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's advent presents an average high-temperature of a tropical 91.2°F (32.9°C), indicating a slight variation from the conditions of the previous month. Nightly temperatures drop to an average low of 73.6°F (23.1°C) in September.Humidity
The average relative humidity in September in Santa Rosa is 39%.Rainfall
In Santa Rosa, in September, during 7.4 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. Throughout the year, in Santa Rosa, there are 52.9 rainfall days, and 6.46" (164mm) of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 21min.On the first day of September, sunrise is at 6:03 am and sunset at 6:52 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 6:13 pm MST.
Sunshine
In Santa Rosa, the average sunshine in September is 9.7h.UV index
The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 7 during September translates into the following directions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
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 Santa Rosa have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Santa Rosa, AZ
- Average high temperature in September: 91.2°F
The warmest month (with the highest average high temperature) is June (97.3°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in September: 73.6°F
The month with the highest average low temperature is July (78.6°F).
The coldest month (with the lowest average low temperature) is December (45.5°F).
Average pressure in September
Santa Rosa, AZ
- Average pressure in September: 29.83"Hg
The month with the highest atmospheric pressure is January (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.78"Hg).
Average wind speed in September
Santa Rosa, AZ
- Average wind speed in September: 6.7mph
The windiest month (with the highest average wind speed) is May (9.3mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).
Average humidity in September
Santa Rosa, AZ
- Average humidity in September: 39%
The month with the highest relative humidity is December (44%).
The month with the lowest relative humidity is June (20%).
Average rainfall in September
Santa Rosa, AZ
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is August (1.38").
The driest month (with the least rainfall) is May (0.04").
Average rainfall days in September
Santa Rosa, AZ
- Average rainfall days in September: 7.4 days
The month with the highest number of rainy days is July (11.5 days).
The month with the least rainy days is May (1 days).
Average daylight in September /
Average sunshine in September
Santa Rosa, 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 June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in September
Santa Rosa, AZ
- Average sunshine days in September: 21.4 days
The month with the most sunshine days is May (29.8 days).
The month with the least sunshine days is August (17.2 days).
Average UV index in September
Santa Rosa, AZ
- Average UV index in September: 7
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Santa Rosa, AZ
- Average cloud cover in September: 13
The month with the most cloud cover is December (Cloud cover 20).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility in September
Santa Rosa, 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).
Santa Rosa, Arizona, USA
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