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™
Sacramento, CA	clear sky	88	10
Arlington, TX	clear sky	87	10
Houston, TX	broken clouds	86	10
Anaheim, CA	clear sky	78	8
Baltimore, MD	broken clouds	74	8
Boston, MA	broken clouds	69	8
Los Angeles, CA	clear sky	78	8
Miami, FL	overcast clouds	80	8
Philadelphia, PA	broken clouds	72	8
Queens, NY	broken clouds	72	8
Tampa, FL	overcast clouds	79	8
Atlanta, GA	few clouds	74	7
Bronx, NY	clear sky	72	7
Chicago (AL), IL	scattered clouds	65	7
Phoenix, AZ	broken clouds	100	7
Washington, DC	broken clouds	74	7
Cincinnati, OH	clear sky	66	6
San Francisco, CA	scattered clouds	62	6
Detroit, MI	scattered clouds	65	5
Kansas City, MO	clear sky	67	5
Milwaukee, WI	clear sky	57	5
Pittsburgh, PA	broken clouds	70	5
San Diego, CA	scattered clouds	73	5
Seattle, WA	broken clouds	78	5
Cleveland, OH	scattered clouds	66	4
Denver, CO	overcast clouds	66	4
Toronto, ON	overcast clouds	63	4
Chicago (NL), IL	scattered clouds	65	3
Minneapolis, MN	overcast clouds	62	3
St. Louis, MO	clear sky	65	3

Data last updated: 1756090567

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