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	broken clouds	88	10
Denver, CO	overcast clouds	89	10
Houston, TX	overcast clouds	86	10
Kansas City, MO	few clouds	85	10
Las Vegas, NV	few clouds	97	10
Phoenix, AZ	broken clouds	93	10
Sacramento, CA	clear sky	90	10
Anaheim, CA	clear sky	81	8
Atlanta, GA	overcast clouds	80	8
Baltimore, MD	broken clouds	76	8
Boston, MA	overcast clouds	69	8
Bronx, NY	overcast clouds	74	8
Cincinnati, OH	broken clouds	78	8
Detroit, MI	clear sky	73	8
Los Angeles, CA	clear sky	76	8
Philadelphia, PA	heavy intensity rain	76	8
Pittsburgh, PA	overcast clouds	71	8
Queens, NY	overcast clouds	75	8
St. Louis, MO	broken clouds	83	8
Tampa, FL	overcast clouds	80	8
Washington, DC	moderate rain	77	8
Minneapolis, MN	overcast clouds	77	7
San Francisco, CA	clear sky	59	7
Chicago (AL), IL	clear sky	75	6
San Diego, CA	few clouds	73	6
Milwaukee, WI	clear sky	72	5
Chicago (NL), IL	clear sky	76	4
Miami, FL	overcast clouds	83	4
Seattle, WA	clear sky	73	4
Tampa Bay, FL	overcast clouds	80	4
Cleveland, OH	scattered clouds	72	3
Toronto, ON	clear sky	71	3

Data last updated: 1784429765

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