Castle Rock weather in September (Washington State, United States of America)
Looking to travel to Castle Rock in September? Check out this comprehensive weather guide.
In Castle Rock the weather in September is generally perfect, characterized by high temperatures and moderate rainfall. September falls within the summer season. Anticipate daytime temperatures around 23°C, while night temperatures can drop to 9°C.
Castle Rock in September usually receives moderate rainfall, averaging around 53 mm for the month. When we look at the climate data from the last 30 years, we can expect around 10 days of rain.
The days are predominantly sunny, with an estimated total of around 236 hours of sunshine. This amount of sunlight does not only brightens the days but also contributes to a cheerful ambiance in the area during this month.
If you're inclined towards comfortable temperatures and drier conditions, September is a prime time to visit Castle Rock. June, July, August and September typically offer the best circumstances. While January, February, March, November and December tend to showcase less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized Castle Rock climate page with graphs.
Castle Rock, monthly averages in September
Min Temperature
9°C
Max Temperature
23°C
Chance of Rain
32%
Precipitation
53 mm
Rainy days
10 days
Sunshine
236 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 in September and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in Castle Rock in September?
For visitors traveling to Castle Rock, 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 in September.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in Castle Rock.
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 climate conditions. Find out where to go with our weather planner.
