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™
Atlanta, GA	scattered clouds	87	10
Baltimore, MD	few clouds	87	10
Chicago (AL), IL	scattered clouds	90	10
Chicago (NL), IL	scattered clouds	90	10
Cincinnati, OH	scattered clouds	91	10
Cleveland, OH	broken clouds	91	10
Detroit, MI	clear sky	90	10
Houston, TX	overcast clouds	87	10
Milwaukee, WI	scattered clouds	87	10
Philadelphia, PA	broken clouds	86	10
Phoenix, AZ	few clouds	94	10
Pittsburgh, PA	scattered clouds	88	10
St. Louis, MO	broken clouds	91	10
Tampa, FL	overcast clouds	87	10
Washington, DC	clear sky	88	10
Anaheim, CA	clear sky	74	8
Arlington, TX	light rain	81	8
Boston, MA	broken clouds	81	8
Bronx, NY	clear sky	83	8
Denver, CO	clear sky	84	8
Kansas City, MO	overcast clouds	79	8
Los Angeles, CA	clear sky	74	8
Miami, FL	broken clouds	80	8
Minneapolis, MN	broken clouds	78	8
Queens, NY	broken clouds	83	8
Toronto, ON	few clouds	82	8
San Diego, CA	few clouds	73	7
Sacramento, CA	clear sky	67	5
San Francisco, CA	broken clouds	59	4
Seattle, WA	clear sky	61	4

Data last updated: 1751734566

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