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™
Miami, FL	broken clouds	78	8
Anaheim, CA	clear sky	74	7
Phoenix, AZ	clear sky	74	7
Arlington, TX	clear sky	79	6
Houston, TX	clear sky	80	6
Kansas City, MO	clear sky	74	6
Los Angeles, CA	clear sky	75	6
San Diego, CA	clear sky	74	6
Chicago (NL), IL	overcast clouds	71	5
St. Louis, MO	overcast clouds	76	5
Chicago (AL), IL	overcast clouds	72	4
Milwaukee, WI	few clouds	71	4
Sacramento, CA	clear sky	62	4
San Francisco, CA	overcast clouds	65	4
Tampa Bay, FL	clear sky	83	4
Tampa, FL	scattered clouds	83	4
Baltimore, MD	few clouds	64	3
Cincinnati, OH	scattered clouds	71	3
Las Vegas, NV	clear sky	63	3
Toronto, ON	scattered clouds	61	3
Atlanta, GA	clear sky	68	2
Boston, MA	clear sky	66	2
Bronx, NY	clear sky	64	2
Cleveland, OH	scattered clouds	67	2
Detroit, MI	clear sky	68	2
Philadelphia, PA	clear sky	65	2
Pittsburgh, PA	clear sky	64	2
Queens, NY	clear sky	64	2
Washington, DC	few clouds	65	2
Williamsport, PA	clear sky	58	1
Denver, CO	scattered clouds	51	1
Minneapolis, MN	broken clouds	55	1
Seattle, WA	overcast clouds	49	1

Data last updated: 1792950967

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.