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	overcast clouds	87	10
Chicago (AL), IL	few clouds	88	10
Chicago (NL), IL	clear sky	88	10
Houston, TX	broken clouds	88	10
Kansas City, MO	clear sky	89	10
Miami, FL	light rain	86	10
Milwaukee, WI	clear sky	87	10
St. Louis, MO	scattered clouds	93	10
Tampa, FL	clear sky	87	10
Denver, CO	scattered clouds	82	9
Williamsport, PA	overcast clouds	69	8
Atlanta, GA	clear sky	83	8
Bronx, NY	clear sky	71	8
Cincinnati, OH	scattered clouds	84	8
Cleveland, OH	scattered clouds	78	8
Las Vegas, NV	few clouds	69	8
Minneapolis, MN	scattered clouds	80	8
Phoenix, AZ	broken clouds	81	8
San Diego, CA	few clouds	71	8
San Francisco, CA	clear sky	66	8
Toronto, ON	overcast clouds	71	8
Anaheim, CA	scattered clouds	67	7
Baltimore, MD	broken clouds	74	7
Boston, MA	clear sky	70	7
Detroit, MI	clear sky	79	7
Pittsburgh, PA	few clouds	71	7
Washington, DC	scattered clouds	75	7
Los Angeles, CA	light rain	65	6
Philadelphia, PA	scattered clouds	73	5
Queens, NY	clear sky	71	5
Seattle, WA	clear sky	59	5
Tampa Bay, FL	clear sky	86	5
Sacramento, CA	clear sky	69	4

Data last updated: 1791838568

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