September weather forecastWahkiacus, WA
September
Weather in September
September, the first month of the autumn in Wahkiacus, is still a pleasant month, with temperature in the range of an average low of 50.7°F (10.4°C) and an average high of 71.4°F (21.9°C).Temperature
The move into September indicates a reduction in the average high-temperature, down from August's warm 81.9°F (27.7°C) to an agreeable 71.4°F (21.9°C). In the month of September, Wahkiacus experiences an average low-temperature of 50.7°F (10.4°C).Humidity
In September, the average relative humidity is 55%.Rainfall
In Wahkiacus, in September, it is raining for 6.6 days, with typically 0.43" (11mm) of accumulated precipitation. Throughout the year, there are 114.1 rainfall days, and 12.13" (308mm) of precipitation is accumulated.Snowfall
January through April, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.16" (4mm) of snow. In Wahkiacus, during the entire year, snow falls for 33.8 days and aggregates up to 19.69" (500mm) of snow.Daylight
The average length of the day in September in Wahkiacus is 12h and 31min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:45 pm PDT.
Sunshine
In September, the average sunshine is 10.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Undertake precautions - Guarding against sun damage is counselled. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Wahkiacus, WA
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is December (36°F).
- Average low temperature in September: 50.7°F
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in September
Wahkiacus, WA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.95"Hg).
Average wind speed in September
Wahkiacus, WA
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is June (7.9mph).
The calmest months (with the lowest average wind speed) are January and December (5.3mph).
Average humidity in September
Wahkiacus, WA
- Average humidity in September: 55%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (47%).
Average rainfall in September
Wahkiacus, WA
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is January (2.17").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in September
Wahkiacus, WA
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is March (13.8 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in September
Wahkiacus, WA
- Average snowfall in September: 0.16"
The month with the highest snowfall is January (6.18").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in September
Wahkiacus, WA
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (8.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Wahkiacus, WA
- Average daylight in September: 12h and 30min
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 48min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in September
Wahkiacus, WA
- Average sunshine days in September: 21.3 days
The month with the most sunshine days is July (26.3 days).
The month with the least sunshine days is February (12.3 days).
Average UV index in September
Wahkiacus, 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 2).
Average cloud cover in September
Wahkiacus, WA
- Average cloud cover in September: 18
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in September
Wahkiacus, 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).
