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™
Atlanta, GA	overcast clouds	73	8
Tampa, FL	overcast clouds	81	8
Houston, TX	overcast clouds	79	7
Los Angeles, CA	clear sky	78	7
San Diego, CA	clear sky	79	7
Arlington, TX	moderate rain	70	6
Las Vegas, NV	clear sky	69	6
Miami, FL	overcast clouds	85	6
Anaheim, CA	clear sky	78	5
Phoenix, AZ	clear sky	78	5
Sacramento, CA	broken clouds	63	4
San Francisco, CA	overcast clouds	64	4
Tampa Bay, FL	overcast clouds	80	4
Baltimore, MD	light rain	60	3
Chicago (AL), IL	clear sky	59	3
Chicago (NL), IL	clear sky	59	3
Denver, CO	few clouds	59	3
Detroit, MI	clear sky	55	3
Minneapolis, MN	broken clouds	56	3
Seattle, WA	broken clouds	57	3
Toronto, ON	clear sky	58	3
Washington, DC	moderate rain	59	3
Williamsport, PA	clear sky	57	2
Bronx, NY	clear sky	65	2
Cincinnati, OH	clear sky	58	2
Cleveland, OH	scattered clouds	54	2
Kansas City, MO	clear sky	54	2
Philadelphia, PA	overcast clouds	62	2
Pittsburgh, PA	clear sky	56	2
St. Louis, MO	clear sky	56	2
Boston, MA	clear sky	64	1
Milwaukee, WI	clear sky	50	1
Queens, NY	clear sky	65	1

Data last updated: 1791035767

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