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™
Anaheim, CAclear sky688
Arlington, TXclear sky778
Houston, TXbroken clouds788
Phoenix, AZovercast clouds688
Tampa, FLclear sky758
Los Angeles, CAclear sky697
Sacramento, CAclear sky606
San Diego, CAscattered clouds666
Atlanta, GAfew clouds594
Miami, FLscattered clouds784
San Francisco, CAovercast clouds594
St. Louis, MOclear sky614
Chicago (AL), ILfew clouds523
Chicago (NL), ILfew clouds523
Denver, COovercast clouds563
Kansas City, MOclear sky653
Baltimore, MDclear sky371
Boston, MAfew clouds381
Bronx, NYclear sky371
Cincinnati, OHclear sky511
Cleveland, OHfew clouds381
Detroit, MIclear sky361
Milwaukee, WIclear sky491
Minneapolis, MNclear sky471
Philadelphia, PAclear sky361
Pittsburgh, PAscattered clouds371
Queens, NYfew clouds371
Seattle, WAovercast clouds481
Toronto, ONbroken clouds311
Washington, DCclear sky381
Data last updated: 1771012569
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