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™
Baltimore, MD	broken clouds	70	8
Houston, TX	overcast clouds	74	8
Philadelphia, PA	broken clouds	66	8
Washington, DC	scattered clouds	74	8
Cleveland, OH	overcast clouds	63	7
Detroit, MI	overcast clouds	60	7
Bronx, NY	overcast clouds	61	6
Pittsburgh, PA	overcast clouds	64	6
Atlanta, GA	clear sky	66	5
Cincinnati, OH	broken clouds	64	5
Queens, NY	scattered clouds	62	5
Anaheim, CA	overcast clouds	59	4
Arlington, TX	clear sky	65	4
Boston, MA	overcast clouds	54	4
Kansas City, MO	clear sky	56	4
Miami, FL	broken clouds	76	4
Phoenix, AZ	few clouds	68	4
San Diego, CA	overcast clouds	59	4
Tampa, FL	broken clouds	72	4
Toronto, ON	overcast clouds	55	4
Los Angeles, CA	overcast clouds	57	3
Seattle, WA	clear sky	52	3
St. Louis, MO	few clouds	57	3
Sacramento, CA	broken clouds	51	2
Chicago (AL), IL	overcast clouds	47	1
Chicago (NL), IL	overcast clouds	45	1
Denver, CO	clear sky	40	1
Milwaukee, WI	overcast clouds	45	1
Minneapolis, MN	overcast clouds	45	1
San Francisco, CA	overcast clouds	51	1

Data last updated: 1746190566

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