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
Houston, TX	clear sky	88	10
Kansas City, MO	clear sky	85	10
Phoenix, AZ	clear sky	87	10
St. Louis, MO	scattered clouds	87	10
Tampa, FL	overcast clouds	88	10
Miami, FL	light rain	90	9
Anaheim, CA	overcast clouds	70	8
Atlanta, GA	broken clouds	80	8
Baltimore, MD	clear sky	81	8
Boston, MA	clear sky	82	8
Bronx, NY	clear sky	79	8
Chicago (AL), IL	overcast clouds	76	8
Chicago (NL), IL	overcast clouds	76	8
Cleveland, OH	few clouds	71	8
Denver, CO	overcast clouds	78	8
Las Vegas, NV	scattered clouds	84	8
Milwaukee, WI	overcast clouds	75	8
Toronto, ON	broken clouds	76	8
Cincinnati, OH	heavy intensity rain	67	7
Detroit, MI	broken clouds	74	7
Philadelphia, PA	broken clouds	82	7
Pittsburgh, PA	scattered clouds	70	7
San Diego, CA	overcast clouds	72	7
Washington, DC	clear sky	81	7
Los Angeles, CA	overcast clouds	68	6
Minneapolis, MN	broken clouds	77	6
Dyersville, IA	broken clouds	75	5
Sacramento, CA	overcast clouds	60	5
Tampa Bay, FL	overcast clouds	89	5
Queens, NY	clear sky	81	4
San Francisco, CA	overcast clouds	58	4
Seattle, WA	few clouds	61	4

Data last updated: 1786546564

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.