September weather forecast and climate
Lake Montezuma, AZ

Weather in September

September, the first month of the autumn, in Lake Montezuma, is also a moderately hot month, with average temperature fluctuating between 59.7°F (15.4°C) and 81.5°F (27.5°C).

Temperature

In September, the average high-temperature slightly decreases, from a hot 87.4°F (30.8°C) in August, to a warm 81.5°F (27.5°C). In September, in Lake Montezuma, the average low-temperature is 59.7°F (15.4°C).

Heat index

In September, the average heat index is estimated at 81°F (27.2°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. 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', 'felt air temperature', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, metabolic differences, differences in body mass, height, and shape, and wind affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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 Lake Montezuma, the average relative humidity in September is 40%.

Rainfall

In September, the rain falls for 9.5 days. Throughout September, 0.94" (24mm) of precipitation is accumulated. In Lake Montezuma, during the entire year, the rain falls for 82.6 days and collects up to 11.69" (297mm) of precipitation.

Snowfall

In Lake Montezuma snow does not fall in May through October.

Daylight

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

Sunshine

The average sunshine in Lake Montezuma, Arizona, is 9.7h.

UV index

In September, the average daily maximum UV index in Lake Montezuma, Arizona, is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Lake Montezuma?

In Lake Montezuma, Arizona, in September, the average high-temperature is 81.5°F (27.5°C), and the average low-temperature is 59.7°F (15.4°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that factores the actual air temperature with the relative humidity, is appraised at 81°F (27.2°C).

What is the average humidity in September in Lake Montezuma?

In Lake Montezuma, Arizona, the average relative humidity in September is 40%.

How many days does it rain in September in Lake Montezuma?

In Lake Montezuma, in September, it is raining for 9.5 days, with typically 0.94" (24mm) of accumulated precipitation.

When it does not snow in Lake Montezuma?

May through October are months without snowfall in Lake Montezuma.

What is the average length of the day in September in Lake Montezuma?

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

How long on average sun shines in September in Lake Montezuma?

In September, the average sunshine is 9.7h.

What is the UV index reading in September in Lake Montezuma?

In Lake Montezuma, Arizona, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in September
Lake Montezuma, AZ

Average temperature in September - Lake Montezuma, AZ
  • Average high temperature in September: 81.5°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (50.9°F).

  • Average low temperature in September: 59.7°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is December (32.2°F).

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Average pressure in September
Lake Montezuma, AZ

Average pressure in September - Lake Montezuma, AZ
  • Average pressure in September: 29.92"

The month with the highest atmospheric pressure is January (30.12").
The month with the lowest atmospheric pressure is June (29.85").

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Average wind speed in September
Lake Montezuma, AZ

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

The windiest months (with the highest average wind speed) are April and May (7mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in September
Lake Montezuma, AZ

Average humidity in September - Lake Montezuma, AZ
  • Average humidity in September: 40%

The month with the highest relative humidity is December (57%).
The month with the lowest relative humidity is June (23%).

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Average rainfall in September
Lake Montezuma, AZ

Average rainfall in September - Lake Montezuma, AZ
  • Average rainfall in September: 0.94"

The wettest month (with the highest rainfall) is July (1.85").
The driest month (with the least rainfall) is June (0.16").

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Average rainfall days in September
Lake Montezuma, AZ

Average rainfall days in September - Lake Montezuma, AZ
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is June (2.3 days).

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Average snowfall in September
Lake Montezuma, AZ

Average snowfall in September - Lake Montezuma, AZ
  • Average snowfall in September: 0"

The month with the highest snowfall is February (2.05").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Lake Montezuma, AZ

Average snowfall days in September - Lake Montezuma, AZ
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.3 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Lake Montezuma, AZ

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

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 9.7h

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
Lake Montezuma, AZ

Average sunshine days in September - Lake Montezuma, AZ
  • Average sunshine days in September: 16.6 days

The month with the most sunshine days is May (26.2 days).
The month with the least sunshine days is July (10.4 days).

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Average UV index in September
Lake Montezuma, AZ

Average UV index in September - Lake Montezuma, AZ
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Lake Montezuma, AZ

Average cloud cover in September - Lake Montezuma, AZ
  • Average cloud cover in September: 11

The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 6).

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Average visibility in September
Lake Montezuma, AZ

Average visibility in September - Lake Montezuma, 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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