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	few clouds	92	10
Houston, TX	clear sky	88	10
Las Vegas, NV	clear sky	89	10
Anaheim, CA	clear sky	73	8
Kansas City, MO	clear sky	83	8
Miami, FL	light rain	83	8
Phoenix, AZ	overcast clouds	80	8
Sacramento, CA	clear sky	68	8
St. Louis, MO	clear sky	80	8
Baltimore, MD	clear sky	74	7
Los Angeles, CA	few clouds	71	7
Philadelphia, PA	clear sky	74	7
San Francisco, CA	broken clouds	62	7
Washington, DC	clear sky	75	7
Boston, MA	clear sky	68	6
Cincinnati, OH	clear sky	81	6
San Diego, CA	clear sky	72	6
Williamsport, PA	few clouds	73	5
Bronx, NY	clear sky	74	5
Denver, CO	overcast clouds	71	5
Pittsburgh, PA	scattered clouds	76	5
Queens, NY	clear sky	73	5
Atlanta, GA	clear sky	78	4
Chicago (AL), IL	broken clouds	68	4
Cleveland, OH	overcast clouds	73	4
Detroit, MI	scattered clouds	66	4
Seattle, WA	clear sky	69	4
Tampa Bay, FL	clear sky	84	4
Tampa, FL	clear sky	82	4
Chicago (NL), IL	overcast clouds	68	3
Milwaukee, WI	overcast clouds	62	3
Minneapolis, MN	light rain	65	2
Toronto, ON	scattered clouds	69	2

Data last updated: 1789610166

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