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, MOclear sky698
Los Angeles, CAclear sky818
St. Louis, MOclear sky678
Tampa, FLlight rain768
Anaheim, CAscattered clouds837
Houston, TXclear sky817
Phoenix, AZscattered clouds817
Atlanta, GAbroken clouds606
San Diego, CAclear sky836
Arlington, TXclear sky775
Sacramento, CAclear sky644
Chicago (NL), ILscattered clouds554
Miami, FLscattered clouds824
San Francisco, CAovercast clouds684
Baltimore, MDfew clouds523
Chicago (AL), ILscattered clouds553
Cincinnati, OHfew clouds583
Cleveland, OHbroken clouds533
Denver, COfew clouds633
Milwaukee, WIclear sky553
Pittsburgh, PAfew clouds523
Washington, DCfew clouds543
Boston, MAclear sky391
Bronx, NYclear sky411
Detroit, MIclear sky471
Minneapolis, MNclear sky471
Philadelphia, PAscattered clouds481
Queens, NYbroken clouds401
Seattle, WAovercast clouds481
Toronto, ONbroken clouds381
Data last updated: 1772214967
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