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	78	8
Anaheim, CA	clear sky	71	8
Boston, MA	broken clouds	66	8
Bronx, NY	broken clouds	74	8
Houston, TX	moderate rain	77	8
Los Angeles, CA	clear sky	67	8
Philadelphia, PA	scattered clouds	79	8
Phoenix, AZ	few clouds	93	8
San Francisco, CA	broken clouds	60	8
Seattle, WA	scattered clouds	69	8
Tampa, FL	broken clouds	80	8
Washington, DC	scattered clouds	80	8
Baltimore, MD	clear sky	76	7
Pittsburgh, PA	broken clouds	63	7
Detroit, MI	overcast clouds	63	6
Queens, NY	broken clouds	72	6
St. Louis, MO	clear sky	65	6
Atlanta, GA	broken clouds	78	5
Cleveland, OH	clear sky	66	5
Cincinnati, OH	overcast clouds	63	4
San Diego, CA	broken clouds	65	4
Arlington, TX	broken clouds	67	3
Denver, CO	few clouds	65	3
Kansas City, MO	overcast clouds	54	3
Miami, FL	scattered clouds	78	3
Toronto, ON	broken clouds	63	3
Chicago (AL), IL	broken clouds	49	1
Chicago (NL), IL	broken clouds	48	1
Milwaukee, WI	clear sky	48	1
Minneapolis, MN	overcast clouds	50	1

Data last updated: 1746230166

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