September weather forecast and climate
Whiteriver, AZ

Weather in September

The first month of the autumn, September, is also a moderately hot month in Whiteriver, Arizona, with average temperature fluctuating between 54.5°F (12.5°C) and 76.6°F (24.8°C).

Temperature

In Whiteriver, the average high-temperature in September marginally drops, from a warm 82°F (27.8°C) in August, to a still moderately hot 76.6°F (24.8°C). In September, the average low-temperature is 54.5°F (12.5°C).

Humidity

In Whiteriver, Arizona, the average relative humidity in September is 47%.

Rainfall

In September, the rain falls for 8.8 days. Throughout September, 0.79" (20mm) of precipitation is accumulated. Throughout the year, in Whiteriver, Arizona, there are 71.1 rainfall days, and 9.96" (253mm) of precipitation is accumulated.

Snowfall

In Whiteriver snow does not fall in June through September.

Daylight

In September, the average length of the day in Whiteriver is 12.4h.

Sunshine

In Whiteriver, Arizona, the average sunshine is 10.3h.

UV index

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Whiteriver?

In September, the average high-temperature is 76.6°F (24.8°C), and the average low-temperature is 54.5°F (12.5°C).

What is the average humidity in September in Whiteriver?

The average relative humidity in September in Whiteriver is 47%.

How many days does it rain in September in Whiteriver?

In Whiteriver, during September, the rain falls for 8.8 days and regularly aggregates up to 0.79" (20mm) of precipitation.

Does it snow in Whiteriver in September?

In Whiteriver, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Whiteriver?

June through September are months without snowfall.

How many hours of daylight does Whiteriver have in September?

The average length of the day in September in Whiteriver is 12.4h.

How many hours of sunshine does Whiteriver have in September?

The average sunshine in September in Whiteriver is 10.3h.

How high is the UV index in September in Whiteriver?

In Whiteriver, Arizona, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in September
Whiteriver, AZ

Average temperature in September - Whiteriver, AZ
  • Average high temperature in September: 76.6°F

The warmest month (with the highest average high temperature) is June (83.3°F).
Months with the lowest average high temperature are January and December (45.7°F).

  • Average low temperature in September: 54.5°F

The month with the highest average low temperature is July (61°F).
The coldest months (with the lowest average low temperature) are January and December (27°F).

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Average pressure in September
Whiteriver, AZ

Average pressure in September - Whiteriver, AZ
  • Average pressure in September: 29.96"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in September
Whiteriver, AZ

Average wind speed in September - Whiteriver, AZ
  • Average wind speed in September: 6.8mph

The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in September
Whiteriver, AZ

Average humidity in September - Whiteriver, AZ
  • Average humidity in September: 47%

The month with the highest relative humidity is January (62%).
The month with the lowest relative humidity is June (26%).

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Average rainfall in September
Whiteriver, AZ

Average rainfall in September - Whiteriver, AZ
  • Average rainfall in September: 0.79"

The wettest month (with the highest rainfall) is July (1.89").
The driest month (with the least rainfall) is June (0.16").

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Average rainfall days in September
Whiteriver, AZ

Average rainfall days in September - Whiteriver, AZ
  • Average rainfall days in September: 8.8 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is June (2.8 days).

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Average snowfall in September
Whiteriver, AZ

Average snowfall in September - Whiteriver, AZ
  • Average snowfall in September: 0"

The month with the highest snowfall is January (5.94").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Whiteriver, AZ

Average snowfall days in September - Whiteriver, AZ
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (6.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Whiteriver, AZ
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 10.3h

Months with the most sunshine are June and August (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.8h).

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Average sunshine days in September
Whiteriver, AZ

Average sunshine days in September - Whiteriver, AZ
  • Average sunshine days in September: 16.6 days

The month with the most sunshine days is October (26 days).
The month with the least sunshine days is July (9.7 days).

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Average UV index in September
Whiteriver, AZ

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

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Whiteriver, AZ

Average cloud cover in September - Whiteriver, AZ
  • Average cloud cover in September: 13

The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 8).

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Average visibility in September
Whiteriver, AZ

Average visibility in September - Whiteriver, 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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