Do certain weather conditions lead to more home runs?

Yes! Weather conditions can change the distance a batted ball travels by more than 20%. Home Run Forecast provides a simple way to see the if weather will help or hinder baseball flight during a game. The Home Run Forecast Index demonstrates a strong correlation with the number of HRs hit and runs scored in big league games. Check out our Premium Subscription for on-demand HRFI forecast data by team and for each game.

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Current Weather Conditions and HRF Index

The table below shows the Home Run Forecast Index (HRFI) value for each big league ballpark. The HRFI ranges from 1 to 10, with 10 indicating the most favorable weather conditions for ball fight and 1 indicating least favorable. Learn more about how we calculate this index here.

This data is updated hourly at the top of the hour. For ballparks with a retractable roof, the index is calculated for open roof conditions. Check local sources for roof status. For ballparks with a permanent roof, the index is calculated for indoor conditions.

Ballpark LocationSky CoverTemperature (°F)Home Run Forecast Index™
Kansas City, MOovercast clouds618
St. Louis, MOovercast clouds627
Chicago (NL), ILovercast clouds586
Houston, TXlight rain625
Miami, FLovercast clouds765
Anaheim, CAclear sky554
Phoenix, AZovercast clouds684
Arlington, TXmoderate rain573
Chicago (AL), ILovercast clouds583
Denver, COclear sky583
Los Angeles, CAclear sky543
Milwaukee, WIovercast clouds583
Minneapolis, MNclear sky553
Sacramento, CAmoderate rain533
San Diego, CAclear sky563
San Francisco, CAovercast clouds533
Seattle, WAovercast clouds523
Tampa Bay, FLclear sky733
Atlanta, GAclear sky601
Baltimore, MDclear sky491
Boston, MAclear sky431
Bronx, NYclear sky431
Cincinnati, OHfew clouds561
Cleveland, OHscattered clouds481
Detroit, MIovercast clouds481
Philadelphia, PAclear sky471
Pittsburgh, PAfew clouds481
Queens, NYclear sky431
Tampa, FLclear sky731
Toronto, ONovercast clouds411
Washington, DCclear sky501
Data last updated: 1776779771
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