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 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
September's arrival subtly correlates with a reduction in the average high-temperature, down from a warm 80.2°F (26.8°C) in August to a still moderately hot 73.8°F (23.2°C). During September, the average low-temperature is a cool 54.5°F (12.5°C).Humidity
In September, the average relative humidity in Window Rock is 43%.Rainfall
In Window Rock, during September, the rain falls for 11.9 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Window Rock, during the entire year, the rain falls for 90.1 days and collects up to 11.93" (303mm) of precipitation.Snowfall
In Window Rock, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:11 am and sunset at 7:00 pm MDT.
Sunshine
In Window Rock, Arizona, the average sunshine in September is 10.8h.UV index
In September, the average daily maximum UV index in Window Rock, Arizona, is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Make use of precautions - It is urged to ward off sun damage. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What are September temperatures in Window Rock?
What is the average humidity in September in Window Rock?
How much does it rain in Window Rock in September?
When it does not snow in Window Rock?
Does it snow in Window Rock in September?
How many hours of daylight does Window Rock have in September?
What time are sunrise and sunset in September in Window Rock?
How long on average sun shines in September in Window Rock?
What is the UV index intensity in September in Window Rock?
Average temperature in September
Window Rock, AZ
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (38.5°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in September
Window Rock, AZ
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Window Rock, AZ
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in September
Window Rock, AZ
- Average humidity in September: 43%
The month with the highest relative humidity is January (70%).
The month with the lowest relative humidity is June (23%).
Average rainfall in September
Window Rock, AZ
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is July (2.44").
The driest month (with the least rainfall) is June (0.35").
Average rainfall days in September
Window Rock, AZ
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is July (19.2 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in September
Window Rock, AZ
- Average snowfall in September: 0"
The month with the highest snowfall is December (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Window Rock, AZ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Window Rock, AZ
- Average daylight in September: 12h and 2min
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 48min).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 6h and 24min).
Average sunshine days in September
Window Rock, AZ
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is November (23.7 days).
The month with the least sunshine days is July (8.3 days).
Average UV index in September
Window Rock, 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
Window Rock, AZ
- Average cloud cover in September: 13
The month with the most cloud cover is January (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 10).
Average visibility in September
Window Rock, AZ
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Window Rock, Arizona, USA
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