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	clear sky	91	10
Houston, TX	few clouds	86	10
Las Vegas, NV	clear sky	93	10
Phoenix, AZ	overcast clouds	98	10
Anaheim, CA	clear sky	76	8
Atlanta, GA	few clouds	77	8
Bronx, NY	broken clouds	74	8
Los Angeles, CA	clear sky	72	8
Pittsburgh, PA	scattered clouds	70	8
Queens, NY	scattered clouds	75	8
Tampa, FL	overcast clouds	81	8
Boston, MA	scattered clouds	67	7
Cincinnati, OH	few clouds	73	7
Miami, FL	light rain	78	7
Sacramento, CA	clear sky	76	7
San Francisco, CA	broken clouds	65	7
Washington, DC	overcast clouds	78	7
Baltimore, MD	few clouds	76	6
Denver, CO	overcast clouds	82	6
Philadelphia, PA	clear sky	73	6
San Diego, CA	clear sky	71	6
Williamsport, PA	scattered clouds	69	5
Chicago (AL), IL	clear sky	61	5
Detroit, MI	scattered clouds	63	5
Milwaukee, WI	clear sky	56	4
Seattle, WA	overcast clouds	60	4
Tampa Bay, FL	broken clouds	82	4
Chicago (NL), IL	clear sky	61	3
Cleveland, OH	broken clouds	71	3
Kansas City, MO	broken clouds	73	3
Minneapolis, MN	clear sky	58	3
St. Louis, MO	clear sky	74	3
Toronto, ON	broken clouds	66	3

Data last updated: 1789354564

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