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™
Houston, TX	broken clouds	85	10
Tampa, FL	broken clouds	90	10
Anaheim, CA	few clouds	64	8
Boston, MA	overcast clouds	60	8
Philadelphia, PA	broken clouds	74	8
Pittsburgh, PA	overcast clouds	68	8
Queens, NY	overcast clouds	59	8
San Francisco, CA	few clouds	59	8
Washington, DC	broken clouds	78	8
Bronx, NY	overcast clouds	60	7
Los Angeles, CA	scattered clouds	62	7
Detroit, MI	broken clouds	63	6
Atlanta, GA	broken clouds	83	5
Sacramento, CA	clear sky	63	4
Baltimore, MD	broken clouds	79	4
Cincinnati, OH	overcast clouds	63	4
Cleveland, OH	overcast clouds	67	4
Phoenix, AZ	broken clouds	67	4
San Diego, CA	scattered clouds	60	4
Toronto, ON	clear sky	64	4
Arlington, TX	overcast clouds	62	3
Kansas City, MO	few clouds	55	3
Miami, FL	broken clouds	83	3
Seattle, WA	broken clouds	54	3
St. Louis, MO	overcast clouds	54	3
Chicago (AL), IL	overcast clouds	48	1
Chicago (NL), IL	overcast clouds	48	1
Denver, CO	light rain	39	1
Milwaukee, WI	overcast clouds	47	1
Minneapolis, MN	overcast clouds	42	1

Data last updated: 1743713766

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