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
Houston, TX	clear sky	88	10
Las Vegas, NV	broken clouds	91	10
Miami, FL	overcast clouds	90	10
Phoenix, AZ	few clouds	94	10
Tampa, FL	overcast clouds	89	10
Anaheim, CA	few clouds	78	8
Atlanta, GA	overcast clouds	82	8
Chicago (AL), IL	scattered clouds	74	8
Chicago (NL), IL	broken clouds	75	8
Cleveland, OH	clear sky	76	8
Denver, CO	clear sky	81	8
Kansas City, MO	clear sky	81	8
Los Angeles, CA	few clouds	76	8
Minneapolis, MN	broken clouds	73	8
St. Louis, MO	clear sky	81	8
Toronto, ON	broken clouds	74	8
Cincinnati, OH	clear sky	80	7
Milwaukee, WI	overcast clouds	70	7
San Diego, CA	clear sky	74	7
Pittsburgh, PA	clear sky	75	6
Sacramento, CA	overcast clouds	65	6
San Francisco, CA	broken clouds	59	6
Washington, DC	scattered clouds	78	6
Williamsport, PA	clear sky	72	5
Baltimore, MD	clear sky	75	5
Boston, MA	overcast clouds	70	5
Bronx, NY	scattered clouds	73	5
Detroit, MI	few clouds	78	5
Philadelphia, PA	clear sky	75	5
Tampa Bay, FL	overcast clouds	88	5
Queens, NY	scattered clouds	75	4
Seattle, WA	overcast clouds	64	4

Data last updated: 1787327766

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