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	90	10
Arlington, TX	broken clouds	96	10
Houston, TX	scattered clouds	91	10
Las Vegas, NV	scattered clouds	102	10
Los Angeles, CA	clear sky	89	10
Phoenix, AZ	clear sky	112	10
Sacramento, CA	overcast clouds	94	10
San Diego, CA	clear sky	86	10
Atlanta, GA	clear sky	81	8
Boston, MA	broken clouds	71	8
Kansas City, MO	overcast clouds	82	8
Minneapolis, MN	overcast clouds	79	8
San Francisco, CA	broken clouds	67	8
Seattle, WA	clear sky	81	8
Tampa, FL	clear sky	83	8
Bronx, NY	clear sky	74	7
Chicago (NL), IL	overcast clouds	74	7
Pittsburgh, PA	overcast clouds	70	7
Baltimore, MD	scattered clouds	72	6
Chicago (AL), IL	overcast clouds	74	6
Philadelphia, PA	overcast clouds	71	6
Toronto, ON	scattered clouds	71	6
Washington, DC	broken clouds	73	6
Williamsport, PA	clear sky	67	5
Cincinnati, OH	broken clouds	72	5
Cleveland, OH	overcast clouds	68	5
Miami, FL	light rain	85	5
Queens, NY	clear sky	75	5
St. Louis, MO	scattered clouds	82	5
Denver, CO	overcast clouds	77	4
Detroit, MI	overcast clouds	73	4
Milwaukee, WI	clear sky	72	4
Tampa Bay, FL	clear sky	84	4

Data last updated: 1787705767

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