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	broken clouds	93	10
Arlington, TX	clear sky	101	10
Atlanta, GA	few clouds	91	10
Denver, CO	overcast clouds	94	10
Houston, TX	scattered clouds	95	10
Kansas City, MO	scattered clouds	86	10
Las Vegas, NV	overcast clouds	99	10
Los Angeles, CA	few clouds	94	10
Phoenix, AZ	overcast clouds	108	10
San Diego, CA	broken clouds	89	10
Tampa, FL	moderate rain	89	10
Washington, DC	broken clouds	88	9
Williamsport, PA	overcast clouds	79	8
Baltimore, MD	broken clouds	85	8
Boston, MA	overcast clouds	84	8
Bronx, NY	overcast clouds	84	8
Chicago (AL), IL	few clouds	82	8
Chicago (NL), IL	clear sky	82	8
Cincinnati, OH	clear sky	85	8
Detroit, MI	scattered clouds	77	8
Miami, FL	few clouds	92	8
Milwaukee, WI	clear sky	82	8
Minneapolis, MN	broken clouds	83	8
Philadelphia, PA	few clouds	84	8
Pittsburgh, PA	overcast clouds	78	8
Queens, NY	overcast clouds	83	8
Sacramento, CA	overcast clouds	80	8
Toronto, ON	overcast clouds	71	8
Seattle, WA	overcast clouds	68	7
St. Louis, MO	clear sky	87	7
Tampa Bay, FL	broken clouds	88	5
Cleveland, OH	clear sky	76	4
San Francisco, CA	overcast clouds	62	4

Data last updated: 1787946968

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