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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HRF forecast value available for each contest, with detailed data throughout the game.

Detailed weather data and hourly index data for each park.

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 Location	Sky Cover	Temperature (°F)	Home Run Forecast Index™
Chicago (AL), IL	scattered clouds	87	10
Chicago (NL), IL	scattered clouds	86	10
Houston, TX	broken clouds	89	10
Kansas City, MO	clear sky	88	10
Milwaukee, WI	clear sky	87	10
Minneapolis, MN	clear sky	87	10
Phoenix, AZ	few clouds	100	10
St. Louis, MO	clear sky	89	10
Arlington, TX	clear sky	91	9
Denver, CO	scattered clouds	87	9
Anaheim, CA	clear sky	76	8
Boston, MA	clear sky	70	8
Cincinnati, OH	clear sky	84	8
Los Angeles, CA	few clouds	73	8
San Francisco, CA	scattered clouds	68	8
Toronto, ON	clear sky	75	8
Atlanta, GA	broken clouds	75	7
San Diego, CA	scattered clouds	73	7
Sacramento, CA	clear sky	71	6
Baltimore, MD	scattered clouds	69	6
Cleveland, OH	clear sky	78	6
Detroit, MI	clear sky	82	6
Miami, FL	broken clouds	84	6
Queens, NY	few clouds	68	6
Philadelphia, PA	scattered clouds	71	5
Pittsburgh, PA	clear sky	77	5
Seattle, WA	scattered clouds	65	5
Bronx, NY	clear sky	69	4
Washington, DC	broken clouds	71	4
Tampa, FL	broken clouds	83	3

Data last updated: 1759528568

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