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 Premium provides on-demand HRF forecast data using up to date weather information along with our trained model. Check out a preview below or view the pricing page for more information.

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™
Sacramento, CA	clear sky	93	10
Anaheim, CA	clear sky	85	10
Arlington, TX	scattered clouds	91	10
Chicago (AL), IL	scattered clouds	90	10
Chicago (NL), IL	scattered clouds	90	10
Houston, TX	few clouds	90	10
Los Angeles, CA	clear sky	86	10
Phoenix, AZ	clear sky	109	10
St. Louis, MO	few clouds	86	10
Tampa, FL	broken clouds	86	10
Baltimore, MD	broken clouds	76	8
Cincinnati, OH	clear sky	78	8
Cleveland, OH	broken clouds	77	8
Detroit, MI	clear sky	82	8
Milwaukee, WI	clear sky	85	8
Minneapolis, MN	clear sky	78	8
Philadelphia, PA	overcast clouds	75	8
Pittsburgh, PA	overcast clouds	75	8
San Diego, CA	few clouds	79	8
San Francisco, CA	clear sky	66	8
Seattle, WA	scattered clouds	74	8
Toronto, ON	scattered clouds	73	8
Washington, DC	broken clouds	78	8
Boston, MA	overcast clouds	67	7
Queens, NY	overcast clouds	66	7
Atlanta, GA	overcast clouds	72	6
Bronx, NY	overcast clouds	66	5
Kansas City, MO	few clouds	71	5
Miami, FL	broken clouds	84	5
Denver, CO	broken clouds	64	4

Data last updated: 1750204567

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