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	85	10
Arlington, TX	clear sky	101	10
Atlanta, GA	overcast clouds	94	10
Baltimore, MD	overcast clouds	86	10
Cincinnati, OH	few clouds	86	10
Houston, TX	clear sky	97	10
Kansas City, MO	overcast clouds	89	10
Las Vegas, NV	scattered clouds	103	10
Los Angeles, CA	clear sky	86	10
Miami, FL	light rain	85	10
Minneapolis, MN	overcast clouds	91	10
Phoenix, AZ	scattered clouds	101	10
Sacramento, CA	clear sky	89	10
St. Louis, MO	overcast clouds	91	10
Tampa, FL	overcast clouds	90	10
Washington, DC	broken clouds	88	10
Boston, MA	overcast clouds	80	8
Bronx, NY	light rain	77	8
Chicago (AL), IL	clear sky	76	8
Detroit, MI	few clouds	78	8
Milwaukee, WI	clear sky	78	8
Philadelphia, PA	overcast clouds	82	8
Pittsburgh, PA	broken clouds	81	8
Queens, NY	overcast clouds	77	8
San Diego, CA	clear sky	81	8
San Francisco, CA	clear sky	70	8
Seattle, WA	broken clouds	72	8
Denver, CO	broken clouds	87	6
Tampa Bay, FL	overcast clouds	89	6
Cleveland, OH	broken clouds	77	4
Toronto, ON	scattered clouds	79	4
Chicago (NL), IL	clear sky	76	3

Data last updated: 1785268567

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