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	86	10
Arlington, TX	broken clouds	90	10
Denver, CO	clear sky	94	10
Houston, TX	scattered clouds	93	10
Las Vegas, NV	few clouds	104	10
Los Angeles, CA	scattered clouds	89	10
Phoenix, AZ	clear sky	110	10
Sacramento, CA	clear sky	85	10
Tampa, FL	clear sky	95	10
Atlanta, GA	light rain	79	8
Baltimore, MD	overcast clouds	80	8
Cincinnati, OH	overcast clouds	80	8
Miami, FL	light rain	91	8
Minneapolis, MN	overcast clouds	79	8
Philadelphia, PA	clear sky	83	8
Queens, NY	overcast clouds	82	8
San Diego, CA	scattered clouds	81	8
San Francisco, CA	clear sky	69	8
Seattle, WA	clear sky	77	8
St. Louis, MO	overcast clouds	74	8
Toronto, ON	overcast clouds	78	8
Washington, DC	overcast clouds	82	8
Boston, MA	clear sky	83	7
Bronx, NY	overcast clouds	82	7
Kansas City, MO	overcast clouds	72	7
Chicago (NL), IL	few clouds	78	6
Detroit, MI	overcast clouds	81	6
Pittsburgh, PA	overcast clouds	81	6
Cleveland, OH	overcast clouds	77	5
Tampa Bay, FL	few clouds	93	5
Chicago (AL), IL	broken clouds	78	4
Milwaukee, WI	few clouds	79	4

Data last updated: 1784919367

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