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	99	10
Arlington, TX	overcast clouds	108	10
Atlanta, GA	few clouds	89	10
Denver, CO	overcast clouds	88	10
Houston, TX	scattered clouds	100	10
Las Vegas, NV	clear sky	105	10
Los Angeles, CA	clear sky	95	10
Phoenix, AZ	clear sky	112	10
Sacramento, CA	overcast clouds	96	10
San Diego, CA	broken clouds	92	10
Williamsport, PA	light rain	71	8
Baltimore, MD	clear sky	83	8
Bronx, NY	clear sky	81	8
Chicago (AL), IL	broken clouds	75	8
Cincinnati, OH	scattered clouds	79	8
Cleveland, OH	scattered clouds	71	8
Detroit, MI	overcast clouds	70	8
Milwaukee, WI	scattered clouds	74	8
Philadelphia, PA	clear sky	81	8
Pittsburgh, PA	broken clouds	73	8
Queens, NY	few clouds	81	8
San Francisco, CA	overcast clouds	75	8
St. Louis, MO	broken clouds	81	8
Tampa, FL	overcast clouds	77	8
Washington, DC	clear sky	84	8
Boston, MA	overcast clouds	71	7
Minneapolis, MN	few clouds	80	7
Seattle, WA	overcast clouds	72	7
Chicago (NL), IL	broken clouds	75	6
Miami, FL	light rain	83	6
Kansas City, MO	moderate rain	76	5
Tampa Bay, FL	overcast clouds	75	5
Toronto, ON	overcast clouds	67	4

Data last updated: 1787525765

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