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
September is characterized by a mild reduction in the average high-temperature, from a torrid 103.6°F (39.8°C) in August to a still fiery hot 97.9°F (36.6°C). September nights in Roll cool down to an average low-temperature of 80.4°F (26.9°C).Humidity
In September, the average relative humidity in Roll is 31%.Rainfall
In Roll, Arizona, during September, the rain falls for 5.6 days and regularly aggregates up to 0.63" (16mm) of precipitation. In Roll, during the entire year, the rain falls for 38.1 days and collects up to 3.9" (99mm) of precipitation.Daylight
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, in Roll, sunrise is at 6:29 am and sunset at 6:21 pm MST.
Sunshine
The average sunshine in September in Roll is 9.8h.UV index
In September, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Fend off overexposure. Sun protection is vital. 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. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
How hot is it in Roll in September?
What is the average humidity in September in Roll?
How much does it rain in Roll in September?
How many hours of daylight does Roll have in September?
What time are sunrise and sunset in September in Roll?
How long on average sun shines in September in Roll?
What is the UV index intensity in September in Roll?
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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