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	clear sky	101	10
Atlanta, GA	broken clouds	91	10
Baltimore, MD	broken clouds	86	10
Cincinnati, OH	few clouds	87	10
Denver, CO	broken clouds	88	10
Detroit, MI	overcast clouds	90	10
Houston, TX	few clouds	96	10
Kansas City, MO	few clouds	87	10
Las Vegas, NV	clear sky	101	10
Los Angeles, CA	clear sky	89	10
Miami, FL	overcast clouds	92	10
Philadelphia, PA	clear sky	87	10
Phoenix, AZ	scattered clouds	106	10
Pittsburgh, PA	clear sky	86	10
Sacramento, CA	clear sky	87	10
Tampa, FL	overcast clouds	85	10
Toronto, ON	clear sky	86	10
Washington, DC	clear sky	88	10
Boston, MA	broken clouds	77	8
Bronx, NY	scattered clouds	85	8
Chicago (NL), IL	light rain	79	8
Queens, NY	scattered clouds	84	8
San Diego, CA	scattered clouds	82	8
San Francisco, CA	few clouds	69	8
St. Louis, MO	overcast clouds	76	8
Cleveland, OH	overcast clouds	85	7
Chicago (AL), IL	overcast clouds	79	6
Seattle, WA	clear sky	76	6
Tampa Bay, FL	overcast clouds	86	5
Milwaukee, WI	overcast clouds	76	4
Minneapolis, MN	moderate rain	64	3

Data last updated: 1785524166

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