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 onset of September results in a decrease in the average high-temperature, receding from a moderately hot 81.1°F (27.3°C) in August to an agreeable 69.8°F (21°C). Kettle Falls documents a substantial deviation from daytime highs with a consistent low-temperature of 42.8°F (6°C) during September nights.Humidity
In September, the average relative humidity in Kettle Falls is 61%.Rainfall
In Kettle Falls, during September, the rain falls for 10.2 days and regularly aggregates up to 1.02" (26mm) of precipitation. Throughout the year, in Kettle Falls, Washington, there are 156.3 rainfall days, and 16.18" (411mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, September through December. September is the first month it typically snows in Kettle Falls. Throughout September, in the average 0.3 snowfall days, it receives 0.39" (10mm) of snow. In Kettle Falls, Washington, during the entire year, snow falls for 53.2 days and aggregates up to 25.16" (639mm) of snow.Daylight
The average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 6:10 am and sunset at 7:33 pm. On the last day of September, in Kettle Falls, Washington, sunrise is at 6:51 am and sunset at 6:32 pm PDT.
Sunshine
In September, the average sunshine in Kettle Falls is 10.2h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What is the usual temperature for Kettle Falls in September?
What is the average humidity in September in Kettle Falls?
How many days does it rain in September in Kettle Falls?
When does it start snowing in Kettle Falls?
How many hours of daylight does Kettle Falls have in September?
When are sunrise and sunset in September in Kettle Falls?
How many hours of sunshine does Kettle Falls have in September?
How high is the UV index in September in Kettle Falls?
Average temperature in September
Kettle Falls, WA
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (28.9°F).
- Average low temperature in September: 42.8°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is February (16°F).
Average pressure in September
Kettle Falls, WA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).
Average wind speed in September
Kettle Falls, WA
- Average wind speed in September: 3.4mph
The windiest month (with the highest average wind speed) is April (3.9mph).
The calmest months (with the lowest average wind speed) are January, February and December (3mph).
Average humidity in September
Kettle Falls, WA
- Average humidity in September: 61%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (50%).
Average rainfall in September
Kettle Falls, WA
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in September
Kettle Falls, WA
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is March (18.4 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in September
Kettle Falls, WA
- Average snowfall in September: 0.39"
The month with the highest snowfall is January (6.61").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in September
Kettle Falls, WA
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (13.7 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Kettle 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 24min).
- Average sunshine in September: 10h and 1min
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 48min).
Average sunshine days in September
Kettle Falls, WA
- Average sunshine days in September: 17.6 days
The month with the most sunshine days is August (20.8 days).
The month with the least sunshine days is March (9 days).
Average UV index in September
Kettle 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
Kettle Falls, WA
- Average cloud cover in September: 23
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in September
Kettle 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).
Kettle Falls, Washington, USA
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