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 sky685
San Diego, CAfew clouds645
Los Angeles, CAclear sky674
Phoenix, AZclear sky704
Sacramento, CAclear sky583
San Francisco, CAbroken clouds583
Arlington, TXclear sky441
Atlanta, GAclear sky271
Baltimore, MDfew clouds241
Boston, MAovercast clouds191
Bronx, NYclear sky171
Chicago (AL), ILovercast clouds231
Chicago (NL), ILovercast clouds231
Cincinnati, OHclear sky111
Cleveland, OHclear sky111
Denver, COclear sky471
Detroit, MIclear sky181
Houston, TXbroken clouds451
Kansas City, MOclear sky291
Miami, FLclear sky431
Milwaukee, WIovercast clouds251
Minneapolis, MNovercast clouds201
Philadelphia, PAovercast clouds191
Pittsburgh, PAclear sky111
Queens, NYbroken clouds181
Seattle, WAovercast clouds501
St. Louis, MOovercast clouds261
Tampa, FLclear sky411
Toronto, ONclear sky171
Washington, DCclear sky241
Data last updated: 1770000969
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