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™
Baltimore, MD	overcast clouds	89	10
Bronx, NY	overcast clouds	87	10
Houston, TX	few clouds	86	10
Philadelphia, PA	overcast clouds	89	10
Washington, DC	overcast clouds	91	10
Anaheim, CA	overcast clouds	72	8
Arlington, TX	overcast clouds	81	8
Chicago (AL), IL	clear sky	69	8
Chicago (NL), IL	few clouds	69	8
Cincinnati, OH	overcast clouds	77	8
Cleveland, OH	overcast clouds	72	8
Kansas City, MO	clear sky	80	8
Los Angeles, CA	overcast clouds	71	8
Pittsburgh, PA	overcast clouds	82	8
Queens, NY	overcast clouds	85	8
San Diego, CA	overcast clouds	71	8
St. Louis, MO	clear sky	78	8
Tampa, FL	few clouds	84	8
Toronto, ON	overcast clouds	71	8
Atlanta, GA	clear sky	84	7
Detroit, MI	overcast clouds	66	7
Phoenix, AZ	overcast clouds	83	7
Boston, MA	overcast clouds	76	5
Miami, FL	clear sky	81	5
Minneapolis, MN	clear sky	75	5
Denver, CO	broken clouds	72	4
Milwaukee, WI	overcast clouds	64	4
San Francisco, CA	few clouds	65	4
Tampa Bay, FL	clear sky	83	4
Sacramento, CA	few clouds	67	3
Seattle, WA	scattered clouds	48	1

Data last updated: 1776365769

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