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	91	10
Arlington, TX	clear sky	103	10
Atlanta, GA	overcast clouds	90	10
Baltimore, MD	broken clouds	87	10
Bronx, NY	scattered clouds	86	10
Cincinnati, OH	broken clouds	87	10
Detroit, MI	overcast clouds	89	10
Houston, TX	scattered clouds	98	10
Kansas City, MO	broken clouds	87	10
Las Vegas, NV	clear sky	104	10
Los Angeles, CA	clear sky	90	10
Miami, FL	light rain	92	10
Philadelphia, PA	few clouds	87	10
Phoenix, AZ	broken clouds	109	10
Pittsburgh, PA	few clouds	86	10
Sacramento, CA	clear sky	92	10
Tampa, FL	overcast clouds	88	10
Toronto, ON	clear sky	86	10
Washington, DC	clear sky	88	10
Denver, CO	scattered clouds	90	9
Boston, MA	broken clouds	77	8
Chicago (NL), IL	moderate rain	77	8
Cleveland, OH	overcast clouds	84	8
Queens, NY	broken clouds	84	8
San Diego, CA	scattered clouds	83	8
San Francisco, CA	few clouds	69	8
St. Louis, MO	overcast clouds	79	8
Chicago (AL), IL	moderate rain	76	7
Milwaukee, WI	moderate rain	73	7
Seattle, WA	clear sky	79	7
Tampa Bay, FL	broken clouds	88	5
Minneapolis, MN	moderate rain	65	4

Data last updated: 1785527766

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