Row 29 is the last row of seating in Section 134, and does have some coverage provided by the overhanging second seating tier above. However as the overhang is significantly higher up compared to the seating level, there may be a chance of rain making it to the seats if the wind is blowing to the south.
For some of the best protection from the elements, we recommend the Left Field Porch sections (LP1-LP3) as they have the most complete coverage and protection among the outdoor seats at Busch Stadium.

Left Field Porch Seats at Busch Stadium
Left Field Porch Sections (LP1-LP3) have some of the best overhead coverage at Busch Stadium