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.

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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™
Mexico City, México	clear sky	80	8
Arlington, TX	overcast clouds	72	8
Atlanta, GA	broken clouds	70	8
Cleveland, OH	overcast clouds	69	8
Houston, TX	few clouds	80	8
St. Louis, MO	clear sky	75	8
West Palm Beach, FL	scattered clouds	84	8
Kansas City, MO	broken clouds	64	7
Los Angeles, CA	overcast clouds	59	7
Chicago (NL), IL	broken clouds	68	6
Phoenix, AZ	few clouds	77	6
San Diego, CA	overcast clouds	61	6
Jupiter, FL	broken clouds	83	5
Anaheim, CA	overcast clouds	60	5
Chicago (AL), IL	broken clouds	73	5
Dyersville, IA	overcast clouds	58	5
San Francisco, CA	moderate rain	54	5
Toronto, ON	scattered clouds	66	5
Cincinnati, OH	light rain	67	4
Detroit, MI	broken clouds	66	4
Miami, FL	broken clouds	84	4
Oakland, CA	moderate rain	55	4
Tampa Bay, FL	clear sky	83	4
Milwaukee, WI	clear sky	66	3
Pittsburgh, PA	overcast clouds	64	3
Queens, NY	broken clouds	60	3
Seattle, WA	light rain	52	3
Baltimore, MD	overcast clouds	55	2
Boston, MA	broken clouds	54	2
Philadelphia, PA	light rain	55	2
Washington, DC	overcast clouds	55	2
Williamsport, PA	overcast clouds	59	2
Bronx, NY	overcast clouds	61	1
Denver, CO	clear sky	45	1
Minneapolis, MN	overcast clouds	47	1

Data last updated: 1714838168

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