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
September's arrival subtly correlates with a reduction in the average high-temperature, down from a hot 87.6°F (30.9°C) in August to a warm 80.8°F (27.1°C). Gray Mountain, in September, observes a steady average low-temperature of 61.7°F (16.5°C).Humidity
In September, the average relative humidity is 32%.Rainfall
In Gray Mountain, Arizona, during September, the rain falls for 4.1 days and regularly aggregates up to 0.31" (8mm) of precipitation. In Gray Mountain, during the entire year, the rain falls for 57 days and collects up to 4.92" (125mm) of precipitation.Snowfall
In Gray Mountain, snow does not fall in May through September.Daylight
The average length of the day in September in Gray Mountain is 12h and 23min.On the first day of the month, sunrise is at 5:58 am and sunset at 6:52 pm. On the last day of September, sunrise is at 6:20 am and sunset at 6:10 pm MST.
Sunshine
The average sunshine in September in Gray Mountain, Arizona, is 10.1h.UV index
In Gray Mountain, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 6 suggests these recommendations:
Shield from overexposure. Defense against sun-related harm is required. 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. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
What is the temperature in September in Gray Mountain?
What is the average humidity in September in Gray Mountain?
How many days does it rain in September in Gray Mountain?
When it does not snow in Gray Mountain?
Does it snow in Gray Mountain in September?
How many hours of daylight does Gray Mountain have in September?
What time are sunrise and sunset in September in Gray Mountain?
How long on average sun shines in September in Gray Mountain?
How high is the UV index in September in Gray Mountain?
Average temperature in September
Gray Mountain, AZ
- Average high temperature in September: 80.8°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (43.7°F).
- Average low temperature in September: 61.7°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (28°F).
Average pressure in September
Gray Mountain, AZ
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Gray Mountain, AZ
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is January (5.4mph).
Average humidity in September
Gray Mountain, AZ
- Average humidity in September: 32%
The month with the highest relative humidity is January (61%).
The month with the lowest relative humidity is June (18%).
Average rainfall in September
Gray Mountain, AZ
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is January (0.59").
The driest month (with the least rainfall) is June (0.2").
Average rainfall days in September
Gray Mountain, AZ
- Average rainfall days in September: 4.1 days
The month with the highest number of rainy days is July (6.5 days).
The month with the least rainy days is June (2.6 days).
Average snowfall in September
Gray Mountain, AZ
- Average snowfall in September: 0"
The month with the highest snowfall is December (1.77").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Gray Mountain, AZ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (4.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Gray Mountain, 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 48min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Gray Mountain, AZ
- Average sunshine days in September: 23.8 days
The month with the most sunshine days is June (26.7 days).
The month with the least sunshine days is February (20.7 days).
Average UV index in September
Gray Mountain, AZ
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Gray Mountain, AZ
- Average cloud cover in September: 8
The month with the most cloud cover is December (Cloud cover 21).
The months with the least cloud cover are June and September (Cloud cover 8).
Average visibility in September
Gray Mountain, 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).
Gray Mountain, Arizona, USA
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