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	few clouds	89	10
Arlington, TX	clear sky	98	10
Denver, CO	clear sky	99	10
Houston, TX	overcast clouds	95	10
Kansas City, MO	clear sky	97	10
Las Vegas, NV	clear sky	107	10
Los Angeles, CA	broken clouds	89	10
Minneapolis, MN	clear sky	90	10
Phoenix, AZ	clear sky	112	10
Sacramento, CA	clear sky	90	10
St. Louis, MO	broken clouds	90	10
Tampa, FL	overcast clouds	91	10
Atlanta, GA	overcast clouds	83	8
Baltimore, MD	clear sky	82	8
Chicago (AL), IL	overcast clouds	79	8
Chicago (NL), IL	overcast clouds	80	8
Cincinnati, OH	broken clouds	81	8
Detroit, MI	broken clouds	84	8
Miami, FL	light rain	89	8
Milwaukee, WI	broken clouds	81	8
Philadelphia, PA	clear sky	83	8
Pittsburgh, PA	scattered clouds	83	8
Queens, NY	clear sky	80	8
San Diego, CA	broken clouds	81	8
San Francisco, CA	scattered clouds	70	8
Seattle, WA	overcast clouds	71	8
Toronto, ON	overcast clouds	79	8
Washington, DC	clear sky	83	8
Bronx, NY	clear sky	80	7
Cleveland, OH	overcast clouds	81	6
Tampa Bay, FL	overcast clouds	92	5
Boston, MA	clear sky	79	4

Data last updated: 1785009366

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