Cascade Locks Weather in September

Cascade Locks in September sees high daytime temperatures of 22°C (72°F) and nighttime lows of 10°C (50°F). Rainfall is fairly high this month at around 70 mm (2.8 in), so pack a rain jacket to stay dry.

Rainfall in Cascade Locks in September

Historically, approximately 8 days this month are expected to have rain, averaging 70 mm (2.8 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Cascade Locks in September

If you're visiting Cascade Locks in September, expect perfect temperatures with highs of 22°C (72°F) and overnight lows of 10°C (50°F). September is part of summer. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 10°C (50°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Cascade Locks in September

The days are predominantly sunny, with an estimated total of around 236 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Cascade Locks.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Cascade Locks's climate page.

Cascade Locks Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 22°C (72°F)  

Chance of Rain 28%  

Precipitation 70 mm (2.8 in)  

Rainy days 8 days  

Humidity 69% *  

Sunshine 236 hours *  

Percentage Sunshine *  

* Data from: Portland, the United States of America (55 KM, 34 Miles).

What to Wear in Cascade Locks in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Cascade Locks in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Cascade Locks's climate page.

More climate data for Cascade Locks

Temperature Rainfall Sunshine Humidity

See the full Cascade Locks climate overview or explore weather in the United States of America.