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	89	10
Denver, CO	scattered clouds	87	10
Houston, TX	broken clouds	89	10
Kansas City, MO	clear sky	88	10
Las Vegas, NV	few clouds	95	10
Minneapolis, MN	clear sky	90	10
Phoenix, AZ	clear sky	104	10
Tampa, FL	overcast clouds	90	10
Anaheim, CA	clear sky	75	8
Atlanta, GA	overcast clouds	79	8
Baltimore, MD	broken clouds	77	8
Chicago (NL), IL	overcast clouds	72	8
Cincinnati, OH	clear sky	79	8
Detroit, MI	few clouds	80	8
Los Angeles, CA	clear sky	76	8
Miami, FL	light rain	90	8
Philadelphia, PA	clear sky	79	8
Pittsburgh, PA	broken clouds	77	8
Queens, NY	clear sky	78	8
San Diego, CA	clear sky	74	8
Seattle, WA	scattered clouds	63	8
St. Louis, MO	broken clouds	77	8
Toronto, ON	overcast clouds	74	8
Washington, DC	broken clouds	78	7
Bronx, NY	clear sky	78	6
Cleveland, OH	few clouds	76	6
Milwaukee, WI	overcast clouds	72	6
San Francisco, CA	few clouds	63	6
Boston, MA	clear sky	79	5
Chicago (AL), IL	overcast clouds	72	5
Sacramento, CA	broken clouds	69	5
Tampa Bay, FL	overcast clouds	90	4

Data last updated: 1784994966

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