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	88	10
Arlington, TX	clear sky	100	10
Atlanta, GA	scattered clouds	91	10
Baltimore, MD	broken clouds	87	10
Cincinnati, OH	broken clouds	88	10
Cleveland, OH	overcast clouds	85	10
Detroit, MI	overcast clouds	85	10
Houston, TX	clear sky	97	10
Kansas City, MO	scattered clouds	99	10
Las Vegas, NV	clear sky	104	10
Los Angeles, CA	clear sky	91	10
Miami, FL	light rain	86	10
Minneapolis, MN	clear sky	99	10
Phoenix, AZ	clear sky	111	10
Pittsburgh, PA	overcast clouds	86	10
Sacramento, CA	clear sky	91	10
St. Louis, MO	clear sky	98	10
Washington, DC	broken clouds	88	10
Bronx, NY	overcast clouds	82	8
Chicago (AL), IL	heavy intensity rain	79	8
Chicago (NL), IL	heavy intensity rain	80	8
Milwaukee, WI	clear sky	82	8
Philadelphia, PA	light rain	82	8
Queens, NY	overcast clouds	82	8
San Diego, CA	scattered clouds	84	8
San Francisco, CA	clear sky	71	8
Seattle, WA	few clouds	79	8
Tampa, FL	scattered clouds	84	8
Toronto, ON	scattered clouds	79	8
Boston, MA	clear sky	81	7
Denver, CO	broken clouds	90	6
Tampa Bay, FL	scattered clouds	83	4

Data last updated: 1785189400

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