BOSTON — Supreme Judicial Court Justice Francis X. Spina on Friday became the second justice in days to announce his retirement from the state’s highest court. Spina said he will leave the court in August, three months before he reaches 70, the state’s mandatory retirement age for judges.

On Wednesday, Justice Robert Cordy announced his retirement, also in August. Their departures will give Republican Gov. Charlie Baker the opportunity to make his first nominations to the seven-member high court.