Mount Vernon weather in September (Washington State, United States of America)
What does the weather outlook for Mount Vernon look like in September? Want to know if it's a good time to visit? This page has all the weather details for the month.
Temperatures
The weather in Mount Vernon is usually perfect in September, featuring pleasant temperatures and moderate rainfall. September ushers in the summer season. During the day, temperatures usually reach up to 20°C. At night, they tend to fall to approximately 10°C.
Precipitation
Mount Vernon in September usually receives moderate rainfall, averaging around 63 mm for the month. Typically around 12 days days of rainfall are expected.Average sunshine
The area enjoys a moderate level of sunlight, with around 188 hours. It's a good balance between sunny and cloudy days.If you favor pleasant temperatures and minimal rainfall, September is one of the better months to visit Mount Vernon. June, July, August and September typically offer the most agreeable circumstances. On the other hand, January, February, March, November and December tend to be characterized by conditions that may not be as optimal.
For an in-depth look at the yearly conditions, visit our specialized Mount Vernon climate page with graphs.
Mount Vernon, monthly averages in September
Min Temperature
10°C
Max Temperature
20°C
Chance of Rain
40%
Precipitation
63 mm
Rainy days
12 days
Sunshine
188 hours *
Percentage Sunshine
*
Where to go in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in this month?
For visitors traveling to Mount Vernon, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Interested in more climate information?
This site provides you with all the information you need about the climate in Mount Vernon.
Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.
