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 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
A subtle shift in Roll's weather is observed as August turns into September, with the average high temperature reducing from a fiery hot 103.6°F (39.8°C) to a still torrid 97.9°F (36.6°C). The mean low-temperature during September nights is a warm 80.4°F (26.9°C).Humidity
In September, the average relative humidity is 31%.Rainfall
In Roll, in September, it is raining for 5.6 days, with typically 0.63" (16mm) of accumulated precipitation. In Roll, during the entire year, the rain falls for 38.1 days and collects up to 3.9" (99mm) of precipitation.Daylight
In Roll, Arizona, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:11 am and sunset at 7:00 pm. On the last day of September, sunrise is at 6:29 am and sunset at 6:21 pm MST.
Sunshine
In September, the average sunshine is 9.8h.UV index
In September, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The daily maximum UV index of 7 in September interprets into the following advice:
Deflect overexposure. Sun protection is a necessity. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How many days does it rain in September?
How many hours of daylight does Roll have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Roll have in September?
What is the UV index reading in September?
Average temperature in September
Roll, AZ
- Average high temperature in September: 97.9°F
The warmest month (with the highest average high temperature) is July (103.8°F).
The month with the lowest average high temperature is December (64.9°F).
- Average low temperature in September: 80.4°F
The month with the highest average low temperature is August (85.6°F).
The coldest months (with the lowest average low temperature) are January and December (49.8°F).
Average pressure in September
Roll, AZ
- Average pressure in September: 29.78"Hg
The month with the highest atmospheric pressure is January (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.73"Hg).
Average wind speed in September
Roll, AZ
- Average wind speed in September: 6.7mph
The windiest month (with the highest average wind speed) is July (8.4mph).
The calmest months (with the lowest average wind speed) are November and December (6mph).
Average humidity in September
Roll, AZ
- Average humidity in September: 31%
The month with the highest relative humidity is December (39%).
The month with the lowest relative humidity is June (21%).
Average rainfall in September
Roll, AZ
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is July (0.71").
The driest month (with the least rainfall) is May (0.04").
Average rainfall days in September
Roll, AZ
- Average rainfall days in September: 5.6 days
The month with the highest number of rainy days is July (7.6 days).
The month with the least rainy days is May (0.9 days).
Average daylight in September /
Average sunshine in September
Roll, 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 5min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in September
Roll, AZ
- Average sunshine days in September: 22.3 days
The month with the most sunshine days is May (29.7 days).
The month with the least sunshine days is July (19.8 days).
Average UV index in September
Roll, AZ
- Average UV index in September: 7
The months with the highest UV index are June, July and August (UV index 8).
The months with the lowest UV index are November and December (UV index 4).
Average cloud cover in September
Roll, AZ
- Average cloud cover in September: 9
The month with the most cloud cover is December (Cloud cover 17).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in September
Roll, 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).
Roll, Arizona, USA
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