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	scattered clouds	93	10
Atlanta, GA	broken clouds	89	10
Houston, TX	moderate rain	89	10
Kansas City, MO	clear sky	87	10
Phoenix, AZ	clear sky	109	10
Tampa, FL	broken clouds	91	10
Sacramento, CA	clear sky	81	8
Anaheim, CA	clear sky	84	8
Cincinnati, OH	scattered clouds	83	8
Los Angeles, CA	clear sky	85	8
Minneapolis, MN	very heavy rain	76	8
Pittsburgh, PA	overcast clouds	75	8
San Diego, CA	clear sky	79	8
San Francisco, CA	scattered clouds	62	8
Seattle, WA	clear sky	68	8
Chicago (NL), IL	broken clouds	84	7
Denver, CO	few clouds	92	7
Detroit, MI	clear sky	82	7
Miami, FL	scattered clouds	89	7
St. Louis, MO	scattered clouds	79	7
Toronto, ON	broken clouds	73	7
Cleveland, OH	broken clouds	78	6
Queens, NY	overcast clouds	68	6
Chicago (AL), IL	broken clouds	85	5
Milwaukee, WI	scattered clouds	82	5
Philadelphia, PA	overcast clouds	66	5
Washington, DC	light rain	67	5
Baltimore, MD	overcast clouds	66	4
Boston, MA	overcast clouds	71	4
Bronx, NY	overcast clouds	67	4

Data last updated: 1750103767

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