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	clear sky	90	10
Arlington, TX	broken clouds	99	10
Atlanta, GA	broken clouds	88	10
Baltimore, MD	clear sky	92	10
Boston, MA	clear sky	90	10
Bronx, NY	clear sky	91	10
Cincinnati, OH	clear sky	91	10
Cleveland, OH	clear sky	86	10
Denver, CO	overcast clouds	94	10
Detroit, MI	clear sky	87	10
Houston, TX	broken clouds	92	10
Kansas City, MO	clear sky	94	10
Las Vegas, NV	few clouds	105	10
Los Angeles, CA	clear sky	90	10
Minneapolis, MN	scattered clouds	86	10
Philadelphia, PA	clear sky	91	10
Phoenix, AZ	clear sky	108	10
Pittsburgh, PA	clear sky	87	10
Queens, NY	clear sky	91	10
Sacramento, CA	clear sky	99	10
St. Louis, MO	few clouds	94	10
Tampa, FL	broken clouds	89	10
Washington, DC	clear sky	95	10
Chicago (AL), IL	heavy intensity rain	81	8
Chicago (NL), IL	moderate rain	81	8
San Diego, CA	scattered clouds	83	8
San Francisco, CA	few clouds	70	8
Toronto, ON	few clouds	82	8
Miami, FL	light rain	90	7
Seattle, WA	broken clouds	77	7
Tampa Bay, FL	heavy intensity rain	88	5
Milwaukee, WI	overcast clouds	74	4

Data last updated: 1786308966

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