Kirkland Weather in September

Thinking of visiting Kirkland in September? Expect pleasant temperatures reaching 21°C (70°F) during the day, dropping to 11°C (52°F) at night, with some rainfall likely.

Rainfall in Kirkland in September

Typically, about 11 days will experience rainfall, with an average of 57 mm (2.2 in) 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 Kirkland in September

The perfect temperature in Kirkland in September makes it a solid month to visit, with 21°C (70°F) during the day and 11°C (52°F) at night. During September, the summer season is in full swing. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 11°C (52°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 Kirkland in September

The days are predominantly sunny, with an estimated total of around 220 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

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

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Check the conditions for any month of the year.

• January
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• May
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• October
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• December

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

Kirkland Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 21°C (70°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 (27 KM, 17 Miles).

What to Wear in Kirkland in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Kirkland 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 Kirkland's climate page.

More climate data for Kirkland

Temperature Rainfall Sunshine Humidity

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