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™
Kansas City, MO	clear sky	85	10
Phoenix, AZ	overcast clouds	93	10
St. Louis, MO	few clouds	87	10
Williamsport, PA	overcast clouds	75	8
Anaheim, CA	clear sky	71	8
Arlington, TX	clear sky	82	8
Bronx, NY	overcast clouds	80	8
Cleveland, OH	broken clouds	70	8
Detroit, MI	light rain	70	8
Houston, TX	overcast clouds	83	8
Las Vegas, NV	clear sky	84	8
Los Angeles, CA	clear sky	70	8
Minneapolis, MN	clear sky	80	8
Philadelphia, PA	light rain	78	8
Queens, NY	overcast clouds	80	8
Sacramento, CA	overcast clouds	68	8
Tampa, FL	overcast clouds	79	8
Washington, DC	light rain	83	8
Atlanta, GA	scattered clouds	82	7
Baltimore, MD	heavy intensity rain	82	7
Chicago (AL), IL	clear sky	81	6
Chicago (NL), IL	clear sky	78	6
Cincinnati, OH	scattered clouds	82	6
Pittsburgh, PA	overcast clouds	70	6
Boston, MA	broken clouds	68	5
San Diego, CA	clear sky	69	5
San Francisco, CA	light rain	63	5
Toronto, ON	broken clouds	70	5
Denver, CO	few clouds	79	4
Miami, FL	light rain	83	4
Milwaukee, WI	broken clouds	72	4
Seattle, WA	overcast clouds	62	4
Tampa Bay, FL	overcast clouds	81	4

Data last updated: 1788490567

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