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	89	10
Atlanta, GA	overcast clouds	86	10
Baltimore, MD	overcast clouds	88	10
Bronx, NY	broken clouds	87	10
Denver, CO	clear sky	91	10
Houston, TX	few clouds	98	10
Las Vegas, NV	broken clouds	106	10
Los Angeles, CA	clear sky	92	10
Minneapolis, MN	clear sky	86	10
Philadelphia, PA	overcast clouds	88	10
Phoenix, AZ	scattered clouds	111	10
Queens, NY	broken clouds	86	10
Sacramento, CA	few clouds	94	10
Tampa, FL	overcast clouds	87	10
Washington, DC	overcast clouds	89	10
Arlington, TX	few clouds	97	9
Boston, MA	overcast clouds	83	8
Chicago (AL), IL	light rain	72	8
Cleveland, OH	light rain	80	8
Pittsburgh, PA	overcast clouds	83	8
San Diego, CA	scattered clouds	83	8
San Francisco, CA	scattered clouds	72	8
Seattle, WA	broken clouds	69	8
St. Louis, MO	overcast clouds	72	8
Toronto, ON	overcast clouds	84	8
Cincinnati, OH	overcast clouds	81	7
Milwaukee, WI	overcast clouds	67	7
Miami, FL	overcast clouds	89	6
Detroit, MI	moderate rain	80	5
Tampa Bay, FL	overcast clouds	88	5
Chicago (NL), IL	overcast clouds	72	4
Kansas City, MO	broken clouds	79	3

Data last updated: 1785614166

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