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	87	10
Arlington, TX	clear sky	99	10
Atlanta, GA	clear sky	88	10
Chicago (AL), IL	overcast clouds	86	10
Chicago (NL), IL	overcast clouds	86	10
Cincinnati, OH	clear sky	85	10
Detroit, MI	clear sky	86	10
Houston, TX	overcast clouds	97	10
Las Vegas, NV	clear sky	101	10
Los Angeles, CA	clear sky	86	10
Miami, FL	overcast clouds	96	10
Milwaukee, WI	overcast clouds	88	10
Minneapolis, MN	overcast clouds	90	10
Phoenix, AZ	clear sky	109	10
Sacramento, CA	clear sky	91	10
Kansas City, MO	overcast clouds	81	8
Pittsburgh, PA	clear sky	82	8
San Diego, CA	few clouds	83	8
San Francisco, CA	few clouds	68	8
Seattle, WA	clear sky	74	8
St. Louis, MO	overcast clouds	88	8
Tampa, FL	moderate rain	79	8
Cleveland, OH	clear sky	81	7
Denver, CO	clear sky	95	7
Baltimore, MD	broken clouds	80	5
Philadelphia, PA	overcast clouds	80	5
Tampa Bay, FL	light rain	79	5
Toronto, ON	clear sky	83	5
Boston, MA	overcast clouds	71	4
Bronx, NY	broken clouds	74	4
Queens, NY	broken clouds	74	4
Washington, DC	scattered clouds	84	4

Data last updated: 1785441366

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