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™
Houston, TX	few clouds	87	10
Phoenix, AZ	broken clouds	93	10
Tampa, FL	light rain	85	10
Arlington, TX	few clouds	83	8
Atlanta, GA	broken clouds	77	8
Boston, MA	few clouds	78	8
Bronx, NY	overcast clouds	77	8
Chicago (AL), IL	broken clouds	84	8
Chicago (NL), IL	broken clouds	82	8
Cincinnati, OH	clear sky	80	8
Cleveland, OH	few clouds	80	8
Denver, CO	few clouds	76	8
Detroit, MI	clear sky	81	8
Kansas City, MO	clear sky	80	8
Milwaukee, WI	scattered clouds	79	8
Minneapolis, MN	clear sky	80	8
Philadelphia, PA	overcast clouds	74	8
Pittsburgh, PA	clear sky	78	8
Queens, NY	overcast clouds	76	8
St. Louis, MO	clear sky	83	8
Toronto, ON	clear sky	80	8
Baltimore, MD	broken clouds	74	7
Washington, DC	broken clouds	73	7
Sacramento, CA	clear sky	66	6
Anaheim, CA	overcast clouds	64	6
Los Angeles, CA	overcast clouds	62	5
Seattle, WA	clear sky	58	5
Miami, FL	light rain	83	4
San Diego, CA	overcast clouds	64	4
San Francisco, CA	broken clouds	55	4

Data last updated: 1751468166

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