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
Arlington, TX	clear sky	98	10
Atlanta, GA	scattered clouds	88	10
Houston, TX	clear sky	92	10
Las Vegas, NV	overcast clouds	96	10
Phoenix, AZ	clear sky	108	10
Sacramento, CA	broken clouds	92	10
Tampa, FL	few clouds	86	10
Dyersville, IA	few clouds	74	8
Baltimore, MD	light rain	76	8
Boston, MA	overcast clouds	74	8
Chicago (AL), IL	overcast clouds	82	8
Cincinnati, OH	light rain	83	8
Cleveland, OH	overcast clouds	79	8
Denver, CO	broken clouds	79	8
Detroit, MI	broken clouds	83	8
Los Angeles, CA	few clouds	84	8
Milwaukee, WI	clear sky	76	8
Minneapolis, MN	few clouds	78	8
Philadelphia, PA	overcast clouds	69	8
Queens, NY	overcast clouds	72	8
San Diego, CA	clear sky	79	8
San Francisco, CA	broken clouds	69	8
St. Louis, MO	few clouds	87	8
Washington, DC	light rain	77	8
Pittsburgh, PA	overcast clouds	73	7
Toronto, ON	broken clouds	74	7
Chicago (NL), IL	broken clouds	83	6
Bronx, NY	overcast clouds	69	5
Kansas City, MO	broken clouds	83	5
Seattle, WA	clear sky	75	5
Tampa Bay, FL	broken clouds	88	5
Miami, FL	clear sky	84	4

Data last updated: 1786928165

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