MLB Ballpark and Weather Factors

By Steve Makinen  () 

With baseball being played outdoors at most locales all over the country and the MLB season spanning over seven months, naturally weather can have a big impact on teams’ seasons, and more specifically on a game-by-game basis. As bettors, factoring in the weather in the handicapping routine can be a tricky matter. Not only do you have to have a reliable source for the forecasts and such, but you also have to know how certain weather situations affect the various teams. Naturally, all of the league’s 30 home stadiums have their own unique intricacies, and adding changing weather into the mix only complicates the process further.

We all know that it can get pretty hot in places like Texas or Atlanta in mid-summer, and very cold in Minnesota or Cleveland in the early- and late-season action. But how does that specific weather change the way we should be handicapping those games? Is the wind in Wrigley Field as big of a deal as oddsmakers tend to make it? Does the roof being opened or closed at the various retractable roof stadiums really matter that much? Well, I’m hoping to give you answers on all of that as I unveil a rather lengthy report I put together for this week’s Point Spread Weekly quantifying various ballpark and weather factors throughout baseball.

Before digging into each team’s specific data, giving some background on the study, I have analyzed the home game logs for every game since the start of the 2017 seasons and calculated won-lost & over-under records for the home teams in a variety of weather situations, including temperature, wind, and time of day. I have decided to share ALL of the data with VSiN readers so that not only can they utilize my interpretations, but they can also form their own. The numbers should be fairly straightforward, but note that in any statistic where it uses the abbreviation “Cmb”, this is the combined stat for the two teams in games, providing an indication of how the condition affects both teams.

Thank you for reading and I hope this greatly helps your baseball handicapping moving forward. By the way, if you’re wondering, you can retrieve this weather information before every game on

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