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
The transition into September indicates a reduction in the average high-temperature, down to an agreeable 70.7°F (21.5°C) from August's warm 82.2°F (27.9°C). Dryden anticipates a considerable cooling off from the daytime high to an average minimum temperature of 46.4°F (8°C) in September.Humidity
In September, the average relative humidity in Dryden is 58%.Rainfall
In Dryden, in September, during 6.3 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. Throughout the year, in Dryden, there are 113.5 rainfall days, and 12.32" (313mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Dryden.Daylight
The average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:42 pm PDT.
Sunshine
In September, the average sunshine in Dryden is 10.7h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A maximum UV index of 3 in September translates into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. When the Sun is at its strongest around midday, find shade and limit exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Dryden?
What is the average humidity in September in Dryden?
How many days does it rain in September in Dryden?
When it does not snow in Dryden?
What is the average length of the day in September in Dryden?
When are sunrise and sunset in September in Dryden?
How many hours of sunshine does Dryden have in September?
What is the UV index reading in September in Dryden?
Average temperature in September
Dryden, WA
- Average high temperature in September: 70.7°F
The warmest months (with the highest average high temperature) are July and August (82.2°F).
The month with the lowest average high temperature is December (32.5°F).
- Average low temperature in September: 46.4°F
The month with the highest average low temperature is August (52.2°F).
The coldest month (with the lowest average low temperature) is December (20.3°F).
Average pressure in September
Dryden, WA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.94"Hg).
Average wind speed in September
Dryden, WA
- Average wind speed in September: 4.8mph
The windiest months (with the highest average wind speed) are June and July (5.8mph).
The calmest month (with the lowest average wind speed) is December (3.4mph).
Average humidity in September
Dryden, WA
- Average humidity in September: 58%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are July and August (49%).
Average rainfall in September
Dryden, WA
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is January (2.05").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in September
Dryden, WA
- Average rainfall days in September: 6.3 days
The month with the highest number of rainy days is March (15 days).
The month with the least rainy days is August (3.3 days).
Average snowfall in September
Dryden, WA
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Dryden, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (7.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dryden, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 10h and 4min
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: 4h and 24min).
Average sunshine days in September
Dryden, WA
- Average sunshine days in September: 22 days
The month with the most sunshine days is August (26.1 days).
The month with the least sunshine days is March (12.4 days).
Average UV index in September
Dryden, WA
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Dryden, WA
- Average cloud cover in September: 20
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in September
Dryden, WA
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Dryden, Washington, USA
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