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's arrival comes with a decrease in the average high-temperature, moving from a warm 78.6°F (25.9°C) in August to a pleasant 69.1°F (20.6°C). In Trout Lake, in September, the average low-temperature is a chilly 47.7°F (8.7°C).Humidity
In September, the average relative humidity in Trout Lake is 65%.Rainfall
In September, in Trout Lake, the rain falls for 8.2 days. Throughout September, 0.91" (23mm) of precipitation is accumulated. In Trout Lake, during the entire year, the rain falls for 152.5 days and collects up to 26.93" (684mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Trout Lake, Washington, is 12h and 31min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:47 pm PDT.
Sunshine
The average sunshine in September is 10.2h.UV index
In Trout Lake, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Frequently asked questions
What are the temperatures in Trout Lake in September?
What is the average humidity in September in Trout Lake?
How many days does it rain in September in Trout Lake?
When it does not snow in Trout Lake?
What is the average length of the day in September in Trout Lake?
When is the sunrise / sunset in September in Trout Lake?
How long on average sun shines in September in Trout Lake?
What is the UV index reading in September in Trout Lake?
Average temperature in September
Trout Lake, WA
- Average high temperature in September: 69.1°F
The warmest month (with the highest average high temperature) is August (78.6°F).
The month with the lowest average high temperature is December (35.2°F).
- Average low temperature in September: 47.7°F
The month with the highest average low temperature is August (52.3°F).
The coldest month (with the lowest average low temperature) is December (26.1°F).
Average pressure in September
Trout Lake, WA
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in September
Trout Lake, WA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is June (6.4mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).
Average humidity in September
Trout Lake, WA
- Average humidity in September: 65%
The months with the highest relative humidity are January, February and December (88%).
The months with the lowest relative humidity are July and August (58%).
Average rainfall in September
Trout Lake, WA
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is January (4.88").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in September
Trout Lake, WA
- Average rainfall days in September: 8.2 days
The month with the highest number of rainy days is March (19.4 days).
The month with the least rainy days is August (3.8 days).
Average snowfall in September
Trout Lake, WA
- Average snowfall in September: 0"
The month with the highest snowfall is January (6.22").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Trout Lake, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (6.5 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
Trout Lake, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Trout Lake, WA
- Average sunshine days in September: 20.4 days
The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is February (8.8 days).
Average UV index in September
Trout Lake, 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 and February (UV index 1).
Average cloud cover in September
Trout Lake, WA
- Average cloud cover in September: 27
The months with the most cloud cover are January and February (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in September
Trout Lake, WA
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (4mi).
Trout Lake, Washington, USA
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