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.

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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™
Boston, MA broken clouds 73 8
Bronx, NY clear sky 75 8
Houston, TX overcast clouds 80 8
Philadelphia, PA broken clouds 74 8
Washington, DC broken clouds 75 8
Baltimore, MD broken clouds 73 6
Detroit, MI clear sky 61 6
Queens, NY clear sky 75 6
Williamsport, PA overcast clouds 65 5
Atlanta, GA overcast clouds 70 5
Cincinnati, OH overcast clouds 65 5
Pittsburgh, PA broken clouds 69 5
Arlington, TX clear sky 68 4
Cleveland, OH broken clouds 58 4
Los Angeles, CA clear sky 72 4
Tampa Bay, FL scattered clouds 81 4
Anaheim, CA overcast clouds 72 3
Chicago (AL), IL broken clouds 52 3
Chicago (NL), IL broken clouds 52 3
Kansas City, MO clear sky 53 3
Miami, FL overcast clouds 82 3
Oakland, CA clear sky 68 3
Phoenix, AZ few clouds 67 3
San Diego, CA scattered clouds 74 3
San Francisco, CA few clouds 68 3
St. Louis, MO overcast clouds 55 3
Toronto, ON broken clouds 63 3
Denver, CO overcast clouds 28 1
Milwaukee, WI overcast clouds 49 1
Minneapolis, MN overcast clouds 45 1
Seattle, WA broken clouds 54 1
Data last updated: 1730937374
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