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	clear sky	90	10
Baltimore, MD	few clouds	88	10
Cincinnati, OH	clear sky	87	10
Denver, CO	broken clouds	85	10
Houston, TX	light rain	87	10
Kansas City, MO	scattered clouds	86	10
Las Vegas, NV	scattered clouds	90	10
Philadelphia, PA	moderate rain	86	10
Phoenix, AZ	broken clouds	91	10
Queens, NY	overcast clouds	85	10
Tampa, FL	overcast clouds	90	10
Washington, DC	clear sky	90	10
Anaheim, CA	broken clouds	74	8
Atlanta, GA	broken clouds	81	8
Boston, MA	broken clouds	83	8
Bronx, NY	overcast clouds	84	8
Chicago (AL), IL	broken clouds	79	8
Cleveland, OH	overcast clouds	73	8
Detroit, MI	overcast clouds	77	8
Los Angeles, CA	scattered clouds	76	8
San Diego, CA	overcast clouds	73	8
St. Louis, MO	clear sky	83	8
Toronto, ON	overcast clouds	77	8
Chicago (NL), IL	broken clouds	81	7
Miami, FL	light rain	91	7
Minneapolis, MN	clear sky	75	7
Pittsburgh, PA	heavy intensity rain	76	7
Sacramento, CA	few clouds	67	7
San Francisco, CA	broken clouds	60	7
Milwaukee, WI	broken clouds	79	6
Tampa Bay, FL	overcast clouds	90	6
Seattle, WA	scattered clouds	59	5

Data last updated: 1786377365

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