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	broken clouds	92	10
Arlington, TX	broken clouds	97	10
Atlanta, GA	clear sky	90	10
Houston, TX	clear sky	99	10
Kansas City, MO	overcast clouds	86	10
Las Vegas, NV	few clouds	99	10
Los Angeles, CA	broken clouds	92	10
Phoenix, AZ	clear sky	110	10
Sacramento, CA	overcast clouds	87	10
San Diego, CA	scattered clouds	87	10
Seattle, WA	broken clouds	85	10
St. Louis, MO	clear sky	88	10
Tampa, FL	overcast clouds	90	10
Williamsport, PA	overcast clouds	77	8
Baltimore, MD	broken clouds	82	8
Boston, MA	broken clouds	80	8
Bronx, NY	overcast clouds	79	8
Chicago (NL), IL	few clouds	79	8
Cincinnati, OH	clear sky	82	8
Denver, CO	few clouds	84	8
Miami, FL	light rain	90	8
Milwaukee, WI	few clouds	80	8
Minneapolis, MN	scattered clouds	80	8
Pittsburgh, PA	overcast clouds	78	8
Queens, NY	overcast clouds	78	8
San Francisco, CA	overcast clouds	68	8
Philadelphia, PA	overcast clouds	78	7
Washington, DC	scattered clouds	82	7
Chicago (AL), IL	few clouds	79	6
Detroit, MI	broken clouds	79	6
Toronto, ON	overcast clouds	76	6
Cleveland, OH	clear sky	76	5
Tampa Bay, FL	overcast clouds	89	5

Data last updated: 1787687768

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