Lynnwood (WA) Weather & Climate: Best Time to Visit

The climate in Lynnwood is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a comfortable 24°C (75°F) in August. In December, the coolest month of the year, temperatures drop to a chilly 7°C (45°F).

At night, temperatures range from around 13°C (55°F) in August to 2°C (36°F) in December.

Check out our detailed temperature page for more information.

Temperature ranges by month

Lynnwood has a notably wet climate with abundant precipitation, recording 1018 mm (40 in) of rain/snowfall per year. Lynnwood can be quite wet during November, receiving approximately 155 mm (6.1 in) of precipitation over 20 rainy days.

In contrast, during the driest month (July), you will experience much drier conditions, with 19 mm (0.7 in) of precipitation spread across 6 rainy days days. For more details, please visit our Lynnwood Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Lynnwood can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 10.4 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.8 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Lynnwood.

The city experiences its highest humidity in December, reaching 80%. In July, the humidity drops to its lowest level at 65%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year