September weather forecast and climate
Why, AZ

Weather in September

September, the first month of the autumn, in Why, is also a sweltering month, with average temperature ranging between min 79.5°F (26.4°C) and max 96.3°F (35.7°C).

Temperature

In Why, the average high-temperature is relatively the same as in August - a still sweltering 96.3°F (35.7°C). The average low-temperature, in September, is 79.5°F (26.4°C).

Humidity

The average relative humidity in Why is 31%.

Rainfall

In Why, during September, the rain falls for 8.2 days and regularly aggregates up to 0.83" (21mm) of precipitation. In Why, during the entire year, the rain falls for 58 days and collects up to 6.69" (170mm) of precipitation.

Daylight

In September, the average length of the day in Why is 12.3h.

Sunshine

In September, the average sunshine is 9.7h.

UV index

In Why, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect 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.
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FAQ

What is the temperature in September in Why?

In September, in Why, the average high-temperature is 96.3°F (35.7°C), and the average low-temperature is 79.5°F (26.4°C).

What is the average humidity in September in Why?

The average relative humidity in September in Why is 31%.

How much does it rain in Why in September?

In September, in Why, the rain falls for 8.2 days. Throughout September, 0.83" (21mm) of precipitation is accumulated.

How many hours of daylight does Why have in September?

In Why, Arizona, the average length of the day in September is 12.3h.

How many hours of sunshine does Why have in September?

In September, the average sunshine is 9.7h.

What is the UV index intensity in September in Why?

In September, the average daily maximum UV index in Why is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Why, AZ

Average temperature in September - Why, AZ
  • Average high temperature in September: 96.3°F

The warmest month (with the highest average high temperature) is July (102.4°F).
The month with the lowest average high temperature is December (63.1°F).

  • Average low temperature in September: 79.5°F

The month with the highest average low temperature is August (85.3°F).
The coldest month (with the lowest average low temperature) is December (47.7°F).

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Average pressure in September
Why, AZ

Average pressure in September - Why, AZ
  • Average pressure in September: 29.81"

The month with the highest atmospheric pressure is January (30.07").
The month with the lowest atmospheric pressure is June (29.76").

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Average wind speed in September
Why, AZ

Average wind speed in September - Why, AZ
  • Average wind speed in September: 6.6mph

The windiest months (with the highest average wind speed) are May and June (8.3mph).
The calmest months (with the lowest average wind speed) are January and December (5.3mph).

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Average humidity in September
Why, AZ

Average humidity in September - Why, AZ
  • Average humidity in September: 31%

The month with the highest relative humidity is December (42%).
The month with the lowest relative humidity is June (17%).

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Average rainfall in September
Why, AZ

Average rainfall in September - Why, AZ
  • Average rainfall in September: 0.83"

The wettest month (with the highest rainfall) is July (1.5").
The driest months (with the least rainfall) are April, May and June (0.08").

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Average rainfall days in September
Why, AZ

Average rainfall days in September - Why, AZ
  • Average rainfall days in September: 8.2 days

The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is May (1.3 days).

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

Average daylight in September / Average sunshine in September - Why, AZ
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 9.7h

The month with the most sunshine is June (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 7h).

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Average sunshine days in September
Why, AZ

Average sunshine days in September - Why, AZ
  • Average sunshine days in September: 19.2 days

The month with the most sunshine days is May (29.2 days).
The month with the least sunshine days is July (13.4 days).

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Average UV index in September
Why, AZ

Average UV index in September - Why, AZ
  • Average UV index in September: 7

Months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
Why, AZ

Average cloud cover in September - Why, AZ
  • Average cloud cover in September: 11

The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 5).

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Average visibility in September
Why, AZ

Average visibility in September - Why, AZ
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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