September weather forecast and climate
Blackwater, AZ

Weather in September

The first month of the autumn, September, is still a very hot month in Blackwater, Arizona, with average temperature ranging between min 77°F (25°C) and max 95.7°F (35.4°C).

Temperature

In September, the average high-temperature marginally drops, from a torrid 101.1°F (38.4°C) in August, to a still sweltering 95.7°F (35.4°C). In September, the average low-temperature is 77°F (25°C).

Humidity

In Blackwater, the average relative humidity in September is 33%.

Rainfall

In Blackwater, Arizona, during September, the rain falls for 6.7 days and regularly aggregates up to 0.75" (19mm) of precipitation. In Blackwater, during the entire year, the rain falls for 50.9 days and collects up to 6.89" (175mm) of precipitation.

Daylight

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

Sunshine

In September, the average sunshine in Blackwater is 9.6h.

UV index

In September, the average daily maximum UV index in Blackwater is 7. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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 Blackwater?

In Blackwater, Arizona, in September, the average high-temperature is 95.7°F (35.4°C), and the average low-temperature is 77°F (25°C).

What is the average humidity in September in Blackwater?

In Blackwater, the average relative humidity in September is 33%.

How many days does it rain in September in Blackwater?

In Blackwater, Arizona, during September, the rain falls for 6.7 days and regularly aggregates up to 0.75" (19mm) of precipitation.

What is the average length of the day in September in Blackwater?

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

How many hours of sunshine does Blackwater have in September?

In September, the average sunshine in Blackwater, Arizona, is 9.6h.

What is the UV index intensity in September in Blackwater?

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

Average temperature in September
Blackwater, AZ

Average temperature in September - Blackwater, AZ
  • Average high temperature in September: 95.7°F

The warmest month (with the highest average high temperature) is July (102°F).
The month with the lowest average high temperature is December (63.1°F).

  • Average low temperature in September: 77°F

The month with the highest average low temperature is August (82.8°F).
The coldest month (with the lowest average low temperature) is January (46.8°F).

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Average pressure in September
Blackwater, AZ

Average pressure in September - Blackwater, AZ
  • Average pressure in September: 29.88"

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is June (29.82").

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Average wind speed in September
Blackwater, AZ

Average wind speed in September - Blackwater, AZ
  • Average wind speed in September: 5.8mph

The windiest months (with the highest average wind speed) are April and May (7.3mph).
The calmest month (with the lowest average wind speed) is December (5.4mph).

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Average humidity in September
Blackwater, AZ

Average humidity in September - Blackwater, AZ
  • Average humidity in September: 33%

The month with the highest relative humidity is December (44%).
The month with the lowest relative humidity is June (17%).

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Average rainfall in September
Blackwater, AZ

Average rainfall in September - Blackwater, AZ
  • Average rainfall in September: 0.75"

The wettest month (with the highest rainfall) is February (0.91").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in September
Blackwater, AZ

Average rainfall days in September - Blackwater, AZ
  • Average rainfall days in September: 6.7 days

The month with the highest number of rainy days is July (8.3 days).
The month with the least rainy days is June (1.3 days).

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

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

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 9.6h

The month with the most sunshine is June (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 6.8h).

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Average sunshine days in September
Blackwater, AZ

Average sunshine days in September - Blackwater, AZ
  • Average sunshine days in September: 22 days

The month with the most sunshine days is May (29.2 days).
The month with the least sunshine days is July (19.8 days).

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Average UV index in September
Blackwater, AZ

Average UV index in September - Blackwater, 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
Blackwater, AZ

Average cloud cover in September - Blackwater, AZ
  • Average cloud cover in September: 12

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 6).

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Average visibility in September
Blackwater, AZ

Average visibility in September - Blackwater, 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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