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™
Arlington, TX	clear sky	95	10
Baltimore, MD	overcast clouds	87	10
Denver, CO	clear sky	95	10
Houston, TX	clear sky	94	10
Las Vegas, NV	clear sky	97	10
Phoenix, AZ	scattered clouds	105	10
Sacramento, CA	clear sky	86	10
Washington, DC	overcast clouds	86	10
Miami, FL	overcast clouds	92	9
Anaheim, CA	clear sky	78	8
Atlanta, GA	few clouds	81	8
Boston, MA	moderate rain	73	8
Bronx, NY	overcast clouds	77	8
Cincinnati, OH	scattered clouds	79	8
Detroit, MI	clear sky	79	8
Kansas City, MO	clear sky	84	8
Los Angeles, CA	clear sky	77	8
Minneapolis, MN	scattered clouds	83	8
Philadelphia, PA	very heavy rain	82	8
Pittsburgh, PA	broken clouds	76	8
Queens, NY	overcast clouds	76	8
San Diego, CA	clear sky	77	8
St. Louis, MO	clear sky	82	8
Tampa, FL	moderate rain	79	8
Chicago (NL), IL	clear sky	76	7
Milwaukee, WI	clear sky	77	7
San Francisco, CA	few clouds	68	7
Chicago (AL), IL	clear sky	77	6
Cleveland, OH	clear sky	74	4
Tampa Bay, FL	overcast clouds	80	4
Toronto, ON	clear sky	78	4
Seattle, WA	clear sky	63	2

Data last updated: 1785776166

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