Weather plays an enormous factor in baseball. From the Wrigley winds to the marine layer out west. Chilly northeast weather takes the sting out of the baseball, but humid summers can make the ball fly. Oh, and that Coors Field is an ominous place for pitchers due to the thin high altitude air. Whether you are just a casual MLB fan, or diving into fantasy baseball research, it might play more of a factor than you realize.
Temperatures often dictate how a ball can travel. Colder weather can drop offensive abilities down quite a bit. Over the last few seasons, games played at cooler temperatures have led to a drop of nearly .5 runs per game, while warmer temperatures can increase runs by that much. A ball hit in Minnesota during April travels much different from in July. A ten-degree change in temperature can alter a flyball by a few feet. Air density also plays a factor, and we can look at Coors Field as the extreme. Given Colorado is a mile high above sea level, the air density is lower. Hitters get a bump, but pitchers do not have the same spin rates on some of their pitches in Coors.
The obvious key condition for weather is the wind. Wrigley has been historically known for 15-25 mph winds blowing in and out. Vegas usually will wait until they get a grasp on the weather before putting out a total. When the wind is blowing out, you will see 10, 11, and even 12 run totals. If the wind is blowing in, totals will drop down to 6 or 7. The wind can give a pitcher a big advantage, or a disadvantage if those flyballs hang up in the air too long on a windy day.
If you are heading out to the ballpark, building fantasy lineups, or just love weather — this is the page to keep an eye on throughout the season.