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	98	10
Cincinnati, OH	clear sky	92	10
Houston, TX	scattered clouds	96	10
Kansas City, MO	clear sky	92	10
Las Vegas, NV	clear sky	88	10
Phoenix, AZ	broken clouds	96	10
St. Louis, MO	clear sky	97	10
Tampa, FL	overcast clouds	89	10
Atlanta, GA	few clouds	89	9
Anaheim, CA	clear sky	78	8
Chicago (AL), IL	overcast clouds	82	8
Chicago (NL), IL	overcast clouds	82	8
Cleveland, OH	overcast clouds	82	8
Los Angeles, CA	clear sky	77	8
Milwaukee, WI	overcast clouds	73	8
Minneapolis, MN	clear sky	68	8
San Diego, CA	few clouds	77	8
San Francisco, CA	few clouds	66	8
Toronto, ON	overcast clouds	71	8
Denver, CO	clear sky	69	7
Miami, FL	broken clouds	91	7
Sacramento, CA	clear sky	79	7
Williamsport, PA	clear sky	72	6
Detroit, MI	overcast clouds	74	6
Philadelphia, PA	clear sky	77	6
Tampa Bay, FL	scattered clouds	90	6
Baltimore, MD	clear sky	77	5
Pittsburgh, PA	clear sky	81	5
Queens, NY	clear sky	72	5
Washington, DC	clear sky	78	5
Seattle, WA	overcast clouds	60	4
Bronx, NY	few clouds	72	3
Boston, MA	scattered clouds	69	2

Data last updated: 1789498567

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