September weather forecastVenner, WA
September
Weather in September
The first month of the autumn, September, is still a warm month in Venner, Washington, with an average temperature varying between 54.1°F (12.3°C) and 75.9°F (24.4°C).Temperature
With September's arrival, Venner's weather changes as the average high-temperature falls from a tropical 86.7°F (30.4°C) in August to a moderately hot 75.9°F (24.4°C). Venner's temperature in September declines substantially from daytime highs, settling at a consistent average of 54.1°F (12.3°C) during the nights.Humidity
In September, the average relative humidity is 46%.Rainfall
In Venner, in September, it is raining for 3.9 days, with typically 0.24" (6mm) of accumulated precipitation. Throughout the year, there are 78.5 rainfall days, and 5.16" (131mm) of precipitation is accumulated.Snowfall
January through March, September, November and December are months with snowfall. 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, there are 12.8 snowfall days, and 5.35" (136mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:43 pm PDT.
Sunshine
In Venner, the average sunshine in September is 11.2h.UV index
In Venner, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Venner, WA
- Average high temperature in September: 75.9°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is December (37°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is August (61.2°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in September
Venner, WA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in September
Venner, WA
- Average wind speed in September: 6.1mph
The windiest months (with the highest average wind speed) are April and June (7.1mph).
The calmest month (with the lowest average wind speed) is December (4.6mph).
Average humidity in September
Venner, WA
- Average humidity in September: 46%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (38%).
Average rainfall in September
Venner, WA
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is January (0.83").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in September
Venner, WA
- Average rainfall days in September: 3.9 days
The month with the highest number of rainy days is March (9.8 days).
The month with the least rainy days is July (2.1 days).
Average snowfall in September
Venner, WA
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in September
Venner, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (3.9 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Venner, 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: 11h and 12min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Venner, WA
- Average sunshine days in September: 23.5 days
The month with the most sunshine days is July (27.3 days).
The month with the least sunshine days is February (17.9 days).
Average UV index in September
Venner, 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, November and December (UV index 2).
Average cloud cover in September
Venner, WA
- Average cloud cover in September: 14
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in September
Venner, WA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
