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	89	10
Atlanta, GA	few clouds	87	10
Miami, FL	clear sky	90	10
Phoenix, AZ	clear sky	93	10
Tampa, FL	clear sky	89	10
Washington, DC	broken clouds	85	10
Dyersville, IA	broken clouds	73	8
Anaheim, CA	scattered clouds	70	8
Baltimore, MD	overcast clouds	85	8
Boston, MA	overcast clouds	70	8
Chicago (AL), IL	broken clouds	74	8
Cincinnati, OH	overcast clouds	80	8
Detroit, MI	clear sky	71	8
Houston, TX	clear sky	85	8
Las Vegas, NV	clear sky	83	8
Los Angeles, CA	clear sky	69	8
Milwaukee, WI	broken clouds	74	8
Minneapolis, MN	few clouds	74	8
Pittsburgh, PA	broken clouds	78	8
Bronx, NY	overcast clouds	72	7
Denver, CO	clear sky	74	7
St. Louis, MO	clear sky	77	7
Kansas City, MO	clear sky	76	6
Philadelphia, PA	overcast clouds	76	6
Tampa Bay, FL	clear sky	90	6
Sacramento, CA	overcast clouds	66	5
San Diego, CA	broken clouds	71	5
San Francisco, CA	overcast clouds	58	5
Chicago (NL), IL	broken clouds	74	4
Cleveland, OH	overcast clouds	72	4
Queens, NY	overcast clouds	73	4
Toronto, ON	clear sky	77	4
Seattle, WA	overcast clouds	56	3

Data last updated: 1786978567

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