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	overcast clouds	95	10
Houston, TX	scattered clouds	87	10
Las Vegas, NV	clear sky	99	10
Phoenix, AZ	overcast clouds	105	10
Sacramento, CA	clear sky	90	10
Anaheim, CA	clear sky	82	8
Atlanta, GA	clear sky	80	8
Bronx, NY	overcast clouds	78	8
Los Angeles, CA	clear sky	84	8
Queens, NY	broken clouds	79	8
Boston, MA	overcast clouds	73	7
Cleveland, OH	overcast clouds	72	7
Denver, CO	clear sky	80	7
Miami, FL	light rain	81	7
Philadelphia, PA	few clouds	75	7
San Diego, CA	scattered clouds	78	7
Tampa, FL	overcast clouds	85	7
Cincinnati, OH	broken clouds	74	6
Pittsburgh, PA	overcast clouds	73	6
Seattle, WA	clear sky	78	6
Williamsport, PA	broken clouds	69	5
Baltimore, MD	clear sky	76	5
Chicago (AL), IL	overcast clouds	72	5
Detroit, MI	broken clouds	71	5
Kansas City, MO	clear sky	73	5
Minneapolis, MN	broken clouds	69	5
San Francisco, CA	clear sky	59	5
St. Louis, MO	scattered clouds	76	5
Tampa Bay, FL	overcast clouds	85	5
Washington, DC	scattered clouds	76	5
Chicago (NL), IL	overcast clouds	71	4
Milwaukee, WI	clear sky	67	4
Toronto, ON	broken clouds	67	3

Data last updated: 1787194566

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