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™
Houston, TX clear sky 85 9
Phoenix, AZ scattered clouds 97 9
Jupiter, FL broken clouds 83 8
Mexico City, México light rain 82 8
Anaheim, CA clear sky 69 8
Arlington, TX clear sky 83 8
Boston, MA broken clouds 67 8
Los Angeles, CA clear sky 67 8
San Francisco, CA scattered clouds 60 8
West Palm Beach, FL scattered clouds 83 8
Philadelphia, PA light rain 64 7
Queens, NY overcast clouds 63 7
Washington, DC overcast clouds 63 7
Oakland, CA scattered clouds 63 6
Williamsport, PA overcast clouds 60 6
Atlanta, GA broken clouds 72 5
Cincinnati, OH overcast clouds 65 5
San Diego, CA broken clouds 64 5
Seattle, WA broken clouds 70 5
Tampa Bay, FL clear sky 83 5
Bronx, NY overcast clouds 64 4
Chicago (AL), IL overcast clouds 55 4
Cleveland, OH overcast clouds 66 4
Detroit, MI few clouds 62 4
Kansas City, MO broken clouds 68 4
Pittsburgh, PA broken clouds 66 4
St. Louis, MO moderate rain 66 4
Toronto, ON clear sky 60 4
Baltimore, MD overcast clouds 64 3
Chicago (NL), IL overcast clouds 54 3
Denver, CO broken clouds 68 3
Dyersville, IA broken clouds 62 3
Miami, FL scattered clouds 83 3
Milwaukee, WI clear sky 53 3
Minneapolis, MN clear sky 69 3
Data last updated: 1715734566
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