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™
Phoenix, AZ	clear sky	86	10
Arlington, TX	broken clouds	75	8
Atlanta, GA	clear sky	73	8
Boston, MA	broken clouds	73	8
Bronx, NY	clear sky	74	8
Chicago (AL), IL	broken clouds	79	8
Chicago (NL), IL	broken clouds	79	8
Cleveland, OH	clear sky	76	8
Houston, TX	overcast clouds	78	8
Kansas City, MO	clear sky	75	8
Miami, FL	broken clouds	79	8
Milwaukee, WI	heavy intensity rain	73	8
Queens, NY	broken clouds	74	8
St. Louis, MO	clear sky	80	8
Tampa, FL	clear sky	77	8
Toronto, ON	broken clouds	77	8
Baltimore, MD	broken clouds	71	7
Cincinnati, OH	scattered clouds	75	7
Detroit, MI	few clouds	79	7
Philadelphia, PA	scattered clouds	72	7
Pittsburgh, PA	clear sky	72	7
Washington, DC	scattered clouds	71	7
Denver, CO	few clouds	64	6
Anaheim, CA	overcast clouds	62	5
Minneapolis, MN	clear sky	67	5
Sacramento, CA	clear sky	59	4
Los Angeles, CA	clear sky	62	4
San Diego, CA	overcast clouds	64	4
San Francisco, CA	broken clouds	53	3
Seattle, WA	scattered clouds	54	2

Data last updated: 1751802966

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