Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The arrival of September suggests a slight decrease in the average high-temperature, moving from a hot 94.3°F (34.6°C) in August to a still tropical 88.9°F (31.6°C). Superior, during September nights, observes an average temperature of 70.7°F (21.5°C).Humidity
The average relative humidity in September is 38%.Rainfall
In Superior, Arizona, in September, during 10.9 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. Throughout the year, there are 85.7 rainfall days, and 14.29" (363mm) of precipitation is accumulated.Snowfall
January through March, September and December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Superior, during the entire year, snow falls for 1.7 days and aggregates up to 1.61" (41mm) of snow.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 5:59 am and sunset at 6:49 pm. On the last day of September, sunrise is at 6:18 am and sunset at 6:09 pm MST.
Sunshine
In September, the average sunshine is 9.7h.UV index
In Superior, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 7 translates into these guidelines:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How many days does it rain in September?
When does it start to snow?
How many hours of daylight does Superior have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Superior, AZ
- Average high temperature in September: 88.9°F
The warmest months (with the highest average high temperature) are June and July (95.5°F).
The month with the lowest average high temperature is December (57.9°F).
- Average low temperature in September: 70.7°F
The months with the highest average low temperature are July and August (76.5°F).
The coldest months (with the lowest average low temperature) are January and December (41.4°F).
Average pressure in September
Superior, AZ
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Superior, AZ
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in September
Superior, AZ
- Average humidity in September: 38%
The month with the highest relative humidity is December (49%).
The month with the lowest relative humidity is June (20%).
Average rainfall in September
Superior, AZ
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is August (2.28").
The driest month (with the least rainfall) is June (0.2").
Average rainfall days in September
Superior, AZ
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is June (3.3 days).
Average snowfall in September
Superior, AZ
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are April, May, June, July, August, October and November (0").
Average snowfall days in September
Superior, AZ
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are April, May, June, July, August, October and November (0 days).
Average daylight in September /
Average sunshine in September
Superior, AZ
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- 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 36min).
Average sunshine days in September
Superior, AZ
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is May (27 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Superior, AZ
- Average UV index in September: 7
The month with the highest UV index is June (UV index 8).
The months with the lowest UV index are November and December (UV index 3).
Average cloud cover in September
Superior, AZ
- Average cloud cover in September: 13
The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 7).
Average visibility in September
Superior, 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).
Superior, Arizona, USA
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