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	91	10
Arlington, TX	few clouds	98	10
Atlanta, GA	broken clouds	89	10
Cincinnati, OH	few clouds	91	10
Denver, CO	overcast clouds	89	10
Detroit, MI	clear sky	89	10
Kansas City, MO	broken clouds	94	10
Los Angeles, CA	scattered clouds	89	10
Minneapolis, MN	broken clouds	87	10
Phoenix, AZ	clear sky	106	10
Sacramento, CA	overcast clouds	93	10
St. Louis, MO	scattered clouds	94	10
Tampa, FL	overcast clouds	91	10
Boston, MA	few clouds	83	8
Bronx, NY	broken clouds	78	8
Chicago (AL), IL	overcast clouds	79	8
Chicago (NL), IL	overcast clouds	78	8
Cleveland, OH	scattered clouds	83	8
Houston, TX	overcast clouds	83	8
Philadelphia, PA	broken clouds	77	8
Pittsburgh, PA	broken clouds	76	8
San Diego, CA	scattered clouds	85	8
San Francisco, CA	overcast clouds	70	8
Toronto, ON	scattered clouds	84	8
Washington, DC	scattered clouds	79	8
Miami, FL	light rain	90	7
Milwaukee, WI	broken clouds	82	7
Seattle, WA	broken clouds	76	7
Las Vegas, NV	overcast clouds	89	6
Baltimore, MD	light rain	78	5
Queens, NY	broken clouds	76	4
Tampa Bay, FL	overcast clouds	90	4

Data last updated: 1786402565

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