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™
Las Vegas, NV	broken clouds	86	10
Phoenix, AZ	scattered clouds	90	10
Tampa, FL	overcast clouds	85	10
Anaheim, CA	clear sky	69	8
Arlington, TX	clear sky	83	8
Atlanta, GA	clear sky	81	8
Boston, MA	scattered clouds	74	8
Chicago (NL), IL	overcast clouds	75	8
Cleveland, OH	clear sky	73	8
Denver, CO	clear sky	80	8
Houston, TX	clear sky	82	8
Kansas City, MO	clear sky	84	8
Minneapolis, MN	broken clouds	75	8
San Diego, CA	few clouds	69	8
St. Louis, MO	clear sky	80	8
Toronto, ON	clear sky	71	8
Washington, DC	scattered clouds	78	8
Bronx, NY	clear sky	74	7
Chicago (AL), IL	overcast clouds	75	7
Milwaukee, WI	broken clouds	71	7
Philadelphia, PA	clear sky	74	7
Queens, NY	clear sky	75	7
Sacramento, CA	overcast clouds	68	7
Baltimore, MD	clear sky	75	6
Cincinnati, OH	clear sky	76	6
Detroit, MI	clear sky	76	6
Miami, FL	light rain	88	6
Pittsburgh, PA	clear sky	71	6
Los Angeles, CA	clear sky	67	5
Tampa Bay, FL	overcast clouds	85	5
San Francisco, CA	overcast clouds	59	4
Seattle, WA	overcast clouds	60	4

Data last updated: 1784555767

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