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	92	10
Atlanta, GA	few clouds	86	10
Baltimore, MD	scattered clouds	86	10
Cincinnati, OH	scattered clouds	86	10
Denver, CO	clear sky	97	10
Houston, TX	broken clouds	93	10
Kansas City, MO	clear sky	93	10
Phoenix, AZ	clear sky	104	10
St. Louis, MO	clear sky	91	10
Tampa, FL	clear sky	88	10
Washington, DC	few clouds	85	10
Sacramento, CA	clear sky	71	8
Anaheim, CA	overcast clouds	74	8
Boston, MA	scattered clouds	83	8
Bronx, NY	scattered clouds	83	8
Chicago (AL), IL	broken clouds	83	8
Chicago (NL), IL	broken clouds	83	8
Cleveland, OH	overcast clouds	80	8
Detroit, MI	broken clouds	79	8
Los Angeles, CA	overcast clouds	70	8
Milwaukee, WI	broken clouds	82	8
Minneapolis, MN	scattered clouds	82	8
Philadelphia, PA	scattered clouds	83	8
Pittsburgh, PA	scattered clouds	83	8
Queens, NY	scattered clouds	83	8
San Diego, CA	clear sky	72	8
San Francisco, CA	few clouds	62	8
Toronto, ON	broken clouds	77	8
Miami, FL	scattered clouds	90	7
Seattle, WA	overcast clouds	58	6

Data last updated: 1750445767

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