September weather forecast
Cornville, AZ

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Weather in September

The first month of the autumn, September, is still a warm month in Cornville, Arizona, with an average temperature varying between 81.3°F (27.4°C) and 58.3°F (14.6°C).

Temperature

September's arrival subtly correlates with a reduction in the average high-temperature, down from a hot 86.7°F (30.4°C) in August to a moderately hot 81.3°F (27.4°C). Despite a significant disparity with daytime temperatures, an average low-temperature of 58.3°F (14.6°C) is recorded during September.

Heat index

Throughout September, the heat index is estimated at 80.6°F (27°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. 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 of high significance for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.

Humidity

In September, the average relative humidity is 40%.

Rainfall

In Cornville, in September, it is raining for 6.9 days, with typically 0.59" (15mm) of accumulated precipitation. Throughout the year, there are 75.4 rainfall days, and 9.72" (247mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, September, November and December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Cornville, Arizona, during the entire year, snow falls for 5.7 days and aggregates up to 5.47" (139mm) of snow.

Daylight

The average length of the day in September in Cornville 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, in Cornville, sunrise is at 6:22 am and sunset at 6:12 pm MST.

Sunshine

The average sunshine in September in Cornville is 9.7h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 5 during September leads to these instructions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.

Frequently asked questions

What is the usual temperature for Cornville in September?

The high-temperature, in September, in Cornville, is 81.3°F (27.4°C), while the low-temperature averages to 58.3°F (14.6°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is estimated at 80.6°F (27°C).

What is the average humidity in September in Cornville?

In September, the average relative humidity in Cornville is 40%.

How much does it rain in Cornville in September?

In Cornville, Arizona, in September, it is raining for 6.9 days, with typically 0.59" (15mm) of accumulated precipitation.

When does it start snowing in Cornville?

September is the first month it typically snows in Cornville. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

What is the average length of the day in September in Cornville?

In Cornville, the average day length in September is 12h and 23min.

What time are sunrise and sunset in September in Cornville?

On the first day of September, sunrise is at 6:01 am and sunset at 6:53 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 6:12 pm MST.

How many hours of sunshine does Cornville have in September?

In Cornville, the average sunshine duration in September is 9.7h.

How high is the UV index in September in Cornville?

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health 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
Cornville, AZ

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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 / 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 - 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 - 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 - 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 - 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).

Cornville, Arizona, USA

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