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
On the advent of September, Whetstone's average high-temperature exhibits a minor adjustment to a warm 85.3°F (29.6°C) from August's 90°F (32.2°C). During September, Whetstone witnesses a consistent average low-temperature of 65.7°F (18.7°C).Heat index
For September, the heat index is evaluated at a tropical 86°F (30°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.Understand that the heat index values take into account shaded locations and mild winds. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. 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 of high significance for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Humidity
The average relative humidity in September is 44%.Rainfall
In September, in Whetstone, the rain falls for 10 days. Throughout September, 1.42" (36mm) of precipitation is accumulated. Throughout the year, there are 76.9 rainfall days, and 10.28" (261mm) of precipitation is accumulated.Snowfall
In Whetstone, snow does not fall in March through November.Daylight
In September, the average length of the day is 12h and 21min.On the first day of the month, sunrise is at 5:57 am and sunset at 6:44 pm. On the last day of September, sunrise is at 6:15 am and sunset at 6:07 pm MST.
Sunshine
In September, the average sunshine is 10h.UV index
In Whetstone, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 6 in September leads to these recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Whetstone have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Whetstone have in September?
How high is the UV index in September?
Average temperature in September
Whetstone, AZ
- Average high temperature in September: 85.3°F
The warmest month (with the highest average high temperature) is June (92.8°F).
The month with the lowest average high temperature is December (57.7°F).
- Average low temperature in September: 65.7°F
The month with the highest average low temperature is July (71.8°F).
The coldest months (with the lowest average low temperature) are January and December (38.5°F).
Average pressure in September
Whetstone, AZ
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Whetstone, AZ
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Whetstone, AZ
- Average humidity in September: 44%
The month with the highest relative humidity is December (48%).
The month with the lowest relative humidity is June (21%).
Average rainfall in September
Whetstone, AZ
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is August (2.48").
The driest months (with the least rainfall) are April and May (0.12").
Average rainfall days in September
Whetstone, AZ
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is May (2.1 days).
Average snowfall in September
Whetstone, AZ
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Whetstone, AZ
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.5 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Whetstone, AZ
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in September
Whetstone, AZ
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is May (28.4 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in September
Whetstone, AZ
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in September
Whetstone, AZ
- Average cloud cover in September: 15
The months with the most cloud cover are July and December (Cloud cover 20).
The month with the least cloud cover is May (Cloud cover 7).
Average visibility in September
Whetstone, 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).
Whetstone, Arizona, USA
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