Do certain weather conditions lead to more home runs?

Yes! Weather conditions change the distance a batted ball travels by more than 20%. Home Run Forecast provides a simple indication of how weather will help or hinder baseball flight during a game. The HRFI demonstrates a strong correlation with HRs hit and runs scored in big league games. Check out our Premium Subscription for on-demand forecast data by team and 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™
Phoenix, AZ	broken clouds	90	10
Cincinnati, OH	overcast clouds	69	8
Houston, TX	overcast clouds	78	8
Anaheim, CA	overcast clouds	61	7
Atlanta, GA	clear sky	69	7
Chicago (AL), IL	broken clouds	64	7
Cleveland, OH	overcast clouds	63	7
Milwaukee, WI	overcast clouds	60	7
Arlington, TX	overcast clouds	75	6
Denver, CO	few clouds	60	6
Los Angeles, CA	scattered clouds	61	6
Oakland, CA	scattered clouds	53	6
San Francisco, CA	scattered clouds	52	6
West Palm Beach, FL	scattered clouds	77	6
Mexico City, México	overcast clouds	75	5
Chicago (NL), IL	broken clouds	65	5
St. Louis, MO	few clouds	67	5
Tampa Bay, FL	broken clouds	77	5
Detroit, MI	broken clouds	67	4
San Diego, CA	broken clouds	62	4
Toronto, ON	broken clouds	59	4
Jupiter, FL	clear sky	77	3
Dyersville, IA	overcast clouds	56	3
Kansas City, MO	broken clouds	57	3
Miami, FL	few clouds	78	3
Minneapolis, MN	few clouds	56	3
Pittsburgh, PA	moderate rain	56	3
Seattle, WA	overcast clouds	55	3
Baltimore, MD	overcast clouds	52	2
Bronx, NY	overcast clouds	52	2
Queens, NY	overcast clouds	52	2
Washington, DC	overcast clouds	52	2
Williamsport, PA	light rain	51	2
Boston, MA	overcast clouds	47	1
Philadelphia, PA	light rain	50	1

Data last updated: 1714874166

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.