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 sky678
Phoenix, AZovercast clouds808
St. Louis, MOscattered clouds698
Anaheim, CAclear sky637
Denver, CObroken clouds707
Arlington, TXovercast clouds605
Chicago (AL), ILscattered clouds635
Chicago (NL), ILscattered clouds635
Cleveland, OHlight rain635
Los Angeles, CAscattered clouds615
San Francisco, CAclear sky545
Cincinnati, OHscattered clouds654
Detroit, MIovercast clouds614
Houston, TXovercast clouds644
Milwaukee, WIbroken clouds624
Pittsburgh, PAovercast clouds594
Sacramento, CAovercast clouds534
Baltimore, MDovercast clouds523
Minneapolis, MNscattered clouds603
San Diego, CAscattered clouds643
Seattle, WAovercast clouds563
Tampa Bay, FLclear sky683
Washington, DCovercast clouds523
Atlanta, GAovercast clouds611
Boston, MAfew clouds401
Bronx, NYovercast clouds461
Miami, FLclear sky691
Philadelphia, PAovercast clouds501
Queens, NYovercast clouds451
Tampa, FLclear sky671
Toronto, ONbroken clouds511
Data last updated: 1776826569
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