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	76	8
Atlanta, GA	overcast clouds	74	8
Baltimore, MD	scattered clouds	71	8
Boston, MA	clear sky	74	8
Bronx, NY	scattered clouds	72	8
Chicago (NL), IL	few clouds	74	8
Cincinnati, OH	overcast clouds	79	8
Cleveland, OH	moderate rain	69	8
Detroit, MI	overcast clouds	72	8
Houston, TX	scattered clouds	78	8
Kansas City, MO	scattered clouds	79	8
Philadelphia, PA	scattered clouds	75	8
Phoenix, AZ	broken clouds	84	8
Pittsburgh, PA	overcast clouds	68	8
St. Louis, MO	clear sky	79	8
Tampa, FL	scattered clouds	79	8
Washington, DC	light rain	71	8
Anaheim, CA	scattered clouds	71	7
Chicago (AL), IL	clear sky	74	7
Las Vegas, NV	few clouds	82	7
Los Angeles, CA	overcast clouds	70	7
Milwaukee, WI	broken clouds	71	7
Minneapolis, MN	broken clouds	70	7
Queens, NY	scattered clouds	75	7
Miami, FL	few clouds	82	6
Sacramento, CA	clear sky	64	6
San Diego, CA	clear sky	71	6
Denver, CO	broken clouds	71	5
San Francisco, CA	scattered clouds	58	4
Tampa Bay, FL	scattered clouds	81	4
Toronto, ON	scattered clouds	67	4
Seattle, WA	clear sky	57	3

Data last updated: 1786449366

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