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™
Miami, FLscattered clouds748
Kansas City, MObroken clouds686
Arlington, TXclear sky654
Houston, TXclear sky674
Phoenix, AZclear sky654
St. Louis, MOclear sky614
Tampa, FLclear sky674
Sacramento, CAovercast clouds523
Anaheim, CAovercast clouds563
Atlanta, GAclear sky573
Baltimore, MDbroken clouds553
Bronx, NYclear sky563
Denver, COclear sky533
Los Angeles, CAclear sky543
Philadelphia, PAbroken clouds563
Pittsburgh, PAbroken clouds523
Queens, NYscattered clouds573
San Diego, CAbroken clouds573
San Francisco, CAovercast clouds553
Washington, DCscattered clouds553
Chicago (AL), ILovercast clouds562
Chicago (NL), ILovercast clouds562
Cincinnati, OHclear sky532
Cleveland, OHbroken clouds562
Detroit, MIovercast clouds532
Milwaukee, WIovercast clouds522
Boston, MAovercast clouds511
Minneapolis, MNovercast clouds471
Seattle, WAclear sky411
Toronto, ONbroken clouds511
Data last updated: 1760529368
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