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	86	10
Arlington, TX	clear sky	101	10
Atlanta, GA	broken clouds	94	10
Cincinnati, OH	few clouds	86	10
Houston, TX	clear sky	97	10
Kansas City, MO	overcast clouds	90	10
Las Vegas, NV	scattered clouds	105	10
Los Angeles, CA	clear sky	89	10
Miami, FL	light rain	87	10
Minneapolis, MN	broken clouds	93	10
Phoenix, AZ	scattered clouds	103	10
Sacramento, CA	clear sky	92	10
Tampa, FL	overcast clouds	90	10
St. Louis, MO	overcast clouds	90	9
Washington, DC	broken clouds	82	9
Baltimore, MD	moderate rain	83	8
Boston, MA	overcast clouds	80	8
Chicago (AL), IL	clear sky	77	8
Denver, CO	light rain	80	8
Detroit, MI	few clouds	77	8
Milwaukee, WI	clear sky	77	8
Philadelphia, PA	overcast clouds	80	8
Pittsburgh, PA	broken clouds	80	8
Queens, NY	moderate rain	77	8
San Diego, CA	clear sky	80	8
San Francisco, CA	clear sky	70	8
Seattle, WA	broken clouds	70	8
Bronx, NY	moderate rain	75	7
Tampa Bay, FL	overcast clouds	89	6
Toronto, ON	scattered clouds	79	4
Chicago (NL), IL	clear sky	76	3
Cleveland, OH	broken clouds	77	3

Data last updated: 1785272167

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.