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™
Anaheim, CA	clear sky	88	10
Houston, TX	scattered clouds	93	10
Phoenix, AZ	clear sky	94	10
San Diego, CA	clear sky	87	10
Tampa, FL	broken clouds	90	10
Atlanta, GA	broken clouds	84	8
Baltimore, MD	scattered clouds	79	8
Boston, MA	broken clouds	73	8
Bronx, NY	scattered clouds	76	8
Cincinnati, OH	clear sky	75	8
Kansas City, MO	clear sky	78	8
Los Angeles, CA	clear sky	85	8
Miami, FL	broken clouds	92	8
Minneapolis, MN	scattered clouds	74	8
Pittsburgh, PA	overcast clouds	68	8
Queens, NY	broken clouds	77	8
St. Louis, MO	broken clouds	85	8
Chicago (AL), IL	broken clouds	70	7
Denver, CO	broken clouds	78	7
Detroit, MI	broken clouds	67	7
Philadelphia, PA	clear sky	75	7
San Francisco, CA	broken clouds	66	7
Seattle, WA	scattered clouds	70	7
Washington, DC	clear sky	78	7
Sacramento, CA	clear sky	71	5
Arlington, TX	overcast clouds	77	5
Milwaukee, WI	broken clouds	65	4
Chicago (NL), IL	broken clouds	69	3
Cleveland, OH	broken clouds	64	3
Toronto, ON	scattered clouds	63	3

Data last updated: 1756490165

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