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 introduces a moderate change in Wellpinit's weather, with average high-temperatures falling from August's warm 83.3°F (28.5°C) to a pleasant 72.5°F (22.5°C). In the month of September, the average temperature dips to a fresh 52.2°F (11.2°C) during the night.Humidity
In Wellpinit, the average relative humidity in September is 46%.Rainfall
In September, in Wellpinit, the rain falls for 7.6 days. Throughout September, 0.59" (15mm) of precipitation is accumulated. Throughout the year, there are 127.9 rainfall days, and 15.71" (399mm) of precipitation is accumulated.Snowfall
Months with snowfall in Wellpinit, Washington, are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Wellpinit, Washington, there are 65.1 snowfall days, and 37.36" (949mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 33min.On the first day of September in Wellpinit, sunrise is at 6:11 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:32 pm PDT.
Sunshine
The average sunshine in September is 10.4h.UV index
In Wellpinit, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Take precautions - Protection against sun damage is advised. Avoiding the Sun during its peak radiation time around midday is a healthy practice. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Wellpinit in September?
What is the average humidity in September in Wellpinit?
How many days does it rain in September in Wellpinit?
When does it start to snow in Wellpinit?
What is the average length of the day in September in Wellpinit?
When are sunrise and sunset in September in Wellpinit?
How long on average sun shines in September in Wellpinit?
How high is the UV index in September in Wellpinit?
Average temperature in September
Wellpinit, WA
- Average high temperature in September: 72.5°F
The warmest months (with the highest average high temperature) are July and August (83.3°F).
The month with the lowest average high temperature is December (31.5°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).
Average pressure in September
Wellpinit, WA
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in September
Wellpinit, WA
- Average wind speed in September: 6.9mph
The windiest months (with the highest average wind speed) are March and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Wellpinit, WA
- Average humidity in September: 46%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (37%).
Average rainfall in September
Wellpinit, WA
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is March (1.97").
The driest months (with the least rainfall) are July and August (0.31").
Average rainfall days in September
Wellpinit, WA
- Average rainfall days in September: 7.6 days
The month with the highest number of rainy days is March (16.3 days).
The month with the least rainy days is August (5.2 days).
Average snowfall in September
Wellpinit, WA
- Average snowfall in September: 0.04"
The month with the highest snowfall is January (10").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Wellpinit, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (15.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Wellpinit, 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 30min).
- Average sunshine in September: 10h and 2min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in September
Wellpinit, WA
- Average sunshine days in September: 20.9 days
The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is March (10.2 days).
Average UV index in September
Wellpinit, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Wellpinit, WA
- Average cloud cover in September: 19
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 12).
Average visibility in September
Wellpinit, WA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Wellpinit, Washington, USA
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