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	97	10
Baltimore, MD	scattered clouds	86	10
Houston, TX	clear sky	95	10
Philadelphia, PA	scattered clouds	87	10
Phoenix, AZ	few clouds	108	10
Tampa, FL	scattered clouds	86	10
Washington, DC	broken clouds	87	10
Anaheim, CA	clear sky	81	8
Boston, MA	broken clouds	81	8
Cincinnati, OH	scattered clouds	85	8
Detroit, MI	moderate rain	67	8
Los Angeles, CA	clear sky	79	8
Miami, FL	scattered clouds	85	8
Pittsburgh, PA	clear sky	83	8
San Francisco, CA	broken clouds	62	8
Atlanta, GA	overcast clouds	84	7
Chicago (AL), IL	overcast clouds	72	7
Cleveland, OH	scattered clouds	80	7
Kansas City, MO	few clouds	80	6
Queens, NY	broken clouds	82	6
San Diego, CA	few clouds	75	6
Seattle, WA	clear sky	81	6
Bronx, NY	broken clouds	81	5
Denver, CO	overcast clouds	74	5
Milwaukee, WI	overcast clouds	65	5
Minneapolis, MN	clear sky	75	5
St. Louis, MO	clear sky	82	5
Chicago (NL), IL	overcast clouds	72	3
Toronto, ON	broken clouds	77	3

Data last updated: 1753923366

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