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™
Arlington, TX	clear sky	85	10
Chicago (NL), IL	scattered clouds	85	10
Houston, TX	broken clouds	88	10
Phoenix, AZ	clear sky	94	10
Tampa, FL	scattered clouds	89	10
Anaheim, CA	clear sky	72	8
Baltimore, MD	overcast clouds	71	8
Chicago (AL), IL	scattered clouds	85	8
Cincinnati, OH	broken clouds	78	8
Cleveland, OH	clear sky	78	8
Detroit, MI	overcast clouds	83	8
Kansas City, MO	clear sky	77	8
Los Angeles, CA	clear sky	70	8
Milwaukee, WI	scattered clouds	84	8
Minneapolis, MN	broken clouds	73	8
Pittsburgh, PA	heavy intensity rain	77	8
San Diego, CA	clear sky	71	8
St. Louis, MO	overcast clouds	81	8
Toronto, ON	broken clouds	72	8
Washington, DC	overcast clouds	73	8
Atlanta, GA	broken clouds	81	7
Miami, FL	broken clouds	89	7
Philadelphia, PA	broken clouds	71	7
Boston, MA	broken clouds	67	6
Queens, NY	overcast clouds	65	6
Sacramento, CA	clear sky	67	5
San Francisco, CA	few clouds	59	5
Seattle, WA	broken clouds	58	5
Bronx, NY	overcast clouds	65	4
Denver, CO	overcast clouds	64	4

Data last updated: 1750175766

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.