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™
Sacramento, CA	clear sky	75	8
Anaheim, CA	clear sky	69	8
Houston, TX	overcast clouds	76	8
Los Angeles, CA	clear sky	66	8
Philadelphia, PA	broken clouds	75	8
Phoenix, AZ	few clouds	92	8
Queens, NY	broken clouds	70	8
San Francisco, CA	broken clouds	57	8
Seattle, WA	scattered clouds	66	8
Washington, DC	broken clouds	76	8
Bronx, NY	clear sky	71	7
Boston, MA	scattered clouds	65	6
Tampa, FL	clear sky	78	6
Baltimore, MD	clear sky	73	5
Cincinnati, OH	broken clouds	62	5
Detroit, MI	overcast clouds	57	4
Pittsburgh, PA	broken clouds	62	4
San Diego, CA	broken clouds	64	4
St. Louis, MO	clear sky	62	4
Arlington, TX	broken clouds	65	3
Atlanta, GA	clear sky	74	3
Cleveland, OH	clear sky	64	3
Denver, CO	few clouds	63	3
Kansas City, MO	overcast clouds	54	3
Miami, FL	scattered clouds	76	3
Toronto, ON	broken clouds	56	3
Chicago (AL), IL	broken clouds	48	1
Chicago (NL), IL	broken clouds	47	1
Milwaukee, WI	broken clouds	46	1
Minneapolis, MN	overcast clouds	49	1

Data last updated: 1746233767

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