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	few clouds	90	10
Phoenix, AZ	clear sky	87	10
Boston, MA	overcast clouds	70	8
Cincinnati, OH	clear sky	80	8
Houston, TX	overcast clouds	83	8
Kansas City, MO	clear sky	81	8
Las Vegas, NV	clear sky	84	8
Los Angeles, CA	clear sky	69	8
Miami, FL	light rain	80	8
Philadelphia, PA	overcast clouds	75	8
Pittsburgh, PA	broken clouds	74	8
Queens, NY	overcast clouds	77	8
St. Louis, MO	clear sky	83	8
Anaheim, CA	clear sky	72	7
Baltimore, MD	overcast clouds	76	7
Bronx, NY	overcast clouds	78	7
Sacramento, CA	clear sky	71	7
San Diego, CA	clear sky	70	6
Williamsport, PA	overcast clouds	72	5
Atlanta, GA	clear sky	77	5
Denver, CO	broken clouds	70	5
Detroit, MI	overcast clouds	66	5
San Francisco, CA	clear sky	62	5
Washington, DC	overcast clouds	76	5
Chicago (AL), IL	overcast clouds	68	4
Tampa Bay, FL	clear sky	82	4
Tampa, FL	clear sky	80	4
Cleveland, OH	overcast clouds	71	3
Milwaukee, WI	scattered clouds	63	3
Seattle, WA	clear sky	65	3
Toronto, ON	clear sky	67	3
Chicago (NL), IL	overcast clouds	68	2
Minneapolis, MN	broken clouds	61	2

Data last updated: 1789700166

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