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, CAclear sky675
Anaheim, CAclear sky635
Los Angeles, CAclear sky635
Phoenix, AZclear sky775
San Francisco, CAfew clouds625
Miami, FLmoderate rain754
Minneapolis, MNovercast clouds524
San Diego, CAscattered clouds634
Denver, COclear sky603
Tampa, FLfew clouds663
Arlington, TXclear sky592
Baltimore, MDclear sky512
Bronx, NYclear sky542
Houston, TXovercast clouds632
Queens, NYbroken clouds542
Atlanta, GAscattered clouds471
Boston, MAbroken clouds391
Chicago (AL), ILfew clouds481
Chicago (NL), ILfew clouds481
Cincinnati, OHovercast clouds471
Cleveland, OHclear sky441
Detroit, MIfew clouds461
Kansas City, MOclear sky501
Milwaukee, WIbroken clouds461
Philadelphia, PAfew clouds501
Pittsburgh, PAbroken clouds511
Seattle, WAscattered clouds481
St. Louis, MOclear sky441
Toronto, ONclear sky471
Washington, DCovercast clouds521
Data last updated: 1762138567
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