Team Weather Playbook

Arizona Diamondbacks Weather Playbook: Chase Field Roof, Phoenix Heat

By Kevin Roth, sports meteorologist. How weather affects the Arizona Diamondbacks at home and on the road.

Home advantage

Chase Field closes the roof for the vast majority of home games May through September because of Phoenix heat. Closed conditions produce 72-degree indoor baseball with no wind. Open roof on cooler April, October, and shoulder-month evenings can produce extreme carry from the combination of warm dry air and low humidity.

Division road environments

NL West gives the D-backs Coors altitude, Dodger Stadium onshore, Petco marine, and Oracle Park bay wind. Coors is the largest single environmental variance in the division; Oracle cold-marine is the opposite extreme from Chase Field closed roof.

For DFS and bettors

Assume closed roof for any Phoenix high above 100. Open roof on a hot dry night is the extreme-carry setup. Dry desert air with warm temperatures can push carry beyond humid-park baselines.