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™
Arlington, TX	overcast clouds	93	10
Atlanta, GA	scattered clouds	90	10
Baltimore, MD	overcast clouds	93	10
Chicago (AL), IL	scattered clouds	86	10
Cincinnati, OH	heavy intensity rain	87	10
Cleveland, OH	scattered clouds	88	10
Denver, CO	clear sky	87	10
Detroit, MI	broken clouds	92	10
Houston, TX	overcast clouds	93	10
Kansas City, MO	clear sky	90	10
Las Vegas, NV	scattered clouds	91	10
Milwaukee, WI	scattered clouds	88	10
Minneapolis, MN	broken clouds	87	10
Pittsburgh, PA	few clouds	86	10
St. Louis, MO	scattered clouds	94	10
Washington, DC	overcast clouds	93	10
Anaheim, CA	few clouds	83	8
Boston, MA	moderate rain	77	8
Bronx, NY	moderate rain	72	8
Los Angeles, CA	clear sky	84	8
Philadelphia, PA	overcast clouds	84	8
Phoenix, AZ	light rain	84	8
Queens, NY	moderate rain	72	8
Sacramento, CA	few clouds	78	8
San Diego, CA	clear sky	80	8
San Francisco, CA	few clouds	64	8
Tampa, FL	overcast clouds	83	8
Toronto, ON	overcast clouds	82	8
Chicago (NL), IL	scattered clouds	84	7
Miami, FL	light rain	89	7
Seattle, WA	clear sky	69	6
Tampa Bay, FL	overcast clouds	81	4

Data last updated: 1784400965

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