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	clear sky	80	8
Miami, FL	light rain	76	8
Phoenix, AZ	overcast clouds	84	8
Arlington, TX	scattered clouds	78	6
Anaheim, CA	scattered clouds	68	5
Los Angeles, CA	clear sky	68	5
San Diego, CA	few clouds	69	5
Tampa Bay, FL	few clouds	76	5
Atlanta, GA	overcast clouds	64	4
Denver, CO	overcast clouds	60	4
Las Vegas, NV	clear sky	71	4
Sacramento, CA	clear sky	63	4
Tampa, FL	scattered clouds	75	4
San Francisco, CA	clear sky	61	3
Seattle, WA	overcast clouds	53	3
Baltimore, MD	overcast clouds	53	2
Bronx, NY	broken clouds	53	2
Chicago (AL), IL	clear sky	61	2
Chicago (NL), IL	clear sky	61	2
Cincinnati, OH	few clouds	63	2
Cleveland, OH	overcast clouds	53	2
Detroit, MI	clear sky	54	2
Kansas City, MO	scattered clouds	58	2
Milwaukee, WI	clear sky	55	2
Minneapolis, MN	overcast clouds	55	2
Philadelphia, PA	scattered clouds	52	2
Pittsburgh, PA	overcast clouds	51	2
Queens, NY	overcast clouds	54	2
St. Louis, MO	overcast clouds	63	2
Toronto, ON	clear sky	52	2
Washington, DC	broken clouds	53	2
Williamsport, PA	clear sky	42	1
Boston, MA	clear sky	48	1

Data last updated: 1790247367

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