Lake Oswego weather in September (Oregon, United States of America)

Is September a good time to explore Lake Oswego weather-wise? Explore our page to find a thorough overview of this month's weather conditions.

Temperatures

For September, the weather in Lake Oswego is generally perfect, featuring high temperatures and moderate rainfall. September is a notable month of the summer season. During the day, temperatures usually reach up to 25°C. At night, they tend to fall to approximately 11°C.

Precipitation

Lake Oswego in September usually receives moderate rainfall, averaging around 43 mm for the month. Records from the past 30 years suggest that around 9 days will experience rain.

Average sunshine

The city usually sees around 236 hours of sunlight, indicating many sunny days.

If you're inclined towards comfortable temperatures and drier conditions, September is a prime time to visit Lake Oswego. May, June, July, August and September typically offer the best circumstances. While January, March, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Lake Oswego climate page with graphs.

 

Lake Oswego, monthly averages in September

Min Temperature 11°C  

Max Temperature 25°C  

Chance of Rain 30%  

Precipitation 43 mm  

Rainy days 9 days  

Humidity 69% *  

Windspeed 7 km/h *  

Sunshine 236 hours *  

Percentage Sunshine *  

Data from: Portland, the United States of America (20 KM, 12 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 Lake Oswego, 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

10/10

Outdoor sports

10/10

Interested in more climate information?

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

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.