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	91	10
Houston, TX	overcast clouds	87	10
Las Vegas, NV	clear sky	101	10
Phoenix, AZ	few clouds	103	10
Sacramento, CA	clear sky	91	10
Anaheim, CA	clear sky	74	8
Chicago (AL), IL	scattered clouds	80	8
Chicago (NL), IL	broken clouds	80	8
Kansas City, MO	light rain	81	8
Los Angeles, CA	clear sky	74	8
Miami, FL	overcast clouds	77	8
Milwaukee, WI	scattered clouds	76	8
Philadelphia, PA	overcast clouds	76	8
Queens, NY	overcast clouds	75	8
Washington, DC	overcast clouds	79	8
Baltimore, MD	overcast clouds	78	7
Boston, MA	clear sky	70	7
Cincinnati, OH	clear sky	74	7
Denver, CO	scattered clouds	67	7
San Francisco, CA	few clouds	61	7
Tampa, FL	light rain	78	7
Atlanta, GA	broken clouds	76	6
Bronx, NY	overcast clouds	74	6
Minneapolis, MN	broken clouds	66	6
St. Louis, MO	clear sky	76	6
Pittsburgh, PA	few clouds	76	5
San Diego, CA	scattered clouds	72	5
Seattle, WA	clear sky	74	5
Toronto, ON	clear sky	69	5
Cleveland, OH	clear sky	68	4
Detroit, MI	clear sky	71	4
Tampa Bay, FL	light rain	80	4

Data last updated: 1785898570

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