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	87	10
Arlington, TX	clear sky	97	10
Atlanta, GA	clear sky	91	10
Baltimore, MD	overcast clouds	87	10
Cincinnati, OH	clear sky	85	10
Denver, CO	clear sky	97	10
Houston, TX	broken clouds	96	10
Kansas City, MO	few clouds	91	10
Las Vegas, NV	scattered clouds	96	10
Los Angeles, CA	clear sky	85	10
Minneapolis, MN	overcast clouds	89	10
Phoenix, AZ	broken clouds	100	10
Sacramento, CA	broken clouds	92	10
Washington, DC	overcast clouds	88	10
Boston, MA	clear sky	81	8
Bronx, NY	clear sky	81	8
Detroit, MI	clear sky	80	8
Pittsburgh, PA	scattered clouds	79	8
San Diego, CA	scattered clouds	83	8
San Francisco, CA	overcast clouds	65	8
Tampa, FL	light rain	83	8
St. Louis, MO	scattered clouds	86	7
Toronto, ON	clear sky	76	7
Chicago (AL), IL	clear sky	77	6
Miami, FL	few clouds	90	6
Milwaukee, WI	clear sky	80	6
Philadelphia, PA	clear sky	82	6
Seattle, WA	clear sky	73	5
Chicago (NL), IL	clear sky	77	4
Cleveland, OH	clear sky	77	4
Queens, NY	clear sky	81	4
Tampa Bay, FL	overcast clouds	82	4

Data last updated: 1784490966

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