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	96	10
Atlanta, GA	broken clouds	93	10
Baltimore, MD	clear sky	87	10
Cincinnati, OH	broken clouds	86	10
Houston, TX	clear sky	95	10
Kansas City, MO	broken clouds	87	10
Phoenix, AZ	broken clouds	100	10
St. Louis, MO	overcast clouds	86	10
Tampa, FL	broken clouds	92	10
Washington, DC	scattered clouds	88	10
Miami, FL	clear sky	92	9
Philadelphia, PA	scattered clouds	86	9
Anaheim, CA	few clouds	78	8
Boston, MA	overcast clouds	79	8
Bronx, NY	clear sky	82	8
Chicago (NL), IL	light rain	76	8
Cleveland, OH	overcast clouds	78	8
Las Vegas, NV	clear sky	80	8
Los Angeles, CA	few clouds	76	8
Pittsburgh, PA	scattered clouds	84	8
Queens, NY	clear sky	82	8
Sacramento, CA	clear sky	72	8
Chicago (AL), IL	overcast clouds	76	7
Minneapolis, MN	overcast clouds	74	7
San Francisco, CA	overcast clouds	63	7
Seattle, WA	broken clouds	67	7
Toronto, ON	clear sky	74	7
Denver, CO	overcast clouds	81	6
San Diego, CA	overcast clouds	78	6
Dyersville, IA	overcast clouds	74	5
Milwaukee, WI	overcast clouds	81	5
Detroit, MI	broken clouds	75	4
Tampa Bay, FL	broken clouds	92	4

Data last updated: 1786816565

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