September weather forecastWillow Valley, AZ
September
Weather in September
September, the first month of the autumn in Willow Valley, is also a hot month, with an average temperature fluctuating between 77.4°F (25.2°C) and 94.8°F (34.9°C).Temperature
Willow Valley in September experiences a gentle temperature dip, with average high-temperatures reducing from a fiery hot 101.7°F (38.7°C) in August to a tropical 94.8°F (34.9°C). Willow Valley observes an average nighttime low-temperature of 77.4°F (25.2°C) during the month of September.Humidity
In Willow Valley, the average relative humidity in September is 24%.Rainfall
In September, in Willow Valley, the rain falls for 4.3 days. Throughout September, 0.43" (11mm) of precipitation is accumulated. In Willow Valley, during the entire year, the rain falls for 41.8 days and collects up to 4.21" (107mm) of precipitation.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 6:11 am and sunset at 7:04 pm. On the last day of September, sunrise is at 6:33 am and sunset at 6:23 pm MST.
Sunshine
In September, the average sunshine in Willow Valley is 10.1h.UV index
The average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: The UV index of 7 during September leads to these advisories:
Resist extreme sun exposure. Guarding against solar damage is essential. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Willow Valley, AZ
- Average high temperature in September: 94.8°F
The warmest month (with the highest average high temperature) is July (102.6°F).
The month with the lowest average high temperature is December (59°F).
- Average low temperature in September: 77.4°F
The month with the highest average low temperature is August (83.8°F).
The coldest month (with the lowest average low temperature) is December (45.7°F).
Average pressure in September
Willow Valley, AZ
- Average pressure in September: 29.82"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.75"Hg).
Average wind speed in September
Willow Valley, AZ
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is April (9mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in September
Willow Valley, AZ
- Average humidity in September: 24%
The months with the highest relative humidity are January and December (40%).
The month with the lowest relative humidity is June (14%).
Average rainfall in September
Willow Valley, AZ
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is July (0.67").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Willow Valley, AZ
- Average rainfall days in September: 4.3 days
The month with the highest number of rainy days is July (7.8 days).
The month with the least rainy days is June (1.1 days).
Average daylight in September /
Average sunshine in September
Willow Valley, 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: 10h and 6min
The months with the most sunshine are June and August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Willow Valley, AZ
- Average sunshine days in September: 22.8 days
The month with the most sunshine days is November (28.1 days).
The month with the least sunshine days is July (17.9 days).
Average UV index in September
Willow Valley, 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
Willow Valley, AZ
- Average cloud cover in September: 7
The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in September
Willow Valley, 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).
