The average custodial salary at Winona Isd was $22,389 , which is 15 percent lower than the average salary for this job in Texas, and 32 percent lower than the national average for this job . Custodial salaries at Winona Isd typically range from $19,170 to $23,612 (25th to 75th percentile). The highest reported custodial salary was $37,142. There are 14 employees at Winona Isd with the job title custodial.