September weather forecastPitt, WA
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Pitt, Washington, with temperature in the range of an average high of 69.1°F (20.6°C) and an average low of 47.7°F (8.7°C).Temperature
In September, the average high-temperature goes from a warm 78.6°F (25.9°C) in August to an agreeable 69.1°F (20.6°C). During the nights in September, an average low-temperature of 47.7°F (8.7°C) is observed.Humidity
In September, the average relative humidity is 65%.Rainfall
In September, the rain falls for 8.2 days. Throughout September, 0.91" (23mm) of precipitation is accumulated. In Pitt, during the entire year, the rain falls for 152.5 days and collects up to 26.93" (684mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:42 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:46 pm PDT.
Sunshine
In Pitt, the average sunshine in September is 10.2h.UV index
The average daily maximum UV index in September in Pitt is 3. 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 UV index of 3 in September translates into the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Pitt, WA
- Average high temperature in September: 69.1°F
The warmest month (with the highest average high temperature) is August (78.6°F).
The month with the lowest average high temperature is December (35.2°F).
- Average low temperature in September: 47.7°F
The month with the highest average low temperature is August (52.3°F).
The coldest month (with the lowest average low temperature) is December (26.1°F).
Average pressure in September
Pitt, WA
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in September
Pitt, WA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is June (6.4mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).
Average humidity in September
Pitt, WA
- Average humidity in September: 65%
The months with the highest relative humidity are January, February and December (88%).
The months with the lowest relative humidity are July and August (58%).
Average rainfall in September
Pitt, WA
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is January (4.88").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in September
Pitt, WA
- Average rainfall days in September: 8.2 days
The month with the highest number of rainy days is March (19.4 days).
The month with the least rainy days is August (3.8 days).
Average snowfall in September
Pitt, WA
- Average snowfall in September: 0"
The month with the highest snowfall is January (6.22").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Pitt, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (6.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Pitt, 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 12min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Pitt, WA
- Average sunshine days in September: 20.4 days
The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is February (8.8 days).
Average UV index in September
Pitt, 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
Pitt, WA
- Average cloud cover in September: 27
The months with the most cloud cover are January and February (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in September
Pitt, WA
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (4mi).
