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™
Kansas City, MO	scattered clouds	85	10
Las Vegas, NV	clear sky	88	10
Miami, FL	overcast clouds	85	10
Phoenix, AZ	clear sky	93	10
Arlington, TX	clear sky	82	8
Atlanta, GA	overcast clouds	78	8
Baltimore, MD	clear sky	81	8
Bronx, NY	scattered clouds	79	8
Chicago (AL), IL	few clouds	81	8
Chicago (NL), IL	scattered clouds	81	8
Cleveland, OH	clear sky	77	8
Denver, CO	overcast clouds	79	8
Detroit, MI	broken clouds	81	8
Houston, TX	clear sky	84	8
Milwaukee, WI	overcast clouds	79	8
Minneapolis, MN	broken clouds	84	8
Philadelphia, PA	few clouds	78	8
Pittsburgh, PA	broken clouds	77	8
Queens, NY	scattered clouds	80	8
San Diego, CA	few clouds	72	8
St. Louis, MO	clear sky	83	8
Tampa, FL	light rain	84	8
Toronto, ON	scattered clouds	76	8
Washington, DC	few clouds	81	8
Anaheim, CA	clear sky	70	7
Boston, MA	clear sky	73	7
Cincinnati, OH	clear sky	78	7
Los Angeles, CA	clear sky	68	6
Sacramento, CA	clear sky	61	5
Seattle, WA	broken clouds	61	5
Tampa Bay, FL	clear sky	85	5
San Francisco, CA	scattered clouds	58	4

Data last updated: 1785160629

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