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	90	10
Atlanta, GA	broken clouds	86	10
Houston, TX	scattered clouds	90	10
Phoenix, AZ	clear sky	104	10
Tampa, FL	broken clouds	90	10
Anaheim, CA	clear sky	80	8
Chicago (NL), IL	scattered clouds	83	8
Cincinnati, OH	broken clouds	83	8
Cleveland, OH	broken clouds	80	8
Kansas City, MO	clear sky	84	8
Los Angeles, CA	clear sky	79	8
Minneapolis, MN	broken clouds	78	8
San Diego, CA	clear sky	75	8
St. Louis, MO	overcast clouds	76	8
Denver, CO	few clouds	90	7
Miami, FL	few clouds	89	7
Toronto, ON	broken clouds	71	7
Sacramento, CA	clear sky	71	6
Chicago (AL), IL	scattered clouds	84	6
Detroit, MI	clear sky	79	6
Pittsburgh, PA	overcast clouds	74	6
San Francisco, CA	overcast clouds	57	6
Seattle, WA	clear sky	64	6
Boston, MA	clear sky	72	5
Milwaukee, WI	clear sky	80	5
Queens, NY	overcast clouds	64	5
Washington, DC	overcast clouds	66	5
Baltimore, MD	moderate rain	65	4
Bronx, NY	overcast clouds	64	4
Philadelphia, PA	overcast clouds	66	4

Data last updated: 1750096567

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