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 beginning of September subtly marks a decrease in the average high-temperature, transitioning from an agreeable 68°F (20°C) in August to an enjoyable 62.6°F (17°C). Blyn records a mean low-temperature of 49.3°F (9.6°C) in September.Humidity
In Blyn, Washington, the average relative humidity in September is 79%.Rainfall
In Blyn, Washington, in September, it is raining for 12.9 days, with typically 1.54" (39mm) of accumulated precipitation. Throughout the year, in Blyn, Washington, there are 174.1 rainfall days, and 19.45" (494mm) of precipitation is accumulated.Snowfall
In Blyn, Washington, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 33min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:52 pm. On the last day of September, sunrise is at 7:11 am and sunset at 6:52 pm PDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
The months with the highest UV index in Blyn are May through September, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 4 during September leads to these advisories:
Take necessary precautions - Protection from skin and eye injury is mandatory. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
What are the temperatures in Blyn in September?
What is the average humidity in September in Blyn?
How much does it rain in Blyn in September?
When it does not snow in Blyn?
What is the average length of the day in September in Blyn?
When is the sunrise / sunset in September in Blyn?
How many hours of sunshine does Blyn have in September?
What is the month with the highest UV index in Blyn?
What is the UV index intensity in September in Blyn?
Average temperature in September
Blyn, WA
- Average high temperature in September: 62.6°F
The warmest month (with the highest average high temperature) is August (68°F).
The month with the lowest average high temperature is December (41.2°F).
- Average low temperature in September: 49.3°F
The month with the highest average low temperature is August (52.3°F).
The coldest month (with the lowest average low temperature) is February (34.3°F).
Average pressure in September
Blyn, WA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in September
Blyn, WA
- Average wind speed in September: 3.7mph
The windiest month (with the highest average wind speed) is November (5.9mph).
The calmest months (with the lowest average wind speed) are August and September (3.7mph).
Average humidity in September
Blyn, WA
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are July and August (75%).
Average rainfall in September
Blyn, WA
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is January (2.56").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in September
Blyn, WA
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.8 days).
Average snowfall in September
Blyn, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Blyn, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 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
Blyn, WA
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Blyn, WA
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is August (21.4 days).
The month with the least sunshine days is March (8.9 days).
Average UV index in September
Blyn, WA
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Blyn, WA
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Blyn, 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).
Blyn, Washington, USA
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