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™
Phoenix, AZ	clear sky	102	10
Sacramento, CA	clear sky	82	8
Anaheim, CA	clear sky	73	8
Arlington, TX	clear sky	84	8
Atlanta, GA	few clouds	82	8
Baltimore, MD	few clouds	81	8
Boston, MA	broken clouds	78	8
Cincinnati, OH	overcast clouds	75	8
Denver, CO	broken clouds	81	8
Houston, TX	scattered clouds	84	8
Kansas City, MO	few clouds	81	8
Los Angeles, CA	clear sky	71	8
Philadelphia, PA	overcast clouds	79	8
Pittsburgh, PA	few clouds	74	8
Queens, NY	broken clouds	78	8
San Francisco, CA	few clouds	60	8
Tampa, FL	clear sky	82	8
Washington, DC	clear sky	81	8
Bronx, NY	broken clouds	78	7
Minneapolis, MN	moderate rain	72	6
Chicago (AL), IL	broken clouds	71	5
Cleveland, OH	light rain	70	5
Detroit, MI	overcast clouds	69	5
Seattle, WA	clear sky	76	5
St. Louis, MO	clear sky	80	5
Chicago (NL), IL	broken clouds	70	4
Miami, FL	scattered clouds	81	4
Milwaukee, WI	clear sky	65	4
San Diego, CA	few clouds	69	4
Toronto, ON	overcast clouds	72	4

Data last updated: 1751943366

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