Stevenson Weather in September

September in Stevenson typically sees daytime highs of 23°C (73°F) and nighttime lows of 10°C (50°F). Expect some rainfall during the month. It falls within the summer season.

Rainfall in Stevenson in September

This month experiences about 8 days of rain according to historical data, averaging 58 mm (2.3 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 Stevenson in September

The temperature in Stevenson in September is perfect. Daytime highs reach 23°C (73°F), with nights dropping to 10°C (50°F). During September, the summer season is in full swing. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 10°C (50°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Stevenson in September

There are approximately 236 hours of sunshine this month, resulting in mostly clear days.

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

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• 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 Stevenson's climate page.

Stevenson Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 23°C (73°F)  

Chance of Rain 27%  

Precipitation 58 mm (2.3 in)  

Rainy days 8 days  

Humidity 69% *  

Sunshine 236 hours *  

Percentage Sunshine *  

* Data from: Portland, the United States of America (56 KM, 35 Miles).

What to Wear in Stevenson in September

For Stevenson in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Stevenson in September

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

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 Stevenson's climate page.

More climate data for Stevenson

Temperature Rainfall Sunshine Humidity

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