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™
Los Angeles, CA	clear sky	95	10
Miami, FL	overcast clouds	88	10
San Diego, CA	few clouds	93	10
Tampa, FL	broken clouds	87	10
Atlanta, GA	scattered clouds	83	8
Baltimore, MD	clear sky	80	8
Boston, MA	few clouds	68	8
Bronx, NY	few clouds	73	8
Philadelphia, PA	clear sky	76	8
Phoenix, AZ	clear sky	85	8
Pittsburgh, PA	overcast clouds	60	8
Queens, NY	clear sky	73	8
Sacramento, CA	clear sky	84	8
Seattle, WA	clear sky	74	8
Washington, DC	clear sky	81	8
San Francisco, CA	clear sky	82	7
Williamsport, PA	broken clouds	64	6
Anaheim, CA	scattered clouds	94	6
Cincinnati, OH	light rain	52	5
Detroit, MI	overcast clouds	53	5
Milwaukee, WI	few clouds	52	5
Tampa Bay, FL	broken clouds	87	5
Chicago (AL), IL	scattered clouds	55	4
Chicago (NL), IL	scattered clouds	55	3
Cleveland, OH	light rain	56	3
Houston, TX	few clouds	76	3
Toronto, ON	light rain	51	3
Denver, CO	clear sky	59	2
Las Vegas, NV	clear sky	78	2
St. Louis, MO	few clouds	54	2
Arlington, TX	scattered clouds	65	1
Kansas City, MO	overcast clouds	52	1
Minneapolis, MN	clear sky	52	1

Data last updated: 1792184181

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