September weather forecast
Clarkdale, AZ

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Weather in September

The arrival of September brings with it the commencement of the fall season in Clarkdale, Arizona, USA. Interestingly, September continues to remain entirely snow-free. The weather during this period starts to cool down, with a decrease in the average maximum temperature and the lengthening of the shadows as daylight hours reduce. The air gets crisper as the humidity drops and the frequency of rainfall decreases. It is a month of changing colors, balmy days, and cool nights.

Temperature

With the commencement of September, Clarkdale records a moderate temperature decline, with the average high easing from August's hot 87.6°F (30.9°C) to a warm 82°F (27.8°C). The temperature notes a substantial fall from the daily peak to an average of 59.7°F (15.4°C) during September nights.

Heat index

The heat index in September is estimated at 80.6°F (27°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.

Humidity

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

Rainfall

In September, the rain falls for 9.3 days. Throughout September, 0.98" (25mm) of precipitation is accumulated. Throughout the year, there are 79 rainfall days, and 11.42" (290mm) of precipitation is accumulated.

Snowfall

January through April, September, November and December are months with snowfall. September is the first month it typically snows in Clarkdale. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. In Clarkdale, during the entire year, snow falls for 10.8 days and aggregates up to 12.4" (315mm) of snow.

Daylight

In Clarkdale, 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 6:54 pm. On the last day of September, sunrise is at 6:22 am and sunset at 6:13 pm MST.

Sunshine

In Clarkdale, the average sunshine in September is 9.7h.

UV index

In September, the average daily maximum UV index in Clarkdale is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.

Frequently asked questions

What is the usual temperature for Clarkdale in September?

In Clarkdale, in September, the average high-temperature is 82°F (27.8°C), and the average low-temperature is 59.7°F (15.4°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, in September is estimated at 80.6°F (27°C).

What is the average humidity in September in Clarkdale?

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

How many days does it rain in September in Clarkdale?

In Clarkdale, in September, during 9.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated.

When does it start to snow in Clarkdale?

September is the first month it typically snows in Clarkdale. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow.

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

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

When are sunrise and sunset in September in Clarkdale?

On the first day of September in Clarkdale, Arizona, sunrise is at 6:01 am and sunset at 6:54 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 6:13 pm MST.

How many hours of sunshine does Clarkdale have in September?

In September, the average sunshine duration is 9.7h.

What is the UV index intensity in September in Clarkdale?

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
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
Clarkdale, AZ

Average temperature in September - Clarkdale, AZ
  • Average high temperature in September: 82°F

The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is December (50.7°F).

  • Average low temperature in September: 59.7°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is December (31.8°F).

Average pressure in September
Clarkdale, AZ

Average pressure in September - Clarkdale, AZ
  • Average pressure in September: 29.91"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in September
Clarkdale, AZ

Average wind speed in September - Clarkdale, AZ
  • Average wind speed in September: 5.2mph

The windiest months (with the highest average wind speed) are April and May (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in September
Clarkdale, AZ

Average humidity in September - Clarkdale, AZ
  • Average humidity in September: 40%

The month with the highest relative humidity is December (57%).
The month with the lowest relative humidity is June (23%).

Average rainfall in September
Clarkdale, AZ

Average rainfall in September - Clarkdale, AZ
  • Average rainfall in September: 0.98"

The wettest month (with the highest rainfall) is July (1.65").
The driest month (with the least rainfall) is June (0.12").

Average rainfall days in September
Clarkdale, AZ

Average rainfall days in September - Clarkdale, AZ
  • Average rainfall days in September: 9.3 days

The month with the highest number of rainy days is July (14.2 days).
The month with the least rainy days is June (1.5 days).

Average snowfall in September
Clarkdale, AZ

Average snowfall in September - Clarkdale, AZ
  • Average snowfall in September: 0.08"

The month with the highest snowfall is December (4.02").
The months with the least snowfall are May, June, July, August and October (0").

Average snowfall days in September
Clarkdale, AZ

Average snowfall days in September - Clarkdale, AZ
  • Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is December (3.5 days).
The months with the least snowfall days are May, June, July, August and October (0 days).

Average daylight in September /
Average sunshine in September
Clarkdale, AZ

Average daylight in September / Average sunshine in September - Clarkdale, AZ
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
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 6min).
The months with the least sunshine are January and December (Average sunshine: 6h and 54min).

Average sunshine days in September
Clarkdale, AZ

Average sunshine days in September - Clarkdale, AZ
  • Average sunshine days in September: 17.5 days

The month with the most sunshine days is June (27.3 days).
The month with the least sunshine days is August (11.5 days).

Average UV index in September
Clarkdale, AZ

Average UV index in September - Clarkdale, AZ
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in September
Clarkdale, AZ

Average cloud cover in September - Clarkdale, 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
Clarkdale, AZ

Average visibility in September - Clarkdale, 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).

Clarkdale, Arizona, USA

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