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	71	8
Tampa, FL	overcast clouds	80	8
Arlington, TX	light rain	70	6
Houston, TX	scattered clouds	76	6
Los Angeles, CA	clear sky	78	6
Miami, FL	overcast clouds	83	6
Tampa Bay, FL	overcast clouds	80	6
Phoenix, AZ	clear sky	78	5
San Diego, CA	clear sky	80	5
Anaheim, CA	clear sky	79	4
Las Vegas, NV	few clouds	69	4
Sacramento, CA	overcast clouds	64	4
San Francisco, CA	overcast clouds	64	4
Baltimore, MD	moderate rain	60	3
Bronx, NY	clear sky	62	3
Denver, CO	clear sky	57	3
Minneapolis, MN	broken clouds	55	3
Seattle, WA	broken clouds	57	3
Washington, DC	light rain	59	3
Williamsport, PA	clear sky	53	2
Boston, MA	clear sky	60	2
Chicago (AL), IL	clear sky	55	2
Chicago (NL), IL	clear sky	55	2
Cincinnati, OH	clear sky	55	2
Kansas City, MO	clear sky	51	2
Philadelphia, PA	overcast clouds	62	2
Pittsburgh, PA	clear sky	52	2
Queens, NY	clear sky	63	2
St. Louis, MO	clear sky	52	2
Toronto, ON	clear sky	52	2
Cleveland, OH	broken clouds	49	1
Detroit, MI	clear sky	51	1
Milwaukee, WI	clear sky	46	1

Data last updated: 1791032166

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