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 clouds577
Houston, TXovercast clouds625
Arlington, TXlight rain564
Miami, FLovercast clouds714
St. Louis, MObroken clouds534
Anaheim, CAfew clouds543
Los Angeles, CAfew clouds523
Phoenix, AZovercast clouds673
Sacramento, CAmoderate rain543
San Diego, CAscattered clouds563
San Francisco, CAlight rain533
Seattle, WAbroken clouds523
Tampa Bay, FLscattered clouds622
Tampa, FLfew clouds622
Atlanta, GAclear sky571
Baltimore, MDclear sky411
Boston, MAfew clouds381
Bronx, NYclear sky381
Chicago (AL), ILbroken clouds491
Chicago (NL), ILbroken clouds491
Cincinnati, OHbroken clouds441
Cleveland, OHbroken clouds401
Denver, COclear sky491
Detroit, MIovercast clouds421
Milwaukee, WIovercast clouds491
Minneapolis, MNfew clouds431
Philadelphia, PAclear sky411
Pittsburgh, PAfew clouds401
Queens, NYclear sky381
Toronto, ONbroken clouds371
Washington, DCfew clouds411
Data last updated: 1776772570
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