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.

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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™
Phoenix, AZ	scattered clouds	88	10
Anaheim, CA	clear sky	85	8
Houston, TX	clear sky	80	8
Los Angeles, CA	clear sky	83	8
Sacramento, CA	clear sky	68	8
San Diego, CA	clear sky	82	8
San Francisco, CA	few clouds	63	8
Arlington, TX	clear sky	76	7
Las Vegas, NV	clear sky	76	7
Miami, FL	scattered clouds	82	7
Tampa, FL	few clouds	80	5
Denver, CO	clear sky	68	4
Seattle, WA	clear sky	61	4
Tampa Bay, FL	clear sky	80	4
Atlanta, GA	clear sky	69	3
Chicago (AL), IL	clear sky	67	3
Cincinnati, OH	clear sky	70	3
Detroit, MI	clear sky	67	3
Kansas City, MO	overcast clouds	66	3
St. Louis, MO	few clouds	72	3
Williamsport, PA	clear sky	67	2
Bronx, NY	clear sky	64	2
Chicago (NL), IL	few clouds	66	2
Milwaukee, WI	overcast clouds	66	2
Pittsburgh, PA	clear sky	67	2
Queens, NY	clear sky	63	2
Toronto, ON	clear sky	66	2
Baltimore, MD	clear sky	67	1
Boston, MA	clear sky	56	1
Cleveland, OH	clear sky	65	1
Minneapolis, MN	clear sky	66	1
Philadelphia, PA	clear sky	66	1
Washington, DC	clear sky	68	1

Data last updated: 1792443368

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