Kirkland Weather in September

What's the weather like in Kirkland (Washington) in September 2024?

The climate in Kirkland during September can be summarized as mild and reasonably dry.

September is in the fall / autumn in Kirkland and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 20°C (69°F), whilst at night 11°C (51°F) is normal.

Kirkland weather averages (imperial / metric)
Daytime temperature 20.3°C 68.5°F
Nightly temperature 10.7°C 51.3°F
Average temperature 15.5°C 59.9°F
Daily sunshine 7.8 hrs
Avg rainfall 51 mm 2 ins
Rainy days 9 days
Sea temperature 12.8°C 55.1°F
Humidity 74%
Windspeed 11.5kph 7 mph

On average September is the 4th driest month of the year in Kirkland with around 51mm 2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.8 hours of sunshine per day.

September temperatures in Kirkland

Kirkland average temperature in September

September rainfall

Kirkland average rain in September

September hourly sunshine

Kirkland average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Kirkland in September 2024.