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™
Tampa, FL	scattered clouds	86	10
Atlanta, GA	broken clouds	78	8
Houston, TX	overcast clouds	83	8
Miami, FL	few clouds	87	8
St. Louis, MO	scattered clouds	71	8
Kansas City, MO	overcast clouds	58	6
Anaheim, CA	clear sky	67	5
Los Angeles, CA	clear sky	66	5
Phoenix, AZ	clear sky	81	5
San Diego, CA	clear sky	67	5
Sacramento, CA	clear sky	65	4
Arlington, TX	clear sky	73	4
San Francisco, CA	few clouds	56	4
Baltimore, MD	broken clouds	63	3
Boston, MA	overcast clouds	55	3
Bronx, NY	clear sky	58	3
Cincinnati, OH	light rain	55	3
Cleveland, OH	overcast clouds	56	3
Denver, CO	clear sky	57	3
Detroit, MI	overcast clouds	53	3
Philadelphia, PA	scattered clouds	59	3
Pittsburgh, PA	overcast clouds	59	3
Queens, NY	clear sky	58	3
Toronto, ON	broken clouds	54	3
Washington, DC	scattered clouds	64	3
Seattle, WA	scattered clouds	51	2
Chicago (AL), IL	overcast clouds	51	1
Chicago (NL), IL	overcast clouds	50	1
Milwaukee, WI	moderate rain	42	1
Minneapolis, MN	heavy intensity rain	42	1

Data last updated: 1747752967

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