September weather forecastPaterson, WA
September
Weather in September
September, the first month of the autumn in Paterson, is also a moderately hot month, with an average temperature varying between 57.4°F (14.1°C) and 76.3°F (24.6°C).Temperature
September comes with a drop in the average high-temperature, falling from August's tropical 87.1°F (30.6°C) to a moderately hot 76.3°F (24.6°C). Paterson experiences an average low-temperature reading of 57.4°F (14.1°C) throughout September.Humidity
In September, the average relative humidity is 44%.Rainfall
In Paterson, in September, during 5 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. Throughout the year, in Paterson, there are 102.3 rainfall days, and 7.09" (180mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, September, November and December. September is the first month it typically snows in Paterson, Washington. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Paterson, during the entire year, snow falls for 10 days and aggregates up to 5.28" (134mm) of snow.Daylight
In September, the average length of the day in Paterson is 12h and 31min.On the first day of September, sunrise is at 6:20 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:39 pm PDT.
Sunshine
In September, the average sunshine in Paterson is 10.8h.UV index
In September, the average daily maximum UV index in Paterson, Washington, is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. To protect against the Sun's most potent rays, avoid direct exposure around midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Paterson, WA
- Average high temperature in September: 76.3°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is December (38.7°F).
- Average low temperature in September: 57.4°F
The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is December (29.1°F).
Average pressure in September
Paterson, WA
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in September
Paterson, WA
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is December (6.3mph).
Average humidity in September
Paterson, WA
- Average humidity in September: 44%
The month with the highest relative humidity is January (80%).
The months with the lowest relative humidity are July and August (37%).
Average rainfall in September
Paterson, WA
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is January (0.98").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in September
Paterson, WA
- Average rainfall days in September: 5 days
The month with the highest number of rainy days is March (12.7 days).
The month with the least rainy days is July (3.8 days).
Average snowfall in September
Paterson, WA
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (2.05").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in September
Paterson, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (3.3 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
Paterson, 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: 5h and 30min).
Average sunshine days in September
Paterson, WA
- Average sunshine days in September: 22.8 days
The month with the most sunshine days is July (25.6 days).
The month with the least sunshine days is February (14.7 days).
Average UV index in September
Paterson, 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
Paterson, WA
- Average cloud cover in September: 16
The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in September
Paterson, WA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
