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™
Phoenix, AZ scattered clouds 95 10
Miami, FL scattered clouds 83 8
San Francisco, CA few clouds 59 8
West Palm Beach, FL broken clouds 79 8
Jupiter, FL broken clouds 78 7
Anaheim, CA clear sky 64 7
Arlington, TX few clouds 74 7
Atlanta, GA clear sky 71 7
Boston, MA clear sky 68 7
Bronx, NY clear sky 67 7
Oakland, CA few clouds 60 6
Baltimore, MD broken clouds 69 5
Chicago (AL), IL few clouds 57 5
Cincinnati, OH broken clouds 64 5
Houston, TX broken clouds 73 5
Los Angeles, CA clear sky 62 5
Williamsport, PA clear sky 59 5
Detroit, MI overcast clouds 59 4
Milwaukee, WI light rain 54 4
Philadelphia, PA broken clouds 68 4
Queens, NY few clouds 68 4
San Diego, CA broken clouds 62 4
St. Louis, MO clear sky 66 4
Tampa Bay, FL clear sky 82 4
Toronto, ON overcast clouds 60 4
Washington, DC broken clouds 64 4
Chicago (NL), IL light rain 57 3
Cleveland, OH broken clouds 60 3
Denver, CO broken clouds 65 3
Dyersville, IA clear sky 55 3
Kansas City, MO broken clouds 72 3
Minneapolis, MN clear sky 57 3
Pittsburgh, PA overcast clouds 59 3
Seattle, WA broken clouds 54 3
Mexico City, México few clouds 77 2
Data last updated: 1716951366
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