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.

View All Parks

See Results

The Home Run Forecast Index has been featured on

HRF PREMIUM IS NOW AVAILABLE

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™
Atlanta, GA	broken clouds	91	10
Baltimore, MD	few clouds	89	10
Bronx, NY	broken clouds	87	10
Chicago (AL), IL	scattered clouds	94	10
Chicago (NL), IL	scattered clouds	94	10
Cincinnati, OH	scattered clouds	92	10
Cleveland, OH	broken clouds	90	10
Denver, CO	broken clouds	89	10
Detroit, MI	clear sky	93	10
Houston, TX	broken clouds	91	10
Milwaukee, WI	broken clouds	89	10
Philadelphia, PA	scattered clouds	88	10
Phoenix, AZ	few clouds	101	10
Pittsburgh, PA	few clouds	90	10
Queens, NY	broken clouds	87	10
St. Louis, MO	scattered clouds	94	10
Tampa, FL	broken clouds	86	10
Washington, DC	scattered clouds	89	10
Miami, FL	few clouds	88	9
Sacramento, CA	clear sky	81	8
Anaheim, CA	clear sky	84	8
Arlington, TX	overcast clouds	83	8
Boston, MA	overcast clouds	83	8
Kansas City, MO	few clouds	84	8
Los Angeles, CA	clear sky	81	8
Minneapolis, MN	scattered clouds	82	8
San Diego, CA	few clouds	78	8
San Francisco, CA	few clouds	64	8
Toronto, ON	scattered clouds	83	8
Seattle, WA	overcast clouds	70	5

Data last updated: 1751745366

API Access

Add Home Run Forecast to Your Site or App

Give your audience a quick way to understand how weather will affect hitting distance. Enhance your game previews, picks and analysis with hourly forecasts up to two days out. When it comes to fantasy baseball or the sportsbook every edge counts.