Blessing for good weather prayed this morning

The only prayer for good weather and protection from bad that we had ever heard of was to St. Medard (5th cent.), patron of weather:

A Prayer for Good Weather

Good Saint Medard, humble and loyal servant, you trusted God's providence in all things and at all times. You knew that God provides for the needs of His children. Inspire us with your faith, so that we may weather the storms that surround us and trust that the sun will shine again. Amen.

Pious tradition says that when he was a child, Medard was once sheltered from the rain by a hovering eagle. This is his most common depiction in art, and led to his patronage of good weather, against bad weather, for people who work the fields, etc. Legend has it that if it rains on his feast day, the next 40 days will be wet; if the weather is good, the next 40 will be fine as well. He was also depicted as laughing aloud with his mouth wide open; this led to his patronage against toothache. His feast is June 8th.

But today after 8 a.m. Mass, we prayed the "Holy Cross Weather Blessing". According to the OSP bulletin this prayer is said from May 3rd through September 14th, using a relic of the True Cross of Our Lord Jesus which asked God's protection against violent storms. The bulletin went on to say that it is prayed customarily after Low Masses during this seasonal period.

The prayer partially read:

We beseech Thee, O Almighty God, through the intercession of Holy Mary, the Mother of God, of the holy angels, patriarchs, prophets, apostles, martyrs, confessors, virgins, widows, and of all They saints that Thou show us Thy continuing protection, permit tranquil winds, and also pour out to us, They unworthy servant, Thy safety from heaven above against lightning strikes and violent storms, and that Thou remain always protective of the human race and crush down the aerial powers by the right hand of Thy power. Through the same Christ the Lord....