September weather forecast
Marana, AZ

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Weather in September

Following the sweltering summer, September ushers in cooler temperatures in Marana, with the average maximum temperature dropping to 91.9°F (33.3°C). Compared with August, the decline in maximum temperatures is noteworthy, as are the shorter daylight hours, offering early indicators of the fall season. Despite these signs of change, the rainfall volume remains moderately high. While atmospheric pressure remains steady, wind statistics identify a minor increase in wind gusts. Also, the reduction in UV index from 8 to 7 signifies a less harsh solar radiation, offering respite after the long summer.

Temperature

Marana marks the start of September with an average high-temperature of a tropical 91.9°F (33.3°C), hinting at a slight fluctuation from August's 97°F (36.1°C). In September, Marana records an average nighttime temperature of 74.1°F (23.4°C).

Humidity

In September, the average relative humidity is 37%.

Rainfall

In Marana, in September, it is raining for 9.6 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, in Marana, there are 71.5 rainfall days, and 9.72" (247mm) of precipitation is accumulated.

Daylight

In Marana, the average length of the day in September is 12h and 21min.
On the first day of the month, sunrise is at 6:00 am and sunset at 6:48 pm. On the last day of September, in Marana, sunrise is at 6:18 am and sunset at 6:10 pm MST.

Sunshine

In September, the average sunshine is 9.6h.

UV index

The average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 7 during September translates into the following directions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Experience reduced UV exposure by about half when donning a wide-brim hat.
Updated: Jul 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

The average high-temperature, in September, in Marana, is 91.9°F (33.3°C), while the average low-temperature is 74.1°F (23.4°C).

What is the average humidity in September?

In September, the average relative humidity in Marana is 37%.

How many days does it rain in September?

In Marana, in September, it is raining for 9.6 days, with typically 1.34" (34mm) of accumulated precipitation.

How many hours of daylight does Marana have in September?

The average day length in September is 12h and 21min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:00 am and sunset at 6:48 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 6:10 pm MST.

How many hours of sunshine does Marana have in September?

In September, the average sunshine duration is 9.6h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Marana, AZ

Average temperature in September - Marana, AZ
  • Average high temperature in September: 91.9°F

The warmest month (with the highest average high temperature) is June (99°F).
The month with the lowest average high temperature is December (61.9°F).

  • Average low temperature in September: 74.1°F

The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is December (44.6°F).

Average pressure in September
Marana, AZ

Average pressure in September - Marana, AZ
  • Average pressure in September: 29.87"Hg

The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).

Average wind speed in September
Marana, AZ

Average wind speed in September - Marana, AZ
  • Average wind speed in September: 5.9mph

The windiest months (with the highest average wind speed) are April and May (7.9mph).
The calmest months (with the lowest average wind speed) are January and December (5.5mph).

Average humidity in September
Marana, AZ

Average humidity in September - Marana, AZ
  • Average humidity in September: 37%

The month with the highest relative humidity is December (45%).
The month with the lowest relative humidity is June (18%).

Average rainfall in September
Marana, AZ

Average rainfall in September - Marana, AZ
  • Average rainfall in September: 1.34"

The wettest month (with the highest rainfall) is August (1.77").
The driest months (with the least rainfall) are April and May (0.2").

Average rainfall days in September
Marana, AZ

Average rainfall days in September - Marana, AZ
  • Average rainfall days in September: 9.6 days

The month with the highest number of rainy days is July (13.8 days).
The month with the least rainy days is May (2.4 days).

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

Average daylight in September / Average sunshine in September - Marana, AZ
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

Average sunshine days in September
Marana, AZ

Average sunshine days in September - Marana, AZ
  • Average sunshine days in September: 18 days

The month with the most sunshine days is May (28.2 days).
The month with the least sunshine days is July (13 days).

Average UV index in September
Marana, AZ

Average UV index in September - Marana, AZ
  • Average UV index in September: 7

The 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).

Average cloud cover in September
Marana, AZ

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

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 7).

Average visibility in September
Marana, AZ

Average visibility in September - Marana, AZ
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Marana, Arizona, USA

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