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™
Arlington, TX	clear sky	99	10
Baltimore, MD	overcast clouds	86	10
Boston, MA	clear sky	87	10
Bronx, NY	overcast clouds	85	10
Chicago (AL), IL	clear sky	86	10
Chicago (NL), IL	clear sky	85	10
Cincinnati, OH	clear sky	86	10
Houston, TX	clear sky	97	10
Kansas City, MO	broken clouds	89	10
Las Vegas, NV	clear sky	101	10
Philadelphia, PA	overcast clouds	87	10
Phoenix, AZ	clear sky	98	10
Pittsburgh, PA	clear sky	87	10
Sacramento, CA	clear sky	89	10
St. Louis, MO	clear sky	88	10
Tampa, FL	overcast clouds	89	10
Washington, DC	overcast clouds	88	10
Atlanta, GA	overcast clouds	88	9
Anaheim, CA	clear sky	82	8
Los Angeles, CA	clear sky	81	8
Milwaukee, WI	scattered clouds	83	8
Minneapolis, MN	clear sky	78	8
Queens, NY	overcast clouds	84	8
San Diego, CA	scattered clouds	78	8
San Francisco, CA	clear sky	69	8
Toronto, ON	clear sky	81	8
Miami, FL	overcast clouds	91	7
Cleveland, OH	clear sky	82	6
Detroit, MI	clear sky	84	6
Seattle, WA	clear sky	74	5
Tampa Bay, FL	overcast clouds	89	5
Denver, CO	overcast clouds	72	4

Data last updated: 1785869842

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