The average aide salary at Chehalis was $19,524 , which is 41 percent lower than the average salary for this job in Washington, and 40 percent lower than the national average for this job . Aide salaries at Chehalis typically range from $13,605 to $22,614 (25th to 75th percentile). The highest reported aide salary was $63,767. There are 117 employees at Chehalis with the job title aide.