Do certain weather conditions lead to more home runs?

Yes! Weather conditions change the distance a batted ball travels by more than 20%. Home Run Forecast provides a simple indication of how weather will help or hinder baseball flight during a game. The HRFI demonstrates a strong correlation with HRs hit and runs scored in big league games. Check out our Premium Subscription for on-demand forecast data by team and 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	90	10
Houston, TX	few clouds	93	10
Kansas City, MO	few clouds	86	10
Miami, FL	broken clouds	90	10
Minneapolis, MN	few clouds	88	10
Phoenix, AZ	scattered clouds	96	10
St. Louis, MO	few clouds	85	10
Chicago (AL), IL	broken clouds	86	9
Cincinnati, OH	few clouds	88	9
Anaheim, CA	few clouds	72	8
Atlanta, GA	broken clouds	82	8
Denver, CO	overcast clouds	80	8
Los Angeles, CA	broken clouds	70	8
Chicago (NL), IL	broken clouds	85	7
Milwaukee, WI	few clouds	85	7
San Diego, CA	scattered clouds	71	7
Williamsport, PA	clear sky	81	6
Baltimore, MD	broken clouds	77	6
Boston, MA	clear sky	82	6
Cleveland, OH	few clouds	82	6
Queens, NY	broken clouds	75	6
Toronto, ON	few clouds	80	6
Philadelphia, PA	overcast clouds	74	5
Tampa Bay, FL	broken clouds	85	5
Detroit, MI	clear sky	81	4
Oakland, CA	broken clouds	64	4
Pittsburgh, PA	clear sky	80	4
San Francisco, CA	broken clouds	64	4
Seattle, WA	broken clouds	64	4
Washington, DC	broken clouds	76	4
Bronx, NY	clear sky	75	3

Data last updated: 1726516566

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