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	100	10
Baltimore, MD	overcast clouds	86	10
Boston, MA	clear sky	88	10
Chicago (AL), IL	clear sky	87	10
Chicago (NL), IL	clear sky	87	10
Cincinnati, OH	clear sky	87	10
Houston, TX	few clouds	98	10
Kansas City, MO	broken clouds	89	10
Las Vegas, NV	clear sky	104	10
Philadelphia, PA	overcast clouds	88	10
Phoenix, AZ	clear sky	101	10
Pittsburgh, PA	clear sky	87	10
Sacramento, CA	clear sky	94	10
St. Louis, MO	clear sky	88	10
Tampa, FL	overcast clouds	89	10
Washington, DC	overcast clouds	88	10
Anaheim, CA	clear sky	84	8
Bronx, NY	overcast clouds	85	8
Detroit, MI	clear sky	87	8
Los Angeles, CA	clear sky	83	8
Milwaukee, WI	broken clouds	83	8
Minneapolis, MN	scattered clouds	78	8
Queens, NY	overcast clouds	84	8
San Diego, CA	scattered clouds	80	8
San Francisco, CA	clear sky	70	8
Toronto, ON	clear sky	82	8
Atlanta, GA	overcast clouds	82	7
Cleveland, OH	clear sky	84	6
Denver, CO	overcast clouds	74	6
Miami, FL	overcast clouds	86	6
Seattle, WA	clear sky	77	6
Tampa Bay, FL	overcast clouds	89	6

Data last updated: 1785873435

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