Bothell Weather in September

During September, Bothell experiences pleasant daytime temperatures of 22°C (72°F) and cooler nights around 11°C (52°F). As part of the summer season, some rainfall is to be expected.

Rainfall in Bothell in September

You can expect rain on around 11 days based on historical patterns, with 57 mm (2.2 in) average for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Bothell in September

The temperature in Bothell in September is perfect. Daytime highs reach 22°C (72°F), with nights dropping to 11°C (52°F). The month of September belongs to the summer season. Conditions are often most pleasant around the middle of the day. Nights drop to around 11°C (52°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Bothell in September

Enjoy a sunny month with about 220 hours of sunshine, the clear skies make Bothell even more beautiful.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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• January
• February
• March
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• May
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• 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 Bothell's climate page.

Bothell Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 22°C (72°F)  

Chance of Rain 37%  

Precipitation 57 mm (2.2 in)  

Rainy days 11 days  

Humidity 73% *  

Sunshine 220 hours *  

Percentage Sunshine 59% *  

* Data from: Seattle, the United States of America (35 KM, 21 Miles).

What to Wear in Bothell 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. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Bothell in September

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

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 Bothell's climate page.

More climate data for Bothell

Temperature Rainfall Sunshine Humidity

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