Kelso weather in September (Washington State, United States of America)

What weather conditions can you expect in Kelso this September? Find all the essential weather information for this month in our guide.

Temperatures

The weather in Kelso is usually perfect in September, characterized by high temperatures and moderate rainfall. September marks the summer season. In the daytime, temperatures tend to hover near 23°C, cooling down at night to around 10°C.

Precipitation

Kelso in September usually receives moderate rainfall, averaging around 52 mm for the month. Based on our climate data of the past 30 years, about 10 days of rain are anticipated.

Average sunshine

Expect a lot of sunshine this month, with about 236 hours of sunny weather. The abundant sunlight creates a lively and bright atmosphere.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit. June, July, August and September generally stand out with 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 Kelso climate page with graphs.

 

Kelso, monthly averages in September

Min Temperature 10°C  

Max Temperature 23°C  

Chance of Rain 33%  

Precipitation 52 mm  

Rainy days 10 days  

Humidity 69% *  

Sunshine 236 hours *  

Percentage Sunshine *  

Data from: Portland, the United States of America (64 KM, 40 Miles).

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.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Kelso, 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.

Swimming

10/10

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

8/10

Outdoor sports

10/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Kelso.

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.