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	90	10
Atlanta, GA	broken clouds	88	10
Cincinnati, OH	broken clouds	86	10
Houston, TX	clear sky	90	10
Kansas City, MO	scattered clouds	86	10
Phoenix, AZ	broken clouds	93	10
Tampa, FL	broken clouds	90	10
Washington, DC	few clouds	86	10
Miami, FL	clear sky	91	9
Anaheim, CA	scattered clouds	72	8
Baltimore, MD	clear sky	84	8
Bronx, NY	few clouds	80	8
Chicago (NL), IL	overcast clouds	74	8
Cleveland, OH	overcast clouds	76	8
Los Angeles, CA	scattered clouds	70	8
Minneapolis, MN	overcast clouds	70	8
Pittsburgh, PA	few clouds	79	8
St. Louis, MO	overcast clouds	84	8
Denver, CO	overcast clouds	75	7
Philadelphia, PA	scattered clouds	83	7
Toronto, ON	clear sky	72	7
Las Vegas, NV	clear sky	75	6
Queens, NY	few clouds	80	6
Tampa Bay, FL	broken clouds	90	6
Dyersville, IA	overcast clouds	73	5
Boston, MA	overcast clouds	77	5
Detroit, MI	broken clouds	73	5
Milwaukee, WI	overcast clouds	78	5
Sacramento, CA	clear sky	63	5
San Diego, CA	broken clouds	73	5
San Francisco, CA	overcast clouds	60	5
Seattle, WA	broken clouds	61	5
Chicago (AL), IL	light rain	74	3

Data last updated: 1786809366

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