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™
Anaheim, CA	clear sky	89	10
Los Angeles, CA	clear sky	89	10
Phoenix, AZ	clear sky	88	10
San Diego, CA	clear sky	91	10
Sacramento, CA	clear sky	84	7
Houston, TX	overcast clouds	82	6
San Francisco, CA	clear sky	74	6
Tampa, FL	overcast clouds	82	6
Arlington, TX	overcast clouds	72	5
Atlanta, GA	broken clouds	74	5
Las Vegas, NV	clear sky	82	5
Miami, FL	overcast clouds	83	5
Minneapolis, MN	clear sky	58	5
Tampa Bay, FL	overcast clouds	83	5
Chicago (NL), IL	clear sky	60	4
Kansas City, MO	clear sky	61	4
Baltimore, MD	overcast clouds	63	3
Chicago (AL), IL	clear sky	61	3
Cincinnati, OH	overcast clouds	57	3
Milwaukee, WI	few clouds	58	3
Seattle, WA	clear sky	60	3
St. Louis, MO	overcast clouds	61	3
Washington, DC	overcast clouds	62	3
Williamsport, PA	clear sky	53	2
Boston, MA	clear sky	52	2
Bronx, NY	clear sky	62	2
Cleveland, OH	clear sky	52	2
Denver, CO	clear sky	66	2
Detroit, MI	few clouds	53	2
Philadelphia, PA	few clouds	61	2
Pittsburgh, PA	broken clouds	53	2
Queens, NY	clear sky	63	2
Toronto, ON	clear sky	57	1

Data last updated: 1791082566

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