The National Weather Service says a high pressure system over the Northwest is blocking Pacific frontal systems that typically keep Western Washington wet from the fall through the spring.
Since July 23, Sea-Tac Airport has recorded only .03 of rain. With no rain in the forecast, the city will set a record of 76 days for the driest stretch since they started keeping records in 1891. The previous record was a 75-day stretch of .03 or less, set in 1922.
The Puget Sound summer also has featured several days of warm temperatures, including five days that hit 90 degrees or higher, further drying out the region.
Forecasters say the next best chance of rain may be Thursday night or next Friday. Until then, the forecast calls for mostly clear skies and high temperatures in the 60s.