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	clear sky	90	10
Houston, TX	clear sky	87	10
Las Vegas, NV	clear sky	88	10
Kansas City, MO	clear sky	82	8
Los Angeles, CA	scattered clouds	69	8
Anaheim, CA	few clouds	71	7
Baltimore, MD	clear sky	72	7
Cincinnati, OH	clear sky	79	7
Miami, FL	moderate rain	81	7
Philadelphia, PA	clear sky	73	7
Phoenix, AZ	overcast clouds	80	7
Sacramento, CA	clear sky	64	7
St. Louis, MO	clear sky	80	7
Washington, DC	clear sky	73	7
Boston, MA	clear sky	68	6
Cleveland, OH	overcast clouds	72	6
Denver, CO	overcast clouds	70	6
Williamsport, PA	few clouds	72	5
Atlanta, GA	clear sky	77	5
Bronx, NY	clear sky	74	5
Queens, NY	clear sky	73	5
San Diego, CA	clear sky	71	5
San Francisco, CA	overcast clouds	61	5
Chicago (AL), IL	few clouds	68	4
Chicago (NL), IL	broken clouds	68	4
Detroit, MI	overcast clouds	66	4
Pittsburgh, PA	scattered clouds	75	4
Tampa Bay, FL	clear sky	82	4
Tampa, FL	scattered clouds	81	4
Milwaukee, WI	broken clouds	63	3
Seattle, WA	clear sky	65	3
Toronto, ON	scattered clouds	67	3
Minneapolis, MN	overcast clouds	63	2

Data last updated: 1789613767

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