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
In Cottonwood, the average high-temperature in September slightly decreases from a hot 87.6°F (30.9°C) in August to a warm 82°F (27.8°C). Cottonwood's average low-temperature of 59.7°F (15.4°C) in September reflects a significant disparity from the daytime highs.Heat index
In September, the heat index is computed to be 80.6°F (27°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.Realize that the values for the heat index are set for shaded places and light winds. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Humidity
In Cottonwood, Arizona, the average relative humidity in September is 40%.Rainfall
In Cottonwood, during September, the rain falls for 9.3 days and regularly aggregates up to 0.98" (25mm) of precipitation. Throughout the year, in Cottonwood, Arizona, 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. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 10.8 snowfall days, and 12.4" (315mm) 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 Cottonwood, Arizona, the average sunshine in September is 9.7h.UV index
In September, the average daily maximum UV index in Cottonwood is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Cottonwood?
What is the average humidity in September in Cottonwood?
How many days does it rain in September in Cottonwood?
When does it start snowing in Cottonwood?
How many hours of daylight does Cottonwood have in September?
What time are sunrise and sunset in September in Cottonwood?
How long on average sun shines in September in Cottonwood?
How high is the UV index in September in Cottonwood?
Average temperature in September
Cottonwood, 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
Cottonwood, 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
Cottonwood, 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
Cottonwood, 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
Cottonwood, 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
Cottonwood, 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
Cottonwood, 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
Cottonwood, 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
Cottonwood, 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 6min).
The months with the least sunshine are January and December (Average sunshine: 6h and 54min).
Average sunshine days in September
Cottonwood, 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
Cottonwood, 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
Cottonwood, 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
Cottonwood, 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).
Cottonwood, Arizona, USA
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