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™
Sacramento, CA	clear sky	88	10
Arlington, TX	overcast clouds	95	10
Atlanta, GA	scattered clouds	88	10
Cincinnati, OH	clear sky	90	10
Detroit, MI	broken clouds	88	10
Houston, TX	broken clouds	91	10
Phoenix, AZ	overcast clouds	94	10
Pittsburgh, PA	clear sky	86	10
St. Louis, MO	overcast clouds	95	10
Tampa, FL	broken clouds	88	9
Anaheim, CA	clear sky	81	8
Baltimore, MD	scattered clouds	83	8
Boston, MA	few clouds	78	8
Bronx, NY	clear sky	83	8
Chicago (AL), IL	scattered clouds	84	8
Kansas City, MO	clear sky	76	8
Los Angeles, CA	broken clouds	79	8
Miami, FL	broken clouds	84	8
Minneapolis, MN	few clouds	81	8
Philadelphia, PA	scattered clouds	83	8
Queens, NY	few clouds	83	8
San Diego, CA	broken clouds	81	8
San Francisco, CA	broken clouds	66	8
Toronto, ON	few clouds	80	8
Washington, DC	few clouds	83	8
Cleveland, OH	few clouds	81	7
Milwaukee, WI	scattered clouds	83	6
Chicago (NL), IL	scattered clouds	82	5
Denver, CO	clear sky	71	5
Seattle, WA	clear sky	68	4

Data last updated: 1758225368

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.