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	broken clouds	87	10
Sacramento, CA	clear sky	78	8
Anaheim, CA	clear sky	75	8
Arlington, TX	clear sky	76	8
Houston, TX	broken clouds	84	8
Los Angeles, CA	clear sky	68	8
San Francisco, CA	broken clouds	62	8
St. Louis, MO	clear sky	77	8
Baltimore, MD	overcast clouds	70	6
Cincinnati, OH	clear sky	78	5
Atlanta, GA	few clouds	81	4
Phoenix, AZ	few clouds	82	4
San Diego, CA	few clouds	70	4
Chicago (AL), IL	overcast clouds	56	3
Chicago (NL), IL	overcast clouds	55	3
Denver, CO	scattered clouds	63	3
Kansas City, MO	overcast clouds	52	3
Miami, FL	scattered clouds	81	3
Seattle, WA	overcast clouds	56	3
Washington, DC	few clouds	73	3
Bronx, NY	clear sky	66	2
Philadelphia, PA	broken clouds	70	2
Boston, MA	scattered clouds	61	1
Cleveland, OH	broken clouds	58	1
Detroit, MI	scattered clouds	56	1
Milwaukee, WI	overcast clouds	46	1
Minneapolis, MN	moderate rain	51	1
Pittsburgh, PA	clear sky	68	1
Queens, NY	broken clouds	67	1
Toronto, ON	few clouds	48	1

Data last updated: 1745186166

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