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™
St. Louis, MOclear sky598
Kansas City, MOclear sky637
Arlington, TXclear sky666
Sacramento, CAclear sky635
Anaheim, CAclear sky625
Chicago (NL), ILfew clouds565
Houston, TXfew clouds665
Phoenix, AZclear sky785
Los Angeles, CAclear sky624
San Diego, CAbroken clouds624
San Francisco, CAovercast clouds624
Bronx, NYclear sky523
Chicago (AL), ILfew clouds563
Cincinnati, OHscattered clouds523
Denver, COclear sky593
Milwaukee, WIovercast clouds553
Queens, NYclear sky533
Seattle, WAlight rain513
Atlanta, GAclear sky542
Miami, FLovercast clouds762
Tampa, FLclear sky662
Baltimore, MDfew clouds491
Boston, MAclear sky451
Cleveland, OHbroken clouds471
Detroit, MIbroken clouds501
Minneapolis, MNclear sky481
Philadelphia, PAclear sky501
Pittsburgh, PAscattered clouds441
Toronto, ONbroken clouds461
Washington, DCclear sky491
Data last updated: 1762311367
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