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™
Sacramento, CA	clear sky	93	10
Denver, CO	clear sky	86	10
Houston, TX	clear sky	87	10
Phoenix, AZ	broken clouds	101	10
Anaheim, CA	clear sky	71	8
Atlanta, GA	few clouds	81	8
Baltimore, MD	few clouds	77	8
Boston, MA	few clouds	77	8
Chicago (AL), IL	broken clouds	83	8
Cleveland, OH	clear sky	76	8
Kansas City, MO	clear sky	81	8
Los Angeles, CA	clear sky	71	8
Milwaukee, WI	broken clouds	74	8
Minneapolis, MN	clear sky	81	8
Philadelphia, PA	overcast clouds	77	8
Queens, NY	broken clouds	75	8
San Francisco, CA	scattered clouds	58	8
Tampa, FL	few clouds	81	8
Washington, DC	scattered clouds	78	8
Bronx, NY	clear sky	76	7
Chicago (NL), IL	scattered clouds	84	7
Cincinnati, OH	few clouds	76	7
Detroit, MI	clear sky	81	7
Miami, FL	overcast clouds	80	7
Toronto, ON	overcast clouds	76	7
Pittsburgh, PA	few clouds	73	6
St. Louis, MO	overcast clouds	82	6
San Diego, CA	few clouds	68	5
Arlington, TX	few clouds	84	4
Seattle, WA	broken clouds	70	4

Data last updated: 1751507765

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