September weather forecast and climate
Gilbert, AZ

Weather in September

September, the first month of the autumn, in Gilbert, is also a sweltering month, with average temperature varying between 95.4°F (35.2°C) and 77.4°F (25.2°C).

Temperature

In Gilbert, Arizona, the average high-temperature marginally drops, from a very hot 100.9°F (38.3°C) in August, to a still torrid 95.4°F (35.2°C). The average low-temperature, is 77.4°F (25.2°C).

Humidity

The average relative humidity in Gilbert is 31%.

Rainfall

In Gilbert, it is raining for 7.4 days, with typically 0.79" (20mm) of accumulated precipitation. Throughout the year, there are 60.2 rainfall days, and 7.91" (201mm) of precipitation is accumulated.

Daylight

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

Sunshine

The average sunshine in September is 9.7h.

UV index

The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 7 interpret into the following advice:
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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Gilbert?

In Gilbert, in September, the average high-temperature is 95.4°F (35.2°C), and the average low-temperature is 77.4°F (25.2°C).

What is the average humidity in September in Gilbert?

The average relative humidity in September is 31%.

How many days does it rain in September in Gilbert?

In Gilbert, Arizona, in September, it is raining for 7.4 days, with typically 0.79" (20mm) of accumulated precipitation.

How many hours of daylight does Gilbert have in September?

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

How long on average sun shines in September in Gilbert?

The average sunshine in September in Gilbert, Arizona, is 9.7h.

What is the UV index reading in September in Gilbert?

The average daily maximum UV index in September in Gilbert is 7. A UV Index reading of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV rays.

Average temperature in September
Gilbert, AZ

Average temperature in September - Gilbert, AZ
  • Average high temperature in September: 95.4°F

The warmest month (with the highest average high temperature) is July (101.8°F).
The month with the lowest average high temperature is December (62.4°F).

  • Average low temperature in September: 77.4°F

The month with the highest average low temperature is August (83.8°F).
The coldest month (with the lowest average low temperature) is January (46.4°F).

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Average pressure in September
Gilbert, AZ

Average pressure in September - Gilbert, 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
Gilbert, AZ

Average wind speed in September - Gilbert, AZ
  • Average wind speed in September: 5.2mph

The windiest months (with the highest average wind speed) are April and May (6.4mph).
The calmest month (with the lowest average wind speed) is December (4.5mph).

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Average humidity in September
Gilbert, AZ

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

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
Gilbert, AZ

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

The wettest month (with the highest rainfall) is July (1.1").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in September
Gilbert, AZ

Average rainfall days in September - Gilbert, AZ
  • Average rainfall days in September: 7.4 days

The month with the highest number of rainy days is July (10.6 days).
The month with the least rainy days is June (1.2 days).

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

Average daylight in September / Average sunshine in September - Gilbert, 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: 9.7h

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
Gilbert, AZ

Average sunshine days in September - Gilbert, AZ
  • Average sunshine days in September: 20 days

The month with the most sunshine days is May (28.4 days).
The month with the least sunshine days is July (17.6 days).

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Average UV index in September
Gilbert, AZ

Average UV index in September - Gilbert, 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
Gilbert, AZ

Average cloud cover in September - Gilbert, AZ
  • Average cloud cover in September: 10

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 5).

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Average visibility in September
Gilbert, AZ

Average visibility in September - Gilbert, 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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