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
Arlington, TX	clear sky	99	10
Denver, CO	scattered clouds	88	10
Houston, TX	broken clouds	95	10
Las Vegas, NV	clear sky	106	10
Los Angeles, CA	clear sky	85	10
Miami, FL	light rain	89	10
Phoenix, AZ	clear sky	113	10
Sacramento, CA	clear sky	97	10
Atlanta, GA	clear sky	83	8
Chicago (AL), IL	overcast clouds	81	8
Chicago (NL), IL	overcast clouds	80	8
Cincinnati, OH	few clouds	81	8
Cleveland, OH	clear sky	79	8
Detroit, MI	few clouds	85	8
Kansas City, MO	overcast clouds	81	8
Milwaukee, WI	overcast clouds	79	8
Minneapolis, MN	broken clouds	84	8
Pittsburgh, PA	clear sky	77	8
San Diego, CA	clear sky	81	8
San Francisco, CA	clear sky	67	8
Seattle, WA	clear sky	78	8
St. Louis, MO	overcast clouds	85	8
Tampa, FL	overcast clouds	80	8
Washington, DC	scattered clouds	80	8
Baltimore, MD	broken clouds	79	7
Philadelphia, PA	broken clouds	77	7
Bronx, NY	broken clouds	74	6
Queens, NY	broken clouds	73	5
Tampa Bay, FL	overcast clouds	83	5
Toronto, ON	clear sky	81	5
Boston, MA	overcast clouds	67	4

Data last updated: 1785455766

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