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 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.

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HRF forecast value available for each contest, with detailed data throughout the game.

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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™
Anaheim, CA clear sky 91 10
Arlington, TX clear sky 91 10
Denver, CO scattered clouds 93 10
Kansas City, MO few clouds 90 10
Los Angeles, CA clear sky 91 10
Phoenix, AZ scattered clouds 112 10
St. Louis, MO scattered clouds 88 10
Atlanta, GA light rain 78 8
Birmingham, AL overcast clouds 76 8
Bronx, NY clear sky 80 8
Cincinnati, OH light rain 82 8
Cleveland, OH overcast clouds 76 8
Detroit, MI overcast clouds 76 8
Houston, TX broken clouds 81 8
Oakland, CA few clouds 83 8
Philadelphia, PA broken clouds 80 8
Pittsburgh, PA overcast clouds 77 8
Queens, NY clear sky 79 8
San Diego, CA scattered clouds 84 8
San Francisco, CA few clouds 77 8
Seattle, WA broken clouds 76 8
Washington, DC broken clouds 81 8
Baltimore, MD broken clouds 81 7
Chicago (AL), IL broken clouds 74 7
Miami, FL broken clouds 89 7
Toronto, ON few clouds 77 7
Milwaukee, WI overcast clouds 72 6
Boston, MA overcast clouds 68 5
London, England few clouds 63 5
Tampa Bay, FL broken clouds 85 5
Chicago (NL), IL broken clouds 73 4
Minneapolis, MN clear sky 76 4
Data last updated: 1721861767
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