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	clear sky	88	10
Phoenix, AZ	clear sky	91	10
Arlington, TX	clear sky	79	8
Atlanta, GA	broken clouds	73	8
Chicago (AL), IL	overcast clouds	72	8
Chicago (NL), IL	overcast clouds	73	8
Cleveland, OH	clear sky	67	8
Denver, CO	overcast clouds	74	8
Houston, TX	few clouds	79	8
Kansas City, MO	overcast clouds	79	8
Miami, FL	light rain	80	8
Milwaukee, WI	broken clouds	73	8
St. Louis, MO	broken clouds	78	8
Tampa, FL	broken clouds	82	8
Anaheim, CA	scattered clouds	70	7
Cincinnati, OH	scattered clouds	70	7
Detroit, MI	clear sky	71	7
Los Angeles, CA	broken clouds	69	7
Minneapolis, MN	broken clouds	74	7
San Diego, CA	light rain	71	7
San Francisco, CA	few clouds	59	7
Baltimore, MD	overcast clouds	66	6
Bronx, NY	clear sky	69	6
Sacramento, CA	clear sky	65	6
Toronto, ON	scattered clouds	68	6
Pittsburgh, PA	clear sky	62	5
Seattle, WA	overcast clouds	63	5
Washington, DC	scattered clouds	66	5
Philadelphia, PA	clear sky	64	4
Queens, NY	clear sky	68	4
Tampa Bay, FL	broken clouds	81	4
Boston, MA	few clouds	59	3

Data last updated: 1785066965

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