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	clear sky	99	10
Baltimore, MD	overcast clouds	89	10
Denver, CO	overcast clouds	99	10
Houston, TX	clear sky	99	10
Kansas City, MO	few clouds	87	10
Las Vegas, NV	clear sky	106	10
Los Angeles, CA	clear sky	88	10
Minneapolis, MN	scattered clouds	86	10
Philadelphia, PA	overcast clouds	87	10
Phoenix, AZ	clear sky	112	10
Sacramento, CA	clear sky	101	10
Washington, DC	overcast clouds	87	10
St. Louis, MO	clear sky	86	9
Atlanta, GA	broken clouds	83	8
Boston, MA	light rain	75	8
Bronx, NY	overcast clouds	84	8
Chicago (NL), IL	few clouds	79	8
Cincinnati, OH	clear sky	83	8
Detroit, MI	clear sky	82	8
Milwaukee, WI	few clouds	80	8
Pittsburgh, PA	clear sky	81	8
Queens, NY	overcast clouds	83	8
San Diego, CA	scattered clouds	82	8
San Francisco, CA	few clouds	72	8
Tampa, FL	overcast clouds	78	8
Chicago (AL), IL	scattered clouds	80	6
Miami, FL	heavy intensity rain	86	6
Toronto, ON	clear sky	80	5
Cleveland, OH	clear sky	77	4
Seattle, WA	clear sky	70	4
Tampa Bay, FL	overcast clouds	81	4

Data last updated: 1785786965

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