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™
Arlington, TX	clear sky	98	10
Atlanta, GA	clear sky	93	10
Cincinnati, OH	scattered clouds	88	10
Denver, CO	clear sky	98	10
Houston, TX	clear sky	96	10
Kansas City, MO	clear sky	96	10
Las Vegas, NV	scattered clouds	98	10
Los Angeles, CA	broken clouds	85	10
Minneapolis, MN	clear sky	89	10
Phoenix, AZ	broken clouds	101	10
Sacramento, CA	broken clouds	86	10
St. Louis, MO	clear sky	92	10
Tampa, FL	overcast clouds	85	10
Washington, DC	clear sky	86	10
Anaheim, CA	overcast clouds	82	8
Baltimore, MD	few clouds	84	8
Boston, MA	few clouds	83	8
Bronx, NY	clear sky	82	8
Chicago (AL), IL	overcast clouds	80	8
Chicago (NL), IL	overcast clouds	80	8
Cleveland, OH	overcast clouds	82	8
Milwaukee, WI	overcast clouds	82	8
Philadelphia, PA	clear sky	84	8
Pittsburgh, PA	clear sky	82	8
Queens, NY	clear sky	81	8
San Diego, CA	broken clouds	82	8
San Francisco, CA	light rain	65	8
Toronto, ON	clear sky	78	8
Detroit, MI	overcast clouds	81	7
Miami, FL	light rain	92	6
Seattle, WA	overcast clouds	75	6
Tampa Bay, FL	overcast clouds	85	5

Data last updated: 1784573767

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