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™
Baltimore, MDbroken clouds8610
Kansas City, MOovercast clouds8510
St. Louis, MOovercast clouds8710
Washington, DCbroken clouds8710
Anaheim, CAclear sky708
Arlington, TXovercast clouds778
Boston, MAbroken clouds788
Bronx, NYbroken clouds848
Chicago (AL), ILbroken clouds798
Chicago (NL), ILovercast clouds798
Cincinnati, OHbroken clouds838
Cleveland, OHovercast clouds778
Detroit, MIovercast clouds768
Houston, TXovercast clouds828
Los Angeles, CAclear sky698
Philadelphia, PAovercast clouds858
Pittsburgh, PAbroken clouds788
Queens, NYscattered clouds828
San Francisco, CAscattered clouds628
Atlanta, GAscattered clouds847
Sacramento, CAclear sky656
San Diego, CAclear sky696
Tampa, FLclear sky846
Toronto, ONovercast clouds726
Minneapolis, MNovercast clouds625
Denver, COovercast clouds594
Miami, FLovercast clouds804
Milwaukee, WIbroken clouds754
Phoenix, AZclear sky764
Tampa Bay, FLbroken clouds844
Seattle, WAmoderate rain492
Data last updated: 1776196569
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