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	scattered clouds	91	10
Houston, TX	scattered clouds	86	10
Las Vegas, NV	clear sky	101	10
Phoenix, AZ	broken clouds	100	10
Sacramento, CA	clear sky	93	10
Anaheim, CA	clear sky	77	8
Baltimore, MD	clear sky	79	8
Boston, MA	few clouds	76	8
Bronx, NY	few clouds	77	8
Chicago (AL), IL	overcast clouds	74	8
Cleveland, OH	scattered clouds	75	8
Detroit, MI	broken clouds	77	8
Los Angeles, CA	clear sky	74	8
Minneapolis, MN	scattered clouds	70	8
Philadelphia, PA	clear sky	78	8
Queens, NY	few clouds	77	8
San Francisco, CA	clear sky	62	8
Washington, DC	clear sky	78	8
Chicago (NL), IL	overcast clouds	75	7
Cincinnati, OH	clear sky	75	7
Denver, CO	clear sky	75	6
Seattle, WA	clear sky	79	6
Toronto, ON	clear sky	74	6
Atlanta, GA	overcast clouds	73	5
Kansas City, MO	broken clouds	76	5
Milwaukee, WI	overcast clouds	70	5
Pittsburgh, PA	broken clouds	71	5
San Diego, CA	clear sky	73	5
Tampa Bay, FL	overcast clouds	79	5
Miami, FL	light rain	82	4
St. Louis, MO	overcast clouds	78	4
Tampa, FL	overcast clouds	78	4

Data last updated: 1785984966

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