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	101	10
Atlanta, GA	few clouds	93	10
Chicago (AL), IL	broken clouds	85	10
Cincinnati, OH	broken clouds	88	10
Houston, TX	clear sky	95	10
Las Vegas, NV	clear sky	92	10
Phoenix, AZ	overcast clouds	103	10
St. Louis, MO	overcast clouds	90	10
Tampa, FL	scattered clouds	93	10
Dyersville, IA	scattered clouds	80	8
Anaheim, CA	scattered clouds	81	8
Baltimore, MD	overcast clouds	73	8
Boston, MA	scattered clouds	81	8
Bronx, NY	overcast clouds	78	8
Chicago (NL), IL	broken clouds	84	8
Cleveland, OH	moderate rain	78	8
Detroit, MI	overcast clouds	79	8
Kansas City, MO	scattered clouds	85	8
Los Angeles, CA	few clouds	80	8
Miami, FL	scattered clouds	92	8
Milwaukee, WI	broken clouds	85	8
Minneapolis, MN	broken clouds	77	8
Philadelphia, PA	overcast clouds	77	8
Pittsburgh, PA	overcast clouds	84	8
Queens, NY	light rain	79	8
Sacramento, CA	broken clouds	79	8
San Francisco, CA	broken clouds	65	8
Toronto, ON	overcast clouds	77	8
Washington, DC	light rain	75	8
Denver, CO	few clouds	80	7
San Diego, CA	clear sky	79	7
Seattle, WA	broken clouds	66	4
Tampa Bay, FL	broken clouds	91	4

Data last updated: 1786906565

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