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™
Sacramento, CA	clear sky	94	10
Anaheim, CA	clear sky	96	10
Los Angeles, CA	clear sky	89	10
Phoenix, AZ	few clouds	99	10
San Diego, CA	few clouds	85	10
Bronx, NY	clear sky	70	8
San Francisco, CA	few clouds	65	8
Tampa, FL	overcast clouds	75	8
Baltimore, MD	few clouds	69	7
Denver, CO	few clouds	78	7
Pittsburgh, PA	clear sky	73	7
Seattle, WA	broken clouds	63	6
Boston, MA	broken clouds	60	5
Cincinnati, OH	clear sky	68	5
Detroit, MI	clear sky	62	5
Kansas City, MO	clear sky	81	5
Philadelphia, PA	clear sky	68	5
Washington, DC	broken clouds	68	5
Houston, TX	scattered clouds	79	4
Miami, FL	broken clouds	81	4
Queens, NY	clear sky	70	4
St. Louis, MO	clear sky	74	4
Arlington, TX	scattered clouds	75	3
Atlanta, GA	heavy intensity rain	56	3
Cleveland, OH	scattered clouds	72	3
Minneapolis, MN	few clouds	73	3
Toronto, ON	clear sky	65	3
Chicago (AL), IL	few clouds	57	2
Chicago (NL), IL	clear sky	55	1
Milwaukee, WI	clear sky	54	1

Data last updated: 1746921366

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