September weather forecastPeshastin, WA
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Peshastin, Washington, with temperature in the range of an average high of 66.4°F (19.1°C) and an average low of 43.2°F (6.2°C).Temperature
With September's onset, the average high-temperature recedes from August's warm 77.5°F (25.3°C) to an enjoyable 66.4°F (19.1°C). A sharp divergence from daytime highs is noted during the month of September, with the average nighttime temperature settling at a chilly 43.2°F (6.2°C).Humidity
In September, the average relative humidity is 65%.Rainfall
In September, the rain falls for 10.3 days. Throughout September, 1.06" (27mm) of precipitation is accumulated. In Peshastin, during the entire year, the rain falls for 159.9 days and collects up to 25.63" (651mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.39" (10mm) of snow. Throughout the year, there are 73.4 snowfall days, and 57.99" (1473mm) of snow is accumulated.Daylight
In Peshastin, the average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:42 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:43 pm PDT.
Sunshine
The average sunshine in September is 10.5h.UV index
In Peshastin, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 3 translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. When the Sun is at its strongest around midday, find shade and limit exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Peshastin, WA
- Average high temperature in September: 66.4°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (30.6°F).
- Average low temperature in September: 43.2°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (18.7°F).
Average pressure in September
Peshastin, WA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.95"Hg).
Average wind speed in September
Peshastin, WA
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is December (3.5mph).
Average humidity in September
Peshastin, WA
- Average humidity in September: 65%
The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are July and August (56%).
Average rainfall in September
Peshastin, WA
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is January (4.33").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in September
Peshastin, WA
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is March (18.2 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in September
Peshastin, WA
- Average snowfall in September: 0.39"
The month with the highest snowfall is January (16.73").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Peshastin, WA
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (17 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Peshastin, WA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 10h and 30min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Peshastin, WA
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in September
Peshastin, 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 January and February (UV index 1).
Average cloud cover in September
Peshastin, WA
- Average cloud cover in September: 25
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Peshastin, WA
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
