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™
Sacramento, CA	clear sky	90	10
Arlington, TX	few clouds	88	10
Phoenix, AZ	few clouds	109	10
Anaheim, CA	clear sky	75	8
Baltimore, MD	broken clouds	84	8
Boston, MA	scattered clouds	75	8
Bronx, NY	clear sky	78	8
Chicago (AL), IL	overcast clouds	82	8
Cleveland, OH	clear sky	74	8
Denver, CO	overcast clouds	76	8
Detroit, MI	overcast clouds	79	8
Houston, TX	broken clouds	79	8
Los Angeles, CA	clear sky	74	8
Miami, FL	overcast clouds	80	8
Milwaukee, WI	clear sky	76	8
Philadelphia, PA	light rain	76	8
Queens, NY	broken clouds	77	8
Tampa, FL	overcast clouds	79	8
Washington, DC	scattered clouds	85	8
Atlanta, GA	overcast clouds	77	7
Chicago (NL), IL	overcast clouds	82	7
Minneapolis, MN	scattered clouds	68	7
Pittsburgh, PA	broken clouds	75	7
Toronto, ON	overcast clouds	70	7
Cincinnati, OH	clear sky	74	6
San Francisco, CA	few clouds	58	6
San Diego, CA	few clouds	70	5
Seattle, WA	clear sky	79	5
St. Louis, MO	overcast clouds	73	5
Kansas City, MO	clear sky	72	4

Data last updated: 1751338565

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