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™
Williamsport, PA	overcast clouds	86	10
Arlington, TX	broken clouds	90	10
Baltimore, MD	broken clouds	89	10
Bronx, NY	broken clouds	87	10
Chicago (AL), IL	scattered clouds	86	10
Cincinnati, OH	clear sky	97	10
Denver, CO	clear sky	91	10
Kansas City, MO	clear sky	98	10
Las Vegas, NV	clear sky	90	10
Minneapolis, MN	scattered clouds	86	10
Philadelphia, PA	few clouds	88	10
Phoenix, AZ	clear sky	100	10
Pittsburgh, PA	light rain	89	10
Queens, NY	broken clouds	87	10
St. Louis, MO	broken clouds	100	10
Tampa, FL	broken clouds	87	10
Washington, DC	scattered clouds	92	10
Atlanta, GA	broken clouds	96	9
Anaheim, CA	clear sky	81	8
Chicago (NL), IL	broken clouds	84	8
Cleveland, OH	light rain	84	8
Detroit, MI	heavy intensity rain	71	8
Houston, TX	overcast clouds	85	8
Los Angeles, CA	clear sky	80	8
Sacramento, CA	broken clouds	74	8
San Francisco, CA	scattered clouds	70	8
Toronto, ON	overcast clouds	83	8
Boston, MA	overcast clouds	76	7
Miami, FL	broken clouds	89	7
San Diego, CA	clear sky	77	7
Seattle, WA	overcast clouds	64	7
Milwaukee, WI	broken clouds	77	6
Tampa Bay, FL	broken clouds	86	5

Data last updated: 1788468967

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