Seattle Parks & Recreation has a posted schedule for use of wading pools and spray parks. The season starts NOW — check the recording message in the morning. Pools open when daytime temperature is predicted to reach 70 degrees.

Northacres Spray Park
Seattle Parks has an info page and a recorded message which is updated each morning, to let you know what wading pools and spray parks will be open according to weather conditions. The season begins on May 28th!
Use of these parks actually saves water over home use! Come on out to the parks and keep cool.