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
September
Weather in September
Temperature
Davis Dam's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's fiery hot 100°F (37.8°C) to a hot 92.8°F (33.8°C). Davis Dam's nights in September cool down to an average low-temperature of 75°F (23.9°C).Humidity
In September, the average relative humidity is 24%.Rainfall
In Davis Dam, in September, during 3.5 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. In Davis Dam, during the entire year, the rain falls for 44 days and collects up to 4.21" (107mm) of precipitation.Snowfall
In Davis Dam, snow does not fall in January through November.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 6:11 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 6:23 pm PDT.
Sunshine
The average sunshine in September is 9.9h.UV index
In Davis Dam, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: In September, a regular UV index of 7 translates into these guidelines:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day 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
Davis Dam, AZ
- Average high temperature in September: 92.8°F
The warmest month (with the highest average high temperature) is July (100.8°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in September: 75°F
The month with the highest average low temperature is August (81.5°F).
The coldest month (with the lowest average low temperature) is December (43.5°F).
Average pressure in September
Davis Dam, AZ
- Average pressure in September: 29.83"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.76"Hg).
Average wind speed in September
Davis Dam, AZ
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is September (7.6mph).
Average humidity in September
Davis Dam, AZ
- Average humidity in September: 24%
The month with the highest relative humidity is January (42%).
The month with the lowest relative humidity is June (14%).
Average rainfall in September
Davis Dam, AZ
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is December (0.67").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Davis Dam, AZ
- Average rainfall days in September: 3.5 days
The month with the highest number of rainy days is July (5.9 days).
The month with the least rainy days is June (1.1 days).
Average snowfall days in September
Davis Dam, 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
Davis Dam, 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: 9h and 5min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Davis Dam, AZ
- Average sunshine days in September: 24.6 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is July (20.3 days).
Average UV index in September
Davis Dam, 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
Davis Dam, AZ
- Average cloud cover in September: 6
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
Davis Dam, 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).