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	88	10
Arlington, TX	clear sky	95	10
Houston, TX	clear sky	87	10
Kansas City, MO	few clouds	87	10
Las Vegas, NV	overcast clouds	96	10
Phoenix, AZ	scattered clouds	107	10
Sacramento, CA	clear sky	85	10
Chicago (NL), IL	overcast clouds	76	8
Cincinnati, OH	overcast clouds	74	8
Los Angeles, CA	clear sky	83	8
San Diego, CA	clear sky	83	8
San Francisco, CA	clear sky	67	8
St. Louis, MO	overcast clouds	80	8
Toronto, ON	light rain	73	8
Washington, DC	clear sky	74	7
Bronx, NY	clear sky	72	6
Detroit, MI	overcast clouds	75	6
Milwaukee, WI	overcast clouds	70	6
Baltimore, MD	few clouds	71	5
Boston, MA	clear sky	64	5
Cleveland, OH	overcast clouds	71	5
Miami, FL	light rain	81	5
Pittsburgh, PA	overcast clouds	70	5
Queens, NY	clear sky	73	5
Seattle, WA	overcast clouds	65	5
Tampa Bay, FL	overcast clouds	78	5
Williamsport, PA	overcast clouds	64	4
Atlanta, GA	scattered clouds	78	4
Chicago (AL), IL	overcast clouds	76	4
Denver, CO	broken clouds	78	4
Minneapolis, MN	overcast clouds	76	4
Philadelphia, PA	clear sky	68	4
Tampa, FL	overcast clouds	76	4

Data last updated: 1788054965

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