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
September signifies a gentle decline in Silver Creek's average high-temperature, easing from a warm 76.5°F (24.7°C) in August to a pleasant 69.3°F (20.7°C). Silver Creek observes a noteworthy temperature drop from the daily highs during September nights, with a mean temperature of 45.5°F (7.5°C).Humidity
In September, the average relative humidity in Silver Creek is 77%.Rainfall
In Silver Creek, during September, the rain falls for 10.5 days and regularly aggregates up to 1.22" (31mm) of precipitation. In Silver Creek, Washington, during the entire year, the rain falls for 149 days and collects up to 19.37" (492mm) of precipitation.Snowfall
In Silver Creek, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:48 pm. On the last day of September, in Silver Creek, sunrise is at 7:08 am and sunset at 6:51 pm PDT.
Sunshine
In Silver Creek, the average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 4 during September leads to these advisories:
Take precautions - Protection against skin and eye damage is obliged. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Silver Creek in September?
What is the average humidity in September in Silver Creek?
How many days does it rain in September in Silver Creek?
When it does not snow in Silver Creek?
How many hours of daylight does Silver Creek have in September?
What time are sunrise and sunset in September in Silver Creek?
How many hours of sunshine does Silver Creek have in September?
What is the UV index reading in September in Silver Creek?
Average temperature in September
Silver Creek, WA
- Average high temperature in September: 69.3°F
The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is December (41.9°F).
- Average low temperature in September: 45.5°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (31.8°F).
Average pressure in September
Silver Creek, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in September
Silver Creek, WA
- Average wind speed in September: 3.7mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in September
Silver Creek, WA
- Average humidity in September: 77%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are July and August (72%).
Average rainfall in September
Silver Creek, WA
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is January (2.64").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in September
Silver Creek, WA
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is March (16 days).
The month with the least rainy days is July (5.9 days).
Average snowfall in September
Silver Creek, WA
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.97").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Silver Creek, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Silver Creek, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 42min).
Average sunshine days in September
Silver Creek, WA
- Average sunshine days in September: 18.2 days
The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is February (12.1 days).
Average UV index in September
Silver Creek, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Silver Creek, WA
- Average cloud cover in September: 42
The month with the most cloud cover is March (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Silver Creek, WA
- Average visibility in September: 4mi
The months with the highest visibility are July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, September, October, November and December (4mi).
Silver Creek, Washington, USA
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