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	clear sky	88	10
Anaheim, CA	broken clouds	60	8
Chicago (AL), IL	overcast clouds	64	8
Houston, TX	overcast clouds	77	8
West Palm Beach, FL	scattered clouds	77	8
Arlington, TX	moderate rain	74	7
Cleveland, OH	overcast clouds	62	7
Los Angeles, CA	few clouds	59	7
Cincinnati, OH	broken clouds	68	6
Milwaukee, WI	overcast clouds	57	6
Atlanta, GA	clear sky	68	5
Tampa Bay, FL	few clouds	77	5
Jupiter, FL	overcast clouds	76	4
Denver, CO	overcast clouds	58	4
Oakland, CA	broken clouds	51	4
Seattle, WA	overcast clouds	54	4
St. Louis, MO	clear sky	65	4
Toronto, ON	overcast clouds	57	4
Mexico City, México	scattered clouds	70	3
Chicago (NL), IL	overcast clouds	64	3
Detroit, MI	overcast clouds	65	3
Dyersville, IA	overcast clouds	55	3
Kansas City, MO	clear sky	55	3
Miami, FL	few clouds	78	3
Minneapolis, MN	clear sky	53	3
Pittsburgh, PA	overcast clouds	56	3
San Diego, CA	overcast clouds	61	3
San Francisco, CA	clear sky	51	3
Baltimore, MD	overcast clouds	52	2
Bronx, NY	overcast clouds	52	2
Queens, NY	overcast clouds	51	2
Washington, DC	overcast clouds	52	2
Boston, MA	overcast clouds	47	1
Philadelphia, PA	light rain	50	1
Williamsport, PA	light rain	51	1

Data last updated: 1714877766

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.