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 shows a mild decline in the average high-temperature, falling from August's moderately hot 80.2°F (26.8°C) to a pleasant 69.1°F (20.6°C). Cusick records a marked daily temperature contrast, with an average low-temperature of 43°F (6.1°C) during the nights of September.Humidity
The average relative humidity in September is 61%.Rainfall
In September, the rain falls for 9 days. Throughout September, 1.02" (26mm) of precipitation is accumulated. Throughout the year, there are 130.2 rainfall days, and 24.17" (614mm) of precipitation is accumulated.Snowfall
Months with snowfall in Cusick are January through June, September through December. September is the first month it typically snows in Cusick. Throughout September, in the average 0.6 snowfall days, it receives 0.47" (12mm) of snow. In Cusick, during the entire year, snow falls for 122.5 days and aggregates up to 103.78" (2636mm) of snow.Daylight
The average length of the day in September is 12h and 34min.On the first day of September in Cusick, sunrise is at 6:07 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:29 pm PDT.
Sunshine
In Cusick, the average sunshine in September is 9.9h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A typical high UV index of 3 in September suggests the following recommendations:
Exercise prevention - Warding off sunburn is urged. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Cusick in September?
What is the average humidity in September in Cusick?
How many days does it rain in September in Cusick?
When does it start to snow in Cusick?
What is the average length of the day in September in Cusick?
When are sunrise and sunset in September in Cusick?
How many hours of sunshine does Cusick have in September?
What is the UV index intensity in September in Cusick?
Average temperature in September
Cusick, WA
- Average high temperature in September: 69.1°F
The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (28.8°F).
- Average low temperature in September: 43°F
The month with the highest average low temperature is August (50.2°F).
The coldest months (with the lowest average low temperature) are February and December (18°F).
Average pressure in September
Cusick, 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
Cusick, WA
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is April (4.4mph).
The calmest month (with the lowest average wind speed) is December (3.3mph).
Average humidity in September
Cusick, WA
- Average humidity in September: 61%
The month with the highest relative humidity is January (95%).
The month with the lowest relative humidity is August (51%).
Average rainfall in September
Cusick, WA
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is January (2.99").
The driest month (with the least rainfall) is August (0.51").
Average rainfall days in September
Cusick, WA
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is April (17.2 days).
The months with the least rainy days are February and August (6.8 days).
Average snowfall in September
Cusick, WA
- Average snowfall in September: 0.47"
The month with the highest snowfall is January (23.39").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Cusick, WA
- Average snowfall days in September: 0.6 days
The month with the highest number of snowfall days is December (21.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Cusick, 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: 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 12min).
Average sunshine days in September
Cusick, WA
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is August (21.9 days).
The months with the least sunshine days are February, March and April (7.8 days).
Average UV index in September
Cusick, 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 February, November and December (UV index 1).
Average cloud cover in September
Cusick, WA
- Average cloud cover in September: 24
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in September
Cusick, 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).
Cusick, Washington, USA
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