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	92	10
Atlanta, GA	clear sky	86	10
Cincinnati, OH	clear sky	90	10
Cleveland, OH	clear sky	87	10
Detroit, MI	clear sky	87	10
Houston, TX	broken clouds	94	10
Kansas City, MO	broken clouds	89	10
Miami, FL	light rain	87	10
St. Louis, MO	clear sky	93	10
Tampa, FL	scattered clouds	87	10
Williamsport, PA	clear sky	82	8
Baltimore, MD	clear sky	83	8
Bronx, NY	clear sky	70	8
Chicago (AL), IL	few clouds	80	8
Chicago (NL), IL	scattered clouds	80	8
Milwaukee, WI	clear sky	76	8
Philadelphia, PA	clear sky	80	8
Phoenix, AZ	few clouds	75	8
Pittsburgh, PA	clear sky	84	8
Queens, NY	clear sky	69	8
Toronto, ON	overcast clouds	80	8
Washington, DC	clear sky	83	8
Anaheim, CA	few clouds	72	7
Los Angeles, CA	clear sky	73	7
San Francisco, CA	clear sky	71	6
Minneapolis, MN	overcast clouds	58	5
San Diego, CA	scattered clouds	72	5
Tampa Bay, FL	scattered clouds	87	5
Boston, MA	overcast clouds	58	4
Seattle, WA	overcast clouds	60	4
Denver, CO	overcast clouds	62	3
Las Vegas, NV	broken clouds	56	3
Sacramento, CA	clear sky	72	3

Data last updated: 1791924338

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