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	overcast clouds	73	8
Anaheim, CA	overcast clouds	59	7
Sacramento, CA	clear sky	61	6
Arlington, TX	scattered clouds	74	6
Phoenix, AZ	clear sky	82	6
San Francisco, CA	overcast clouds	52	5
Atlanta, GA	scattered clouds	67	4
Chicago (NL), IL	few clouds	61	4
Detroit, MI	clear sky	60	4
Kansas City, MO	moderate rain	61	4
Los Angeles, CA	overcast clouds	57	4
Miami, FL	scattered clouds	76	4
Pittsburgh, PA	few clouds	63	4
Chicago (AL), IL	few clouds	62	3
Cincinnati, OH	clear sky	62	3
Cleveland, OH	few clouds	61	3
Denver, CO	broken clouds	57	3
Milwaukee, WI	broken clouds	58	3
Minneapolis, MN	clear sky	56	3
San Diego, CA	scattered clouds	59	3
Seattle, WA	clear sky	57	3
St. Louis, MO	clear sky	66	3
Tampa, FL	few clouds	74	3
Bronx, NY	clear sky	59	2
Philadelphia, PA	few clouds	60	2
Washington, DC	clear sky	63	2
Baltimore, MD	broken clouds	60	1
Boston, MA	clear sky	55	1
Queens, NY	scattered clouds	59	1
Toronto, ON	broken clouds	50	1

Data last updated: 1745463367

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