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 arrival of September signals a subtle shift in temperature, down from a moderately hot 77.5°F (25.3°C) in August to an agreeable 70.2°F (21.2°C). The temperature notes a substantial fall from the daily peak to an average of 46.6°F (8.1°C) during September nights.Humidity
In September, the average relative humidity is 79%.Rainfall
In Ryderwood, in September, it is raining for 12.7 days, with typically 1.89" (48mm) of accumulated precipitation. In Ryderwood, during the entire year, the rain falls for 188.7 days and collects up to 33.54" (852mm) of precipitation.Snowfall
April through October are months without snowfall in Ryderwood.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:50 pm. On the last day of September, in Ryderwood, sunrise is at 7:10 am and sunset at 6:53 pm PDT.
Sunshine
The average sunshine in September is 8.4h.UV index
In Ryderwood, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum UV index of 3 in September translates into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Ryderwood in September?
What is the average humidity in September in Ryderwood?
How much does it rain in Ryderwood in September?
When it does not snow in Ryderwood?
What is the average length of the day in September in Ryderwood?
When are sunrise and sunset in September in Ryderwood?
How long on average sun shines in September in Ryderwood?
What is the UV index intensity in September in Ryderwood?
Average temperature in September
Ryderwood, WA
- Average high temperature in September: 70.2°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in September: 46.6°F
The month with the highest average low temperature is August (49.3°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).
Average pressure in September
Ryderwood, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in September
Ryderwood, WA
- Average wind speed in September: 3.6mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in September
Ryderwood, WA
- Average humidity in September: 79%
The months with the highest relative humidity are February and November (89%).
The month with the lowest relative humidity is July (73%).
Average rainfall in September
Ryderwood, WA
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is January (5.12").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days in September
Ryderwood, WA
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is March (20.7 days).
The month with the least rainy days is July (7.4 days).
Average snowfall in September
Ryderwood, WA
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.65").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Ryderwood, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Ryderwood, 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: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The months with the least sunshine are February and December (Average sunshine: 3h and 36min).
Average sunshine days in September
Ryderwood, WA
- Average sunshine days in September: 15 days
The month with the most sunshine days is August (20.6 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in September
Ryderwood, WA
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Ryderwood, WA
- Average cloud cover in September: 45
The month with the most cloud cover is February (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Ryderwood, WA
- Average visibility in September: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
Ryderwood, Washington, USA
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