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	broken clouds	90	10
Boston, MA	few clouds	86	10
Bronx, NY	clear sky	87	10
Cincinnati, OH	broken clouds	86	10
Philadelphia, PA	broken clouds	89	10
Phoenix, AZ	few clouds	100	10
Pittsburgh, PA	broken clouds	85	10
Queens, NY	broken clouds	87	10
Tampa, FL	broken clouds	91	10
Washington, DC	broken clouds	91	10
Anaheim, CA	overcast clouds	68	8
Arlington, TX	overcast clouds	77	8
Denver, CO	clear sky	84	8
Kansas City, MO	clear sky	75	8
San Diego, CA	overcast clouds	65	8
St. Louis, MO	scattered clouds	79	8
Sacramento, CA	clear sky	70	7
Chicago (AL), IL	overcast clouds	77	7
Detroit, MI	overcast clouds	74	7
Houston, TX	overcast clouds	71	7
Los Angeles, CA	overcast clouds	64	7
Miami, FL	broken clouds	88	7
Milwaukee, WI	clear sky	69	7
Atlanta, GA	overcast clouds	82	6
Cleveland, OH	broken clouds	80	6
San Francisco, CA	overcast clouds	58	6
Toronto, ON	few clouds	73	6
Chicago (NL), IL	overcast clouds	73	4
Minneapolis, MN	few clouds	68	4
Seattle, WA	overcast clouds	56	4

Data last updated: 1749750967

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