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	clear sky	98	10
Houston, TX	scattered clouds	95	10
Las Vegas, NV	clear sky	108	10
Phoenix, AZ	scattered clouds	104	10
Sacramento, CA	clear sky	99	10
Seattle, WA	clear sky	86	10
Anaheim, CA	clear sky	84	8
Baltimore, MD	scattered clouds	83	8
Boston, MA	broken clouds	80	8
Bronx, NY	broken clouds	77	8
Chicago (AL), IL	broken clouds	78	8
Cincinnati, OH	scattered clouds	83	8
Cleveland, OH	scattered clouds	80	8
Denver, CO	clear sky	85	8
Los Angeles, CA	clear sky	84	8
Minneapolis, MN	clear sky	78	8
Philadelphia, PA	scattered clouds	79	8
Queens, NY	scattered clouds	78	8
San Diego, CA	scattered clouds	79	8
San Francisco, CA	clear sky	68	8
Toronto, ON	clear sky	82	8
Washington, DC	broken clouds	84	8
Atlanta, GA	few clouds	76	7
Chicago (NL), IL	broken clouds	79	7
Kansas City, MO	broken clouds	80	7
Milwaukee, WI	overcast clouds	74	7
St. Louis, MO	few clouds	83	7
Detroit, MI	clear sky	83	6
Miami, FL	broken clouds	83	6
Pittsburgh, PA	scattered clouds	72	5
Tampa, FL	overcast clouds	81	5
Tampa Bay, FL	overcast clouds	82	4

Data last updated: 1785974166

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