These charts are based on weather information for the last 5 years. All values are averaged. You can also look at the information for each month for the last 5 years and see how the weather in this region has changed — Seattle on the map, United States. Find out in which months it is best to relax when the season begins and when it ends.
The average maximum daily temperature — 25.7°C in August. Average maximum night temperature — 16°C in August.
The average minimum daily temperature — 6.3°C December. The average minimum night temperature — 3.4°C December.