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™
Anaheim, CA	clear sky	90	10
Arlington, TX	few clouds	102	10
Atlanta, GA	overcast clouds	85	10
Boston, MA	few clouds	90	10
Bronx, NY	heavy intensity rain	87	10
Chicago (AL), IL	few clouds	87	10
Chicago (NL), IL	scattered clouds	87	10
Denver, CO	clear sky	96	10
Houston, TX	broken clouds	93	10
Kansas City, MO	broken clouds	85	10
Las Vegas, NV	broken clouds	103	10
Los Angeles, CA	clear sky	89	10
Minneapolis, MN	scattered clouds	90	10
Philadelphia, PA	moderate rain	86	10
Phoenix, AZ	few clouds	110	10
Sacramento, CA	clear sky	102	10
Seattle, WA	clear sky	87	10
St. Louis, MO	broken clouds	91	10
Baltimore, MD	scattered clouds	81	8
Cincinnati, OH	overcast clouds	82	8
Cleveland, OH	overcast clouds	80	8
Pittsburgh, PA	overcast clouds	79	8
Queens, NY	heavy intensity rain	82	8
San Diego, CA	broken clouds	85	8
San Francisco, CA	few clouds	65	8
Toronto, ON	overcast clouds	78	8
Washington, DC	broken clouds	80	8
Detroit, MI	scattered clouds	84	7
Miami, FL	broken clouds	88	7
Milwaukee, WI	broken clouds	83	7
Tampa, FL	overcast clouds	82	6
Tampa Bay, FL	light rain	83	5

Data last updated: 1786143366

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.