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 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 transition into September subtly indicates a reduction in the average high-temperature, down to a hot 90.7°F (32.6°C) from August's sweltering 96.1°F (35.6°C). An average low-temperature of 74.1°F (23.4°C) is noted during the nights in September in Yarnell.Humidity
In Yarnell, the average relative humidity in September is 32%.Rainfall
In Yarnell, during September, the rain falls for 6.7 days and regularly aggregates up to 1.14" (29mm) of precipitation. In Yarnell, during the entire year, the rain falls for 60.7 days and collects up to 9.13" (232mm) of precipitation.Snowfall
In Yarnell, snow does not fall in January through November.Daylight
In Yarnell, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:04 am and sunset at 6:56 pm. On the last day of September, sunrise is at 6:25 am and sunset at 6:16 pm MST.
Sunshine
In September, the average sunshine in Yarnell is 9.7h.UV index
In September, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 7 in September translates into the following instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
How hot is it in Yarnell in September?
What is the average humidity in September in Yarnell?
How much does it rain in Yarnell in September?
When it does not snow in Yarnell?
What is the average length of the day in September in Yarnell?
What time are sunrise and sunset in September in Yarnell?
How long on average sun shines in September in Yarnell?
What is the UV index reading in September in Yarnell?
Average temperature in September
Yarnell, AZ
- Average high temperature in September: 90.7°F
The warmest month (with the highest average high temperature) is July (97.3°F).
The month with the lowest average high temperature is December (58.8°F).
- Average low temperature in September: 74.1°F
The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is December (43.3°F).
Average pressure in September
Yarnell, AZ
- Average pressure in September: 29.85"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).
Average wind speed in September
Yarnell, AZ
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is December (5.5mph).
Average humidity in September
Yarnell, AZ
- Average humidity in September: 32%
The month with the highest relative humidity is December (45%).
The month with the lowest relative humidity is June (17%).
Average rainfall in September
Yarnell, AZ
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is August (1.26").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Yarnell, AZ
- Average rainfall days in September: 6.7 days
The month with the highest number of rainy days is July (10.5 days).
The month with the least rainy days is June (1.6 days).
Average snowfall days in September
Yarnell, AZ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Yarnell, AZ
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- 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 48min).
Average sunshine days in September
Yarnell, AZ
- Average sunshine days in September: 21 days
The month with the most sunshine days is May (28.3 days).
The month with the least sunshine days is August (17.1 days).
Average UV index in September
Yarnell, AZ
- Average UV index in September: 7
The months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Yarnell, AZ
- Average cloud cover in September: 9
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility in September
Yarnell, 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).
Yarnell, Arizona, USA
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