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 Premium provides on-demand HRF forecast data using up to date weather information along with our trained model. Check out a preview below or view the pricing page for more information.

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™
Sacramento, CA	clear sky	92	10
Arlington, TX	clear sky	89	10
Houston, TX	clear sky	88	10
Phoenix, AZ	clear sky	103	10
Anaheim, CA	clear sky	82	8
Atlanta, GA	clear sky	75	8
Chicago (AL), IL	broken clouds	68	8
Los Angeles, CA	clear sky	82	8
Miami, FL	overcast clouds	80	8
Philadelphia, PA	broken clouds	73	8
Queens, NY	broken clouds	72	8
San Diego, CA	scattered clouds	77	8
San Francisco, CA	few clouds	63	8
Tampa, FL	overcast clouds	79	8
Washington, DC	clear sky	75	8
Baltimore, MD	broken clouds	74	7
Boston, MA	broken clouds	70	7
Bronx, NY	clear sky	73	7
Detroit, MI	scattered clouds	67	7
Milwaukee, WI	clear sky	60	7
Seattle, WA	clear sky	84	7
Cincinnati, OH	clear sky	68	6
Pittsburgh, PA	scattered clouds	72	6
Kansas City, MO	clear sky	69	5
Cleveland, OH	scattered clouds	66	4
Denver, CO	overcast clouds	66	4
Toronto, ON	clear sky	72	4
Chicago (NL), IL	scattered clouds	67	3
Minneapolis, MN	overcast clouds	63	3
St. Louis, MO	clear sky	68	3

Data last updated: 1756086966

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