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™
Arlington, TX	scattered clouds	87	10
Chicago (AL), IL	scattered clouds	86	10
Chicago (NL), IL	scattered clouds	86	10
Houston, TX	broken clouds	88	10
Kansas City, MO	few clouds	87	10
Miami, FL	light rain	88	10
St. Louis, MO	clear sky	91	10
Tampa, FL	clear sky	87	10
Atlanta, GA	clear sky	82	8
Cincinnati, OH	scattered clouds	81	8
Cleveland, OH	scattered clouds	76	8
Denver, CO	clear sky	80	8
Milwaukee, WI	clear sky	85	8
Minneapolis, MN	overcast clouds	78	8
Pittsburgh, PA	overcast clouds	69	8
San Diego, CA	clear sky	70	8
Toronto, ON	overcast clouds	70	8
Williamsport, PA	overcast clouds	67	7
Anaheim, CA	scattered clouds	65	7
Baltimore, MD	overcast clouds	74	7
Bronx, NY	scattered clouds	71	7
Detroit, MI	scattered clouds	77	7
Las Vegas, NV	few clouds	68	7
Phoenix, AZ	overcast clouds	79	7
Washington, DC	few clouds	74	7
Boston, MA	clear sky	69	6
Queens, NY	scattered clouds	71	6
San Francisco, CA	clear sky	65	6
Los Angeles, CA	broken clouds	65	5
Philadelphia, PA	few clouds	72	5
Tampa Bay, FL	clear sky	86	5
Sacramento, CA	clear sky	64	4
Seattle, WA	clear sky	56	3

Data last updated: 1791831368

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