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™
Anaheim, CA	clear sky	86	10
Cincinnati, OH	overcast clouds	88	10
Houston, TX	overcast clouds	90	10
Las Vegas, NV	clear sky	88	10
Phoenix, AZ	clear sky	92	10
Sacramento, CA	clear sky	90	10
St. Louis, MO	overcast clouds	89	10
Washington, DC	clear sky	86	10
Atlanta, GA	few clouds	85	9
Williamsport, PA	scattered clouds	76	8
Arlington, TX	overcast clouds	74	8
Baltimore, MD	clear sky	84	8
Boston, MA	broken clouds	73	8
Bronx, NY	few clouds	76	8
Chicago (NL), IL	light rain	65	8
Cleveland, OH	broken clouds	84	8
Detroit, MI	overcast clouds	78	8
Los Angeles, CA	clear sky	84	8
Philadelphia, PA	broken clouds	82	8
Pittsburgh, PA	scattered clouds	84	8
Queens, NY	few clouds	75	8
San Diego, CA	clear sky	82	8
San Francisco, CA	scattered clouds	72	8
Toronto, ON	overcast clouds	72	8
Denver, CO	few clouds	71	7
Miami, FL	light rain	78	7
Milwaukee, WI	light rain	63	7
Minneapolis, MN	overcast clouds	66	7
Tampa, FL	overcast clouds	83	7
Chicago (AL), IL	moderate rain	66	6
Seattle, WA	overcast clouds	66	5
Tampa Bay, FL	overcast clouds	85	5
Kansas City, MO	light rain	72	4

Data last updated: 1790888166

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