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	94	10
Arlington, TX	clear sky	90	10
Houston, TX	clear sky	91	10
Kansas City, MO	clear sky	85	10
Las Vegas, NV	clear sky	93	10
Los Angeles, CA	clear sky	92	10
Miami, FL	light rain	88	10
Phoenix, AZ	clear sky	101	10
Sacramento, CA	clear sky	95	10
San Diego, CA	clear sky	88	10
St. Louis, MO	clear sky	85	10
Williamsport, PA	clear sky	70	8
Atlanta, GA	overcast clouds	83	8
Bronx, NY	clear sky	74	8
Chicago (AL), IL	clear sky	71	8
Cincinnati, OH	clear sky	79	8
Detroit, MI	clear sky	69	8
Milwaukee, WI	broken clouds	70	8
Pittsburgh, PA	few clouds	71	8
San Francisco, CA	scattered clouds	76	8
Tampa, FL	overcast clouds	78	8
Washington, DC	clear sky	80	8
Baltimore, MD	clear sky	79	7
Boston, MA	clear sky	71	7
Denver, CO	few clouds	84	7
Philadelphia, PA	clear sky	76	7
Chicago (NL), IL	clear sky	71	6
Seattle, WA	broken clouds	68	6
Minneapolis, MN	overcast clouds	65	5
Queens, NY	clear sky	74	5
Tampa Bay, FL	light rain	78	5
Cleveland, OH	clear sky	68	4
Toronto, ON	broken clouds	65	4

Data last updated: 1791492968

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