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	clear sky	94	10
Denver, CO	scattered clouds	95	10
Houston, TX	broken clouds	93	10
Kansas City, MO	clear sky	94	10
Las Vegas, NV	few clouds	101	10
Phoenix, AZ	clear sky	109	10
St. Louis, MO	broken clouds	86	10
Tampa, FL	overcast clouds	94	10
Anaheim, CA	scattered clouds	83	8
Atlanta, GA	overcast clouds	85	8
Baltimore, MD	broken clouds	81	8
Bronx, NY	clear sky	79	8
Chicago (NL), IL	overcast clouds	75	8
Cincinnati, OH	clear sky	82	8
Detroit, MI	scattered clouds	82	8
Los Angeles, CA	few clouds	83	8
Minneapolis, MN	clear sky	84	8
Philadelphia, PA	clear sky	83	8
Pittsburgh, PA	scattered clouds	82	8
Queens, NY	clear sky	80	8
Sacramento, CA	broken clouds	79	8
San Diego, CA	clear sky	80	8
San Francisco, CA	scattered clouds	68	8
Seattle, WA	scattered clouds	66	8
Toronto, ON	overcast clouds	80	8
Washington, DC	broken clouds	81	8
Chicago (AL), IL	overcast clouds	76	7
Milwaukee, WI	overcast clouds	77	7
Miami, FL	light rain	92	6
Boston, MA	clear sky	80	5
Cleveland, OH	few clouds	78	5
Tampa Bay, FL	overcast clouds	91	4

Data last updated: 1785002166

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