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™
Arlington, TX	overcast clouds	74	8
Atlanta, GA	broken clouds	70	8
Houston, TX	broken clouds	78	8
Tampa, FL	few clouds	81	8
Denver, CO	clear sky	64	6
Miami, FL	overcast clouds	82	6
Baltimore, MD	clear sky	59	5
Bronx, NY	broken clouds	54	5
Phoenix, AZ	clear sky	61	4
Anaheim, CA	overcast clouds	53	3
Kansas City, MO	overcast clouds	54	3
Los Angeles, CA	overcast clouds	52	3
Minneapolis, MN	overcast clouds	51	3
Philadelphia, PA	scattered clouds	56	3
Queens, NY	broken clouds	54	3
San Diego, CA	scattered clouds	56	3
Washington, DC	scattered clouds	59	3
Detroit, MI	overcast clouds	57	2
Pittsburgh, PA	few clouds	54	2
St. Louis, MO	overcast clouds	54	2
Sacramento, CA	overcast clouds	50	1
Boston, MA	moderate rain	49	1
Chicago (AL), IL	few clouds	54	1
Chicago (NL), IL	few clouds	53	1
Cincinnati, OH	clear sky	57	1
Cleveland, OH	clear sky	53	1
Milwaukee, WI	clear sky	52	1
San Francisco, CA	overcast clouds	51	1
Seattle, WA	overcast clouds	49	1
Toronto, ON	clear sky	54	1

Data last updated: 1745765768

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