in September
Cornville, AZ
- 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).