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	89	10
Arlington, TX	clear sky	99	10
Chicago (AL), IL	few clouds	85	10
Chicago (NL), IL	few clouds	85	10
Denver, CO	clear sky	96	10
Houston, TX	overcast clouds	90	10
Los Angeles, CA	clear sky	87	10
Phoenix, AZ	clear sky	110	10
Sacramento, CA	clear sky	102	10
Seattle, WA	clear sky	86	10
St. Louis, MO	broken clouds	89	10
Atlanta, GA	overcast clouds	82	8
Baltimore, MD	moderate rain	76	8
Boston, MA	few clouds	85	8
Bronx, NY	heavy intensity rain	74	8
Cincinnati, OH	broken clouds	81	8
Cleveland, OH	overcast clouds	80	8
Minneapolis, MN	scattered clouds	77	8
Philadelphia, PA	moderate rain	83	8
Queens, NY	heavy intensity rain	81	8
San Diego, CA	broken clouds	84	8
San Francisco, CA	few clouds	65	8
Toronto, ON	overcast clouds	76	8
Washington, DC	broken clouds	78	8
Detroit, MI	scattered clouds	82	7
Kansas City, MO	scattered clouds	85	7
Las Vegas, NV	broken clouds	102	7
Miami, FL	light rain	86	7
Milwaukee, WI	scattered clouds	82	7
Pittsburgh, PA	overcast clouds	75	7
Tampa, FL	overcast clouds	82	6
Tampa Bay, FL	overcast clouds	83	5

Data last updated: 1786146966

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