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	96	10
Arlington, TX	scattered clouds	108	10
Atlanta, GA	few clouds	89	10
Denver, CO	scattered clouds	91	10
Houston, TX	clear sky	101	10
Las Vegas, NV	clear sky	102	10
Los Angeles, CA	clear sky	94	10
Phoenix, AZ	broken clouds	103	10
Sacramento, CA	scattered clouds	90	10
San Diego, CA	scattered clouds	88	10
Tampa, FL	broken clouds	86	10
Williamsport, PA	overcast clouds	70	8
Baltimore, MD	scattered clouds	81	8
Boston, MA	broken clouds	82	8
Bronx, NY	broken clouds	80	8
Cincinnati, OH	few clouds	79	8
Detroit, MI	overcast clouds	75	8
Kansas City, MO	clear sky	85	8
Minneapolis, MN	scattered clouds	83	8
Philadelphia, PA	overcast clouds	80	8
Pittsburgh, PA	broken clouds	73	8
Queens, NY	broken clouds	80	8
San Francisco, CA	few clouds	71	8
Washington, DC	scattered clouds	83	8
Chicago (AL), IL	few clouds	76	7
Cleveland, OH	few clouds	72	7
Milwaukee, WI	broken clouds	75	7
Toronto, ON	overcast clouds	70	7
Miami, FL	light rain	91	6
St. Louis, MO	overcast clouds	84	6
Seattle, WA	scattered clouds	76	5
Tampa Bay, FL	scattered clouds	89	5
Chicago (NL), IL	few clouds	74	4

Data last updated: 1787604966

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