September weather forecastEdwall, WA
September
Weather in September
September, the first month of the autumn in Edwall, is also an agreeable month, with an average temperature fluctuating between 52.2°F (11.2°C) and 72.5°F (22.5°C).Temperature
In Edwall, the average high-temperature in September drops from a moderately hot 83.3°F (28.5°C) in August to an agreeable 72.5°F (22.5°C). In Edwall, the nighttime temperature averages to a fresh 52.2°F (11.2°C) during September.Humidity
In September, the average relative humidity is 46%.Rainfall
In Edwall, in September, during 7.6 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. In Edwall, Washington, during the entire year, the rain falls for 127.9 days and collects up to 15.71" (399mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Edwall, during the entire year, snow falls for 65.1 days and aggregates up to 37.36" (949mm) of snow.Daylight
The average length of the day in September in Edwall is 12h and 33min.On the first day of September, sunrise is at 6:11 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:32 pm PDT.
Sunshine
In Edwall, the average sunshine in September is 10.4h.UV index
In Edwall, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Edwall, WA
- Average high temperature in September: 72.5°F
The warmest months (with the highest average high temperature) are July and August (83.3°F).
The month with the lowest average high temperature is December (31.5°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).
Average pressure in September
Edwall, 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
Edwall, WA
- Average wind speed in September: 6.9mph
The windiest months (with the highest average wind speed) are March and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Edwall, WA
- Average humidity in September: 46%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (37%).
Average rainfall in September
Edwall, WA
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is March (1.97").
The driest months (with the least rainfall) are July and August (0.31").
Average rainfall days in September
Edwall, WA
- Average rainfall days in September: 7.6 days
The month with the highest number of rainy days is March (16.3 days).
The month with the least rainy days is August (5.2 days).
Average snowfall in September
Edwall, WA
- Average snowfall in September: 0.04"
The month with the highest snowfall is January (10").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Edwall, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (15.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Edwall, WA
- Average daylight in September: 12h and 30min
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 24min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in September
Edwall, WA
- Average sunshine days in September: 20.9 days
The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is March (10.2 days).
Average UV index in September
Edwall, 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, March, October, November and December (UV index 2).
Average cloud cover in September
Edwall, WA
- Average cloud cover in September: 19
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 12).
Average visibility in September
Edwall, WA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
