September weather forecast and climate
Tumacacori, AZ

Weather in September

The first month of the autumn, September, is still a warm month in Tumacacori, Arizona, with temperature in the range of an average high of 83.7°F (28.7°C) and an average low of 64.6°F (18.1°C).

Temperature

In September, the average high-temperature is almost the same as in August - a warm 83.7°F (28.7°C). In Tumacacori, the average low-temperature is 64.6°F (18.1°C).

Heat index

In September, the average heat index is estimated at 84.7°F (29.3°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, pregnancy, wind), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In September, the average relative humidity is 50%.

Rainfall

In September, in Tumacacori, Arizona, the rain falls for 12.2 days. Throughout September, 2.32" (59mm) of precipitation is accumulated. Throughout the year, there are 87.8 rainfall days, and 15.43" (392mm) of precipitation is accumulated.

Snowfall

April through November are months without snowfall in Tumacacori.

Daylight

The average length of the day in Tumacacori is 12.3h.

Sunshine

In September, the average sunshine is 9.6h.

UV index

The average daily maximum UV index in Tumacacori is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to the UV radiation for average individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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 Tumacacori?

The average high-temperature, in September, in Tumacacori, is 83.7°F (28.7°C), while the average low-temperature is 64.6°F (18.1°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that factores the actual air temperature with the relative humidity, is evaluated at 84.7°F (29.3°C).

What is the average humidity in September in Tumacacori?

The average relative humidity in September in Tumacacori, Arizona, is 50%.

How many days does it rain in September in Tumacacori?

In September, the rain falls for 12.2 days. Throughout September, 2.32" (59mm) of precipitation is accumulated.

When it does not snow in Tumacacori?

April through November are months without snowfall in Tumacacori, Arizona.

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

The average length of the day in September in Tumacacori is 12.3h.

How long on average sun shines in September in Tumacacori?

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

What is the UV index reading in September in Tumacacori?

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

Average temperature in September
Tumacacori, AZ

Average temperature in September - Tumacacori, AZ
  • Average high temperature in September: 83.7°F

The warmest month (with the highest average high temperature) is June (91°F).
The month with the lowest average high temperature is December (59.2°F).

  • Average low temperature in September: 64.6°F

The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is December (39.9°F).

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Average pressure in September
Tumacacori, AZ

Average pressure in September - Tumacacori, AZ
  • Average pressure in September: 29.87"

The month with the highest atmospheric pressure is January (30.06").
The month with the lowest atmospheric pressure is June (29.82").

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Average wind speed in September
Tumacacori, AZ

Average wind speed in September - Tumacacori, AZ
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is May (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in September
Tumacacori, AZ

Average humidity in September - Tumacacori, AZ
  • Average humidity in September: 50%

The month with the highest relative humidity is August (51%).
Months with the lowest relative humidity are May and June (24%).

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Average rainfall in September
Tumacacori, AZ

Average rainfall in September - Tumacacori, AZ
  • Average rainfall in September: 2.32"

The wettest month (with the highest rainfall) is July (4.53").
The driest month (with the least rainfall) is May (0.16").

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Average rainfall days in September
Tumacacori, AZ

Average rainfall days in September - Tumacacori, AZ
  • Average rainfall days in September: 12.2 days

The month with the highest number of rainy days is July (21.9 days).
The month with the least rainy days is May (1.8 days).

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Average snowfall in September
Tumacacori, AZ

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

The month with the highest snowfall is December (1.06").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Tumacacori, AZ

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

The month with the highest number of snowfall days is February (0.8 days).
Months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

Average daylight in September / Average sunshine in September - Tumacacori, 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: 9.6h

The month with the most sunshine is June (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.9h).

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Average sunshine days in September
Tumacacori, AZ

Average sunshine days in September - Tumacacori, AZ
  • Average sunshine days in September: 15 days

The month with the most sunshine days is May (28.8 days).
The month with the least sunshine days is July (6.6 days).

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Average UV index in September
Tumacacori, AZ

Average UV index in September - Tumacacori, AZ
  • Average UV index in September: 6

Months with the highest UV index are June and August (UV index 7).
Months with the lowest UV index are January, November and December (UV index 3).

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Average cloud cover in September
Tumacacori, AZ

Average cloud cover in September - Tumacacori, AZ
  • Average cloud cover in September: 17

The month with the most cloud cover is July (Cloud cover 24).
The month with the least cloud cover is May (Cloud cover 7).

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Average visibility in September
Tumacacori, AZ

Average visibility in September - Tumacacori, 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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