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	92	10
Atlanta, GA	broken clouds	91	10
Houston, TX	broken clouds	91	10
Kansas City, MO	broken clouds	88	10
Philadelphia, PA	broken clouds	86	10
Phoenix, AZ	overcast clouds	91	10
St. Louis, MO	overcast clouds	90	10
Tampa, FL	few clouds	92	10
Miami, FL	few clouds	93	9
Anaheim, CA	scattered clouds	74	8
Baltimore, MD	overcast clouds	81	8
Boston, MA	clear sky	81	8
Bronx, NY	scattered clouds	84	8
Cincinnati, OH	overcast clouds	82	8
Denver, CO	clear sky	78	8
Detroit, MI	scattered clouds	82	8
Las Vegas, NV	overcast clouds	84	8
Los Angeles, CA	scattered clouds	74	8
Pittsburgh, PA	moderate rain	75	8
Queens, NY	scattered clouds	84	8
Sacramento, CA	clear sky	65	8
San Diego, CA	broken clouds	74	8
Seattle, WA	few clouds	59	8
Toronto, ON	clear sky	80	8
Milwaukee, WI	clear sky	77	7
San Francisco, CA	overcast clouds	62	7
Washington, DC	overcast clouds	82	7
Cleveland, OH	overcast clouds	81	6
Chicago (AL), IL	broken clouds	76	5
Minneapolis, MN	broken clouds	78	5
Dyersville, IA	overcast clouds	73	4
Chicago (NL), IL	broken clouds	76	4
Tampa Bay, FL	clear sky	91	4

Data last updated: 1786726567

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