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	clear sky	99	10
Baltimore, MD	broken clouds	86	10
Boston, MA	overcast clouds	88	10
Cincinnati, OH	scattered clouds	88	10
Detroit, MI	clear sky	86	10
Houston, TX	clear sky	97	10
Kansas City, MO	scattered clouds	86	10
Las Vegas, NV	clear sky	101	10
Phoenix, AZ	broken clouds	98	10
Pittsburgh, PA	clear sky	88	10
Sacramento, CA	clear sky	86	10
St. Louis, MO	scattered clouds	90	10
Washington, DC	broken clouds	86	10
Atlanta, GA	moderate rain	87	9
Anaheim, CA	clear sky	82	8
Bronx, NY	few clouds	84	8
Chicago (AL), IL	light rain	82	8
Chicago (NL), IL	clear sky	82	8
Los Angeles, CA	clear sky	82	8
Milwaukee, WI	overcast clouds	78	8
Minneapolis, MN	clear sky	79	8
Philadelphia, PA	overcast clouds	81	8
Queens, NY	clear sky	83	8
San Diego, CA	scattered clouds	79	8
San Francisco, CA	clear sky	67	8
Tampa, FL	light rain	79	8
Toronto, ON	clear sky	83	8
Seattle, WA	clear sky	78	7
Cleveland, OH	few clouds	85	6
Denver, CO	clear sky	79	6
Miami, FL	light rain	84	5
Tampa Bay, FL	light rain	82	4

Data last updated: 1785956165

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