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	80	8
Chicago (AL), IL	overcast clouds	73	8
Chicago (NL), IL	overcast clouds	72	8
Cleveland, OH	overcast clouds	74	8
Houston, TX	overcast clouds	78	8
Philadelphia, PA	broken clouds	66	8
St. Louis, MO	clear sky	74	8
Washington, DC	clear sky	73	8
Pittsburgh, PA	overcast clouds	75	7
Boston, MA	broken clouds	57	5
Cincinnati, OH	broken clouds	76	5
Sacramento, CA	clear sky	74	4
Anaheim, CA	overcast clouds	58	4
Detroit, MI	few clouds	72	4
Los Angeles, CA	overcast clouds	56	4
Queens, NY	broken clouds	54	4
San Francisco, CA	few clouds	54	4
Seattle, WA	broken clouds	62	4
Toronto, ON	moderate rain	57	4
Baltimore, MD	overcast clouds	66	3
Bronx, NY	clear sky	55	3
Kansas City, MO	overcast clouds	54	3
Milwaukee, WI	overcast clouds	54	3
Phoenix, AZ	overcast clouds	59	3
San Diego, CA	overcast clouds	58	3
Tampa, FL	clear sky	75	2
Atlanta, GA	clear sky	68	1
Denver, CO	snow	31	1
Miami, FL	scattered clouds	76	1
Minneapolis, MN	overcast clouds	48	1

Data last updated: 1745031368

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