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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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™
Cleveland, OH broken clouds 64 8
Houston, TX overcast clouds 76 8
West Palm Beach, FL scattered clouds 76 8
Jupiter, FL overcast clouds 75 6
Phoenix, AZ broken clouds 74 6
Anaheim, CA overcast clouds 57 5
Arlington, TX broken clouds 65 5
Cincinnati, OH broken clouds 63 5
Detroit, MI overcast clouds 62 5
San Diego, CA overcast clouds 58 5
Tampa Bay, FL clear sky 73 5
Atlanta, GA clear sky 63 4
Chicago (AL), IL scattered clouds 54 4
Los Angeles, CA overcast clouds 56 4
Miami, FL few clouds 76 4
Toronto, ON overcast clouds 52 4
Mexico City, México clear sky 67 3
Baltimore, MD moderate rain 54 3
Chicago (NL), IL scattered clouds 53 3
Pittsburgh, PA heavy intensity rain 58 3
St. Louis, MO clear sky 55 3
Washington, DC moderate rain 54 3
Boston, MA overcast clouds 46 1
Bronx, NY overcast clouds 49 1
Denver, CO clear sky 47 1
Dyersville, IA clear sky 43 1
Kansas City, MO clear sky 48 1
Milwaukee, WI clear sky 47 1
Minneapolis, MN clear sky 42 1
Oakland, CA few clouds 47 1
Philadelphia, PA overcast clouds 49 1
Queens, NY overcast clouds 49 1
San Francisco, CA clear sky 47 1
Seattle, WA overcast clouds 50 1
Williamsport, PA light rain 49 1
Data last updated: 1714906565
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