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	overcast clouds	90	10
Arlington, TX	clear sky	105	10
Atlanta, GA	scattered clouds	96	10
Baltimore, MD	overcast clouds	87	10
Houston, TX	clear sky	100	10
Las Vegas, NV	overcast clouds	102	10
Los Angeles, CA	scattered clouds	88	10
Phoenix, AZ	clear sky	103	10
Sacramento, CA	overcast clouds	89	10
Tampa, FL	overcast clouds	86	10
Washington, DC	broken clouds	87	10
Denver, CO	clear sky	91	9
Miami, FL	light rain	88	9
Bronx, NY	overcast clouds	77	8
Chicago (AL), IL	clear sky	78	8
Cincinnati, OH	clear sky	82	8
Detroit, MI	few clouds	81	8
Minneapolis, MN	overcast clouds	76	8
Philadelphia, PA	broken clouds	79	8
San Diego, CA	overcast clouds	84	8
San Francisco, CA	overcast clouds	67	8
Toronto, ON	scattered clouds	75	8
Boston, MA	overcast clouds	82	7
Kansas City, MO	clear sky	85	7
Queens, NY	overcast clouds	79	7
Seattle, WA	clear sky	81	7
Williamsport, PA	light rain	67	6
Pittsburgh, PA	overcast clouds	73	6
St. Louis, MO	broken clouds	85	6
Chicago (NL), IL	few clouds	78	5
Milwaukee, WI	broken clouds	79	5
Tampa Bay, FL	overcast clouds	87	5
Cleveland, OH	few clouds	78	4

Data last updated: 1787259366

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