Most of the measurable precipitation in Seattle comes in the form of drizzle and light rain with measurable amounts occurring on 150 days. The frequency is largely due to weather fronts having difficulty passing the Cascade Mountain range causing cloudy conditions for a few days. On average, Seattle only gets 37 inches of rain over 165 days while 40 miles south in Olympia, there is more than 50 inches of rain received in the same span!
- Houston gets 54" in 99 days
- Atlanta gets 50" in 116
- New York City gets nearly 50" in 120
- Chicago is real close with 38" on 125
The weather does change depending on your location. The Washington State Peninsula has a lot of variation. For example, it has temperate rainforest on the west (coast) side. There was a reason Forks was chosen as the setting of the Twilight Saga due to its high amount of rain and clouds. On the east side of the Olympic Mountains on the peninsula, it is much drier.