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	93	10
Arlington, TX	clear sky	101	10
Atlanta, GA	overcast clouds	89	10
Baltimore, MD	broken clouds	94	10
Boston, MA	overcast clouds	90	10
Bronx, NY	scattered clouds	89	10
Cincinnati, OH	scattered clouds	90	10
Cleveland, OH	clear sky	88	10
Detroit, MI	overcast clouds	89	10
Houston, TX	heavy intensity rain	92	10
Kansas City, MO	clear sky	89	10
Las Vegas, NV	clear sky	106	10
Los Angeles, CA	clear sky	90	10
Minneapolis, MN	clear sky	85	10
Phoenix, AZ	clear sky	110	10
Queens, NY	scattered clouds	89	10
Sacramento, CA	scattered clouds	94	10
St. Louis, MO	clear sky	91	10
Tampa, FL	broken clouds	90	10
Washington, DC	light rain	90	10
Denver, CO	scattered clouds	99	9
San Diego, CA	few clouds	86	9
Chicago (AL), IL	clear sky	82	8
Chicago (NL), IL	clear sky	82	8
Milwaukee, WI	clear sky	81	8
Philadelphia, PA	scattered clouds	84	8
Pittsburgh, PA	scattered clouds	84	8
San Francisco, CA	scattered clouds	65	8
Seattle, WA	overcast clouds	82	8
Toronto, ON	broken clouds	83	8
Miami, FL	clear sky	91	7
Tampa Bay, FL	broken clouds	90	4

Data last updated: 1786222565

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