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™
Houston, TX	broken clouds	86	10
Kansas City, MO	clear sky	85	10
Las Vegas, NV	clear sky	92	10
Phoenix, AZ	clear sky	100	10
Tampa, FL	overcast clouds	88	10
Miami, FL	light rain	87	9
Anaheim, CA	clear sky	71	8
Arlington, TX	few clouds	85	8
Atlanta, GA	overcast clouds	76	8
Chicago (AL), IL	broken clouds	70	8
Chicago (NL), IL	overcast clouds	70	8
Cincinnati, OH	clear sky	78	8
Denver, CO	scattered clouds	82	8
Detroit, MI	clear sky	78	8
Los Angeles, CA	clear sky	71	8
Minneapolis, MN	clear sky	74	8
Pittsburgh, PA	broken clouds	75	8
Queens, NY	clear sky	78	8
San Diego, CA	clear sky	70	8
St. Louis, MO	light rain	73	8
Baltimore, MD	overcast clouds	74	7
Philadelphia, PA	clear sky	76	7
Seattle, WA	scattered clouds	62	7
Toronto, ON	overcast clouds	72	7
Washington, DC	broken clouds	74	7
Cleveland, OH	clear sky	75	6
Boston, MA	clear sky	78	5
Bronx, NY	clear sky	77	5
Milwaukee, WI	overcast clouds	72	5
Sacramento, CA	overcast clouds	65	5
San Francisco, CA	few clouds	61	5
Tampa Bay, FL	overcast clouds	87	5

Data last updated: 1784991365

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