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™
Anaheim, CA	clear sky	90	10
Arlington, TX	few clouds	105	10
Atlanta, GA	clear sky	91	10
Denver, CO	clear sky	89	10
Houston, TX	clear sky	101	10
Las Vegas, NV	clear sky	102	10
Los Angeles, CA	clear sky	91	10
Phoenix, AZ	scattered clouds	109	10
San Diego, CA	scattered clouds	85	10
Tampa, FL	scattered clouds	89	10
St. Louis, MO	clear sky	86	9
Williamsport, PA	overcast clouds	78	8
Baltimore, MD	overcast clouds	76	8
Chicago (AL), IL	clear sky	81	8
Cincinnati, OH	clear sky	85	8
Cleveland, OH	scattered clouds	76	8
Detroit, MI	overcast clouds	73	8
Milwaukee, WI	clear sky	78	8
Minneapolis, MN	clear sky	80	8
Philadelphia, PA	broken clouds	78	8
Pittsburgh, PA	overcast clouds	84	8
Queens, NY	overcast clouds	76	8
Sacramento, CA	clear sky	84	8
San Francisco, CA	few clouds	69	8
Toronto, ON	overcast clouds	74	8
Washington, DC	broken clouds	78	8
Bronx, NY	overcast clouds	76	7
Chicago (NL), IL	clear sky	82	7
Miami, FL	few clouds	93	7
Seattle, WA	broken clouds	66	7
Boston, MA	overcast clouds	69	6
Kansas City, MO	few clouds	83	5
Tampa Bay, FL	broken clouds	88	5

Data last updated: 1787428565

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