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™
Sacramento, CAovercast clouds636
Houston, TXbroken clouds736
Anaheim, CAclear sky635
Miami, FLbroken clouds805
Phoenix, AZclear sky765
San Francisco, CAbroken clouds615
Arlington, TXclear sky644
Los Angeles, CAclear sky624
Denver, COfew clouds563
Kansas City, MOovercast clouds563
San Diego, CAscattered clouds633
Tampa, FLclear sky733
Chicago (NL), ILovercast clouds522
Philadelphia, PAovercast clouds512
Seattle, WAmoderate rain482
St. Louis, MOovercast clouds542
Atlanta, GAclear sky581
Baltimore, MDscattered clouds501
Boston, MAovercast clouds471
Bronx, NYovercast clouds541
Chicago (AL), ILovercast clouds521
Cincinnati, OHovercast clouds501
Cleveland, OHfew clouds421
Detroit, MIclear sky441
Milwaukee, WIovercast clouds451
Minneapolis, MNscattered clouds481
Pittsburgh, PAfew clouds411
Queens, NYbroken clouds541
Toronto, ONclear sky431
Washington, DCclear sky501
Data last updated: 1761447367
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