Why Is Sequim So Dry?

Tools

By By Steve Pool

SEATTLE - Sequim is the driest spot in western Washington, getting just 18" of rain a year. And they can thank their proximity to the Olympic Mountains.

Most of our rainy weather around here comes from the southwest. The moist air will rise up the southwest side of the Olympics, then condense and squeeze out its moisture. (Think of the Olympics as a big sponge in this case.) That's why the Olympic rain forests get over 200" of rain a year.

On the flip side, once the air reaches the summit, all its moisture is gone. Plus, as it then goes down the northeast side of the Olympics, it sinks and dries out -- right over Sequim. That's known as the Olympic Rain Shadow.

For More Information:

KOMO Weather FAQ.

Your Photos

YouNews World Series pumpkin (New) World Series pumpkin
Every year the SF Giants are in the play offs it carve a pumpkin in their honer. This year I switched it up and added our opponents logo along with the World Series trophy. I hope to see my pumpkin on tv to share with all baseball fans.
YouNews AR2192 update AR2192 update
Sunspot AR2192 has grown to almost the size of Jupiter in this 2-day comparison. Image on the left was taken Sunday
Oct.19 and the image on the right was taken Tuesday Oct.21.