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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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™
Miami, FL overcast clouds 72 8
Oakland, CA light rain 56 4
Tampa Bay, FL clear sky 60 4
Los Angeles, CA clear sky 55 3
Phoenix, AZ clear sky 54 3
San Francisco, CA overcast clouds 55 3
Williamsport, PA overcast clouds 38 1
Anaheim, CA clear sky 45 1
Arlington, TX clear sky 40 1
Atlanta, GA clear sky 43 1
Baltimore, MD clear sky 44 1
Boston, MA overcast clouds 46 1
Bronx, NY overcast clouds 46 1
Chicago (AL), IL overcast clouds 31 1
Chicago (NL), IL overcast clouds 31 1
Cincinnati, OH light rain 33 1
Cleveland, OH overcast clouds 34 1
Denver, CO scattered clouds 35 1
Detroit, MI overcast clouds 34 1
Houston, TX clear sky 51 1
Kansas City, MO clear sky 33 1
Milwaukee, WI snow 30 1
Minneapolis, MN broken clouds 34 1
Philadelphia, PA overcast clouds 45 1
Pittsburgh, PA overcast clouds 40 1
Queens, NY overcast clouds 47 1
San Diego, CA broken clouds 49 1
Seattle, WA overcast clouds 43 1
St. Louis, MO overcast clouds 38 1
Toronto, ON overcast clouds 39 1
Washington, DC few clouds 44 1
Data last updated: 1732197367
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