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	88	10
Arlington, TX	broken clouds	101	10
Atlanta, GA	scattered clouds	91	10
Baltimore, MD	clear sky	88	10
Boston, MA	clear sky	87	10
Bronx, NY	clear sky	86	10
Houston, TX	broken clouds	95	10
Las Vegas, NV	overcast clouds	99	10
Los Angeles, CA	clear sky	86	10
Philadelphia, PA	clear sky	87	10
Phoenix, AZ	clear sky	102	10
Queens, NY	clear sky	87	10
Sacramento, CA	clear sky	85	10
Tampa, FL	clear sky	95	10
Washington, DC	clear sky	89	10
Chicago (AL), IL	overcast clouds	78	8
Cincinnati, OH	heavy intensity rain	77	8
Denver, CO	scattered clouds	83	8
Detroit, MI	clear sky	82	8
Pittsburgh, PA	broken clouds	80	8
San Diego, CA	clear sky	83	8
San Francisco, CA	few clouds	65	8
Seattle, WA	broken clouds	70	8
St. Louis, MO	overcast clouds	81	8
Toronto, ON	broken clouds	77	8
Dyersville, IA	broken clouds	81	7
Cleveland, OH	broken clouds	79	7
Miami, FL	light rain	93	7
Minneapolis, MN	broken clouds	77	7
Kansas City, MO	broken clouds	74	5
Milwaukee, WI	broken clouds	76	5
Tampa Bay, FL	clear sky	93	5
Chicago (NL), IL	overcast clouds	77	4

Data last updated: 1787165766

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