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	few clouds	89	10
Houston, TX	few clouds	90	10
Las Vegas, NV	few clouds	92	10
Miami, FL	overcast clouds	91	10
Phoenix, AZ	few clouds	98	10
Tampa, FL	broken clouds	87	10
Anaheim, CA	clear sky	72	8
Atlanta, GA	overcast clouds	84	8
Baltimore, MD	clear sky	80	8
Bronx, NY	broken clouds	76	8
Chicago (AL), IL	clear sky	74	8
Cincinnati, OH	clear sky	78	8
Detroit, MI	clear sky	79	8
Los Angeles, CA	clear sky	72	8
Minneapolis, MN	clear sky	85	8
Pittsburgh, PA	broken clouds	73	8
Sacramento, CA	clear sky	70	8
San Diego, CA	clear sky	71	8
Denver, CO	scattered clouds	82	7
Kansas City, MO	scattered clouds	83	7
Milwaukee, WI	clear sky	78	7
Philadelphia, PA	scattered clouds	80	7
Washington, DC	clear sky	81	7
St. Louis, MO	clear sky	81	6
Queens, NY	broken clouds	76	5
Tampa Bay, FL	overcast clouds	84	5
Boston, MA	moderate rain	67	4
Chicago (NL), IL	clear sky	74	4
San Francisco, CA	overcast clouds	59	4
Seattle, WA	few clouds	63	4
Cleveland, OH	clear sky	75	3
Toronto, ON	broken clouds	78	3

Data last updated: 1785340565

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