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
In Inchelium, the average high-temperature in September decreases from a warm 82.8°F (28.2°C) in August to an agreeable 70.7°F (21.5°C). Inchelium's average low-temperature of 44.6°F (7°C) in September reflects a significant disparity from the daytime highs.Humidity
In Inchelium, the average relative humidity in September is 56%.Rainfall
In Inchelium, Washington, during September, the rain falls for 4.9 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Inchelium, during the entire year, the rain falls for 86.5 days and collects up to 6.42" (163mm) of precipitation.Snowfall
January through April, September, November and December are months with snowfall in Inchelium. September is the first month it typically snows in Inchelium. Throughout September, in the average 0.2 snowfall days, it receives 0.51" (13mm) of snow. Throughout the year, in Inchelium, there are 24.6 snowfall days, and 6.38" (162mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 34min.On the first day of the month, sunrise is at 6:11 am and sunset at 7:33 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:33 pm PDT.
Sunshine
In September, the average sunshine in Inchelium is 10.4h.UV index
In Inchelium, Washington, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Exercise prevention - Warding off sunburn is urged. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Inchelium?
What is the average humidity in September in Inchelium?
How much does it rain in Inchelium in September?
When does it start to snow in Inchelium?
How many hours of daylight does Inchelium have in September?
When are sunrise and sunset in September in Inchelium?
How long on average sun shines in September in Inchelium?
What is the UV index reading in September in Inchelium?
Average temperature in September
Inchelium, WA
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is August (82.8°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in September: 44.6°F
The month with the highest average low temperature is August (52.3°F).
The coldest months (with the lowest average low temperature) are February and December (18.3°F).
Average pressure in September
Inchelium, WA
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in September
Inchelium, WA
- Average wind speed in September: 4mph
The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are January and December (3.4mph).
Average humidity in September
Inchelium, WA
- Average humidity in September: 56%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (47%).
Average rainfall in September
Inchelium, WA
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is May (1.06").
The driest month (with the least rainfall) is August (0.31").
Average rainfall days in September
Inchelium, WA
- Average rainfall days in September: 4.9 days
The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is September (4.9 days).
Average snowfall in September
Inchelium, WA
- Average snowfall in September: 0.51"
The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in September
Inchelium, WA
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (7.5 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Inchelium, 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: 10h and 2min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Inchelium, WA
- Average sunshine days in September: 23.8 days
The month with the most sunshine days is September (23.8 days).
The month with the least sunshine days is June (17.3 days).
Average UV index in September
Inchelium, WA
- Average UV index in September: 4
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
Inchelium, WA
- Average cloud cover in September: 21
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Inchelium, WA
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (2mi).
Inchelium, Washington, USA
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