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™
Anaheim, CA	clear sky	87	10
Arlington, TX	overcast clouds	99	10
Atlanta, GA	few clouds	90	10
Houston, TX	overcast clouds	97	10
Kansas City, MO	broken clouds	87	10
Las Vegas, NV	clear sky	104	10
Los Angeles, CA	clear sky	86	10
Miami, FL	overcast clouds	93	10
Minneapolis, MN	clear sky	95	10
Phoenix, AZ	broken clouds	109	10
Sacramento, CA	clear sky	96	10
Tampa, FL	broken clouds	86	10
Bronx, NY	broken clouds	80	8
Chicago (AL), IL	clear sky	78	8
Cincinnati, OH	clear sky	82	8
Detroit, MI	clear sky	80	8
Pittsburgh, PA	overcast clouds	78	8
San Diego, CA	clear sky	80	8
San Francisco, CA	clear sky	68	8
St. Louis, MO	clear sky	86	8
Denver, CO	light rain	72	7
Philadelphia, PA	scattered clouds	81	7
Baltimore, MD	broken clouds	81	6
Milwaukee, WI	clear sky	81	6
Queens, NY	broken clouds	81	6
Seattle, WA	broken clouds	75	6
Washington, DC	broken clouds	81	6
Chicago (NL), IL	clear sky	77	5
Tampa Bay, FL	overcast clouds	85	5
Boston, MA	overcast clouds	68	4
Cleveland, OH	clear sky	78	3
Toronto, ON	clear sky	80	3

Data last updated: 1785362166

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