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 brings a decrease in the average high-temperature, shifting from a warm 76.8°F (24.9°C) in August to a refreshing 66°F (18.9°C). In Metaline Falls, the nighttime temperature registers a significant drop from daytime peaks to an average of 39.4°F (4.1°C) in September.Humidity
In September, the average relative humidity is 65%.Rainfall
In Metaline Falls, during September, the rain falls for 11.1 days and regularly aggregates up to 1.06" (27mm) of precipitation. Throughout the year, in Metaline Falls, Washington, there are 147.3 rainfall days, and 20.12" (511mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.51" (13mm) of snow. In Metaline Falls, Washington, during the entire year, snow falls for 95.8 days and aggregates up to 50.39" (1280mm) of snow.Daylight
The average length of the day in September in Metaline Falls is 12h and 34min.On the first day of September in Metaline Falls, Washington, sunrise is at 6:07 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:29 pm PDT.
Sunshine
In Metaline Falls, the average sunshine in September is 9.9h.UV index
In Metaline Falls, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Frequently asked questions
What is the temperature in September in Metaline Falls?
What is the average humidity in September in Metaline Falls?
How much does it rain in Metaline Falls in September?
When does it start snowing in Metaline Falls?
How many hours of daylight does Metaline Falls have in September?
When are sunrise and sunset in September in Metaline Falls?
How many hours of sunshine does Metaline Falls have in September?
What is the UV index reading in September in Metaline Falls?
Average temperature in September
Metaline Falls, WA
- Average high temperature in September: 66°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.6°F).
- Average low temperature in September: 39.4°F
The month with the highest average low temperature is August (46.6°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).
Average pressure in September
Metaline Falls, WA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Metaline Falls, WA
- Average wind speed in September: 3.5mph
The windiest months (with the highest average wind speed) are April, May and June (3.9mph).
The calmest months (with the lowest average wind speed) are January and December (3.2mph).
Average humidity in September
Metaline Falls, WA
- Average humidity in September: 65%
The month with the highest relative humidity is January (95%).
The month with the lowest relative humidity is August (55%).
Average rainfall in September
Metaline Falls, WA
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is May (2.52").
The driest month (with the least rainfall) is August (0.59").
Average rainfall days in September
Metaline Falls, WA
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is April (18.5 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in September
Metaline Falls, WA
- Average snowfall in September: 0.51"
The month with the highest snowfall is January (11.77").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Metaline Falls, WA
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (20.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Metaline Falls, WA
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Metaline Falls, WA
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is August (20.2 days).
The month with the least sunshine days is March (7.6 days).
Average UV index in September
Metaline Falls, 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, November and December (UV index 1).
Average cloud cover in September
Metaline Falls, WA
- Average cloud cover in September: 26
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Metaline Falls, WA
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).
Metaline Falls, Washington, USA
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