Forest Grove weather in September (Oregon, United States of America)

How's the weather trend in Forest Grove as September approaches? Want to know if it's a good time to visit? This page has all the weather details for the month.

Temperatures

Expect perfect weather in Forest Grove during September, which means high temperatures and moderate rainfall. September marks the summer season. As the day progresses, temperatures can peak at 25°C. Luckily at nightfall, they typically drop to 10°C.

Precipitation

Forest Grove in September usually receives moderate rainfall, averaging around 35 mm for the month. Based on our climate data of the past 30 years, about 8 days of rain are anticipated.

Average sunshine

With around 236 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

So this is a great month to visit if you prefer dry days with pleasant temperatures. May, June, July, August and September typically offer the most optimal weather. In contrast, January, February, March, November and December tend to have less optimal conditions.

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

 

Forest Grove, monthly averages in September

Min Temperature 10°C  

Max Temperature 25°C  

Chance of Rain 27%  

Precipitation 35 mm  

Rainy days 8 days  

Humidity 69% *  

Sunshine 236 hours *  

Percentage Sunshine *  

Data from: Portland, the United States of America (40 KM, 25 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 Forest Grove, 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 Forest Grove.

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.