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	86	10
Atlanta, GA	overcast clouds	88	10
Las Vegas, NV	clear sky	101	10
Los Angeles, CA	clear sky	89	10
Phoenix, AZ	clear sky	108	10
Tampa, FL	overcast clouds	95	10
Houston, TX	overcast clouds	91	9
Miami, FL	clear sky	91	9
Arlington, TX	clear sky	95	8
Boston, MA	clear sky	80	8
Detroit, MI	clear sky	77	8
Minneapolis, MN	scattered clouds	79	8
Sacramento, CA	clear sky	84	8
San Diego, CA	clear sky	82	8
San Francisco, CA	clear sky	68	8
Seattle, WA	scattered clouds	72	8
Toronto, ON	clear sky	76	8
Bronx, NY	clear sky	80	7
Denver, CO	few clouds	84	7
Milwaukee, WI	scattered clouds	78	7
Philadelphia, PA	clear sky	82	7
Queens, NY	clear sky	80	7
Baltimore, MD	clear sky	82	6
Cincinnati, OH	clear sky	77	6
Kansas City, MO	scattered clouds	76	6
Pittsburgh, PA	clear sky	76	6
St. Louis, MO	broken clouds	79	6
Washington, DC	clear sky	83	6
Tampa Bay, FL	few clouds	93	5
Chicago (AL), IL	clear sky	76	4
Chicago (NL), IL	clear sky	76	4
Cleveland, OH	clear sky	76	4

Data last updated: 1784832966

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