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
With September's arrival, Prescott sees a decrease in average high-temperatures, moving from 84.2°F (29°C) in August to a still moderately hot 74.1°F (23.4°C). Prescott's temperature tends to fall to an average low of 54.1°F (12.3°C) during the nights of September.Humidity
In Prescott, Washington, the average relative humidity in September is 46%.Rainfall
In Prescott, Washington, in September, it is raining for 6.9 days, with typically 0.51" (13mm) of accumulated precipitation. Throughout the year, there are 142.4 rainfall days, and 15.39" (391mm) of precipitation is accumulated.Snowfall
Months with snowfall in Prescott are January through May, September, November and December. September is the first month it typically snows in Prescott. Throughout September, in the average 0.1 snowfall days, it receives 0.24" (6mm) of snow. In Prescott, during the entire year, snow falls for 29 days and aggregates up to 13.7" (348mm) of snow.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:14 am and sunset at 7:31 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:34 pm PDT.
Sunshine
In Prescott, the average sunshine in September is 10.5h.UV index
The average daily maximum UV index in September in Prescott is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Adopt protective measures - It is advised to guard against sun damage. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Prescott in September?
What is the average humidity in September in Prescott?
How much does it rain in Prescott in September?
When does it start to snow in Prescott?
How many hours of daylight does Prescott have in September?
When are sunrise and sunset in September in Prescott?
How many hours of sunshine does Prescott have in September?
What is the UV index intensity in September in Prescott?
Average temperature in September
Prescott, WA
- Average high temperature in September: 74.1°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is August (61°F).
The coldest month (with the lowest average low temperature) is December (26.2°F).
Average pressure in September
Prescott, WA
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in September
Prescott, WA
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is September (6.3mph).
Average humidity in September
Prescott, WA
- Average humidity in September: 46%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (38%).
Average rainfall in September
Prescott, WA
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is December (1.97").
The driest months (with the least rainfall) are July and August (0.35").
Average rainfall days in September
Prescott, WA
- Average rainfall days in September: 6.9 days
The month with the highest number of rainy days is March (17.6 days).
The month with the least rainy days is July (5.1 days).
Average snowfall in September
Prescott, WA
- Average snowfall in September: 0.24"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August and October (0").
Average snowfall days in September
Prescott, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (8.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Prescott, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 10h and 3min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Prescott, WA
- Average sunshine days in September: 20 days
The month with the most sunshine days is July (24.1 days).
The month with the least sunshine days is February (10 days).
Average UV index in September
Prescott, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Prescott, WA
- Average cloud cover in September: 17
The months with the most cloud cover are January and February (Cloud cover 45).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in September
Prescott, WA
- 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).
Prescott, Washington, USA
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