September weather forecastSedona, AZ

September
Weather in September
September sees a gradual shift in temperatures, such as cooling evenings that mark the onset of autumn. However, daytime temperatures remain relatively high, continuing the city’s summer-like sensation. While locals and visitors continue to enjoy outdoor activities, forests display an appealing blend of green and brown, accentuating the city's scenic beauty.Temperature
In the transition to September, Sedona observes a minor drop in the average high-temperature, shifting from 83.3°F (28.5°C) in August to a still moderately hot 77.5°F (25.3°C). With a significant temperature contrast, nighttime temperatures hover around an average low of 55.2°F (12.9°C) in September.Humidity
The average relative humidity in September in Sedona is 43%.Rainfall
In Sedona, Arizona, during September, the rain falls for 8.9 days and regularly aggregates up to 0.87" (22mm) of precipitation. In Sedona, during the entire year, the rain falls for 86 days and collects up to 11.65" (296mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 23min.On the first day of September in Sedona, sunrise is at 6:00 am and sunset at 6:53 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 6:11 pm MST.
Sunshine
In September, the average sunshine is 9.7h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 5 suggests this advice:
Exercise prevention - Protecting skin and eyes from harm is required. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sedona, AZ
- Average high temperature in September: 77.5°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (46°F).
- Average low temperature in September: 55.2°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is December (27.9°F).
Average pressure in September
Sedona, AZ
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Sedona, AZ
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Sedona, AZ
- Average humidity in September: 43%
The month with the highest relative humidity is January (62%).
The month with the lowest relative humidity is June (24%).
Average rainfall in September
Sedona, AZ
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is July (2.28").
The driest month (with the least rainfall) is June (0.16").
Average rainfall days in September
Sedona, AZ
- Average rainfall days in September: 8.9 days
The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is June (2.8 days).
Average snowfall in September
Sedona, AZ
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.68").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Sedona, AZ
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (3.5 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Sedona, AZ
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 42min
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 42min).
Average sunshine days in September
Sedona, AZ
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is June (26 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in September
Sedona, AZ
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Sedona, AZ
- Average cloud cover in September: 11
The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility in September
Sedona, 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).





