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	scattered clouds	86	10
Denver, CO	broken clouds	87	10
Las Vegas, NV	scattered clouds	102	10
Sacramento, CA	clear sky	94	10
Anaheim, CA	clear sky	83	8
Baltimore, MD	broken clouds	78	8
Boston, MA	broken clouds	76	8
Bronx, NY	clear sky	80	8
Cincinnati, OH	scattered clouds	79	8
Cleveland, OH	clear sky	76	8
Detroit, MI	clear sky	78	8
Houston, TX	clear sky	85	8
Los Angeles, CA	clear sky	81	8
Philadelphia, PA	broken clouds	77	8
Queens, NY	clear sky	81	8
San Francisco, CA	clear sky	59	8
Washington, DC	scattered clouds	78	8
Atlanta, GA	very heavy rain	77	7
Pittsburgh, PA	few clouds	75	7
St. Louis, MO	clear sky	82	7
Tampa, FL	broken clouds	80	7
Chicago (AL), IL	clear sky	74	6
Chicago (NL), IL	clear sky	74	6
Kansas City, MO	scattered clouds	80	6
Milwaukee, WI	clear sky	68	6
San Diego, CA	clear sky	77	6
Minneapolis, MN	clear sky	72	5
Phoenix, AZ	overcast clouds	100	5
Miami, FL	light rain	84	4
Seattle, WA	clear sky	77	4
Tampa Bay, FL	overcast clouds	81	4
Toronto, ON	clear sky	75	4

Data last updated: 1786244166

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