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	scattered clouds	89	10
Bronx, NY	few clouds	85	10
Philadelphia, PA	scattered clouds	87	10
Queens, NY	few clouds	85	10
Washington, DC	broken clouds	89	10
Anaheim, CA	clear sky	71	8
Arlington, TX	overcast clouds	77	8
Atlanta, GA	scattered clouds	82	8
Chicago (NL), IL	overcast clouds	68	8
Cincinnati, OH	broken clouds	82	8
Cleveland, OH	overcast clouds	77	8
Detroit, MI	light rain	71	8
Houston, TX	overcast clouds	84	8
Kansas City, MO	overcast clouds	74	8
Los Angeles, CA	clear sky	69	8
Pittsburgh, PA	broken clouds	82	8
Sacramento, CA	overcast clouds	64	8
San Diego, CA	clear sky	70	8
St. Louis, MO	moderate rain	73	8
Tampa, FL	clear sky	82	8
San Francisco, CA	overcast clouds	61	7
Toronto, ON	overcast clouds	71	7
Chicago (AL), IL	overcast clouds	68	5
Miami, FL	broken clouds	80	5
Milwaukee, WI	overcast clouds	71	5
Phoenix, AZ	clear sky	78	5
Tampa Bay, FL	clear sky	81	5
Minneapolis, MN	broken clouds	61	4
Boston, MA	scattered clouds	74	3
Denver, CO	clear sky	59	3
Seattle, WA	light rain	44	1

Data last updated: 1776275769

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