Do certain weather conditions lead to more home runs?

Yes! Weather conditions change the distance a batted ball travels by more than 20%. Home Run Forecast provides a simple indication of how weather will help or hinder baseball flight during a game. The HRFI demonstrates a strong correlation with HRs hit and runs scored in big league games. Check out our Premium Subscription for on-demand forecast data by team and 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™
Atlanta, GAbroken clouds758
Tampa, FLfew clouds808
Houston, TXbroken clouds786
Miami, FLbroken clouds826
Phoenix, AZbroken clouds685
San Diego, CAbroken clouds624
Seattle, WAovercast clouds524
Anaheim, CAovercast clouds643
Arlington, TXclear sky623
Baltimore, MDbroken clouds543
Cincinnati, OHbroken clouds523
Denver, COclear sky563
Kansas City, MOfew clouds523
Los Angeles, CAbroken clouds603
Philadelphia, PAovercast clouds513
San Francisco, CAclear sky573
St. Louis, MOclear sky533
Washington, DCovercast clouds553
Sacramento, CAfew clouds511
Boston, MAovercast clouds461
Bronx, NYbroken clouds491
Chicago (AL), ILfew clouds481
Chicago (NL), ILscattered clouds481
Cleveland, OHclear sky461
Detroit, MIclear sky441
Milwaukee, WIovercast clouds431
Minneapolis, MNovercast clouds461
Pittsburgh, PAbroken clouds491
Queens, NYovercast clouds491
Toronto, ONbroken clouds431
Data last updated: 1763834170
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