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	broken clouds	94	10
Houston, TX	clear sky	90	10
Phoenix, AZ	few clouds	92	10
St. Louis, MO	clear sky	87	10
Anaheim, CA	scattered clouds	72	8
Cincinnati, OH	clear sky	84	8
Los Angeles, CA	clear sky	71	8
Milwaukee, WI	clear sky	75	8
San Francisco, CA	few clouds	60	8
Atlanta, GA	few clouds	81	7
Chicago (AL), IL	clear sky	77	7
Chicago (NL), IL	clear sky	79	7
Cleveland, OH	clear sky	74	7
Kansas City, MO	few clouds	87	7
Miami, FL	broken clouds	83	7
Oakland, CA	few clouds	65	7
Philadelphia, PA	broken clouds	73	7
Pittsburgh, PA	scattered clouds	76	7
Minneapolis, MN	clear sky	70	6
Washington, DC	clear sky	74	6
San Diego, CA	scattered clouds	70	5
Williamsport, PA	few clouds	66	4
Baltimore, MD	few clouds	73	4
Denver, CO	few clouds	78	4
Detroit, MI	few clouds	73	4
Tampa Bay, FL	few clouds	84	4
Toronto, ON	broken clouds	70	4
Boston, MA	overcast clouds	61	3
Bronx, NY	clear sky	71	3
Queens, NY	few clouds	72	3
Seattle, WA	broken clouds	64	3

Data last updated: 1726880168

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