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	92	10
Denver, CO	scattered clouds	92	10
Houston, TX	broken clouds	91	10
Kansas City, MO	clear sky	91	10
Las Vegas, NV	few clouds	97	10
Minneapolis, MN	clear sky	90	10
Phoenix, AZ	clear sky	107	10
Tampa, FL	overcast clouds	93	10
Anaheim, CA	few clouds	79	8
Atlanta, GA	overcast clouds	83	8
Baltimore, MD	broken clouds	79	8
Bronx, NY	clear sky	79	8
Chicago (NL), IL	overcast clouds	72	8
Cincinnati, OH	clear sky	82	8
Detroit, MI	scattered clouds	81	8
Los Angeles, CA	clear sky	80	8
Philadelphia, PA	clear sky	81	8
Pittsburgh, PA	scattered clouds	80	8
Queens, NY	clear sky	80	8
San Diego, CA	clear sky	78	8
San Francisco, CA	scattered clouds	66	8
Seattle, WA	scattered clouds	65	8
St. Louis, MO	broken clouds	82	8
Toronto, ON	overcast clouds	76	8
Washington, DC	broken clouds	80	8
Chicago (AL), IL	overcast clouds	75	7
Miami, FL	light rain	92	7
Sacramento, CA	broken clouds	73	7
Boston, MA	clear sky	80	6
Milwaukee, WI	overcast clouds	74	6
Cleveland, OH	few clouds	78	5
Tampa Bay, FL	overcast clouds	91	4

Data last updated: 1784998566

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