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	few clouds	91	10
Arlington, TX	few clouds	102	10
Atlanta, GA	overcast clouds	87	10
Baltimore, MD	scattered clouds	96	10
Boston, MA	few clouds	92	10
Bronx, NY	moderate rain	86	10
Chicago (AL), IL	few clouds	87	10
Chicago (NL), IL	scattered clouds	87	10
Denver, CO	clear sky	95	10
Houston, TX	broken clouds	95	10
Kansas City, MO	broken clouds	87	10
Las Vegas, NV	broken clouds	103	10
Los Angeles, CA	clear sky	91	10
Philadelphia, PA	light rain	88	10
Phoenix, AZ	few clouds	109	10
Queens, NY	moderate rain	86	10
Sacramento, CA	clear sky	101	10
Seattle, WA	clear sky	87	10
St. Louis, MO	overcast clouds	92	10
Washington, DC	scattered clouds	88	10
Cincinnati, OH	overcast clouds	84	8
Cleveland, OH	overcast clouds	80	8
Minneapolis, MN	scattered clouds	81	8
Pittsburgh, PA	overcast clouds	80	8
San Diego, CA	scattered clouds	85	8
San Francisco, CA	few clouds	66	8
Toronto, ON	overcast clouds	79	8
Miami, FL	broken clouds	89	7
Milwaukee, WI	broken clouds	85	7
Tampa, FL	overcast clouds	84	6
Detroit, MI	scattered clouds	85	5
Tampa Bay, FL	light rain	83	5

Data last updated: 1786139767

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