Do certain weather conditions lead to more home runs?

Yes! Weather conditions can change the distance a batted ball travels by more than 20%. Home Run Forecast provides a simple way to see the if weather will help or hinder baseball flight during a game. The Home Run Forecast Index demonstrates a strong correlation with the number of HRs hit and runs scored in big league games. Check out our Premium Subscription for on-demand HRFI forecast data by team and for each 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 69 8
Philadelphia, PA broken clouds 71 8
Phoenix, AZ overcast clouds 71 8
Queens, NY broken clouds 65 8
Tampa, FL broken clouds 75 8
Washington, DC light rain 66 7
Baltimore, MD moderate rain 67 6
Bronx, NY broken clouds 66 6
Houston, TX clear sky 67 5
Miami, FL broken clouds 81 5
Anaheim, CA broken clouds 56 4
Arlington, TX clear sky 63 4
Atlanta, GA overcast clouds 56 4
Minneapolis, MN clear sky 60 4
San Diego, CA overcast clouds 54 4
Sacramento, CA scattered clouds 53 3
Cleveland, OH overcast clouds 51 3
Denver, CO few clouds 56 3
Kansas City, MO clear sky 54 3
Los Angeles, CA overcast clouds 55 3
Pittsburgh, PA broken clouds 62 3
St. Louis, MO scattered clouds 52 3
Toronto, ON broken clouds 53 3
Chicago (AL), IL broken clouds 47 1
Chicago (NL), IL broken clouds 46 1
Cincinnati, OH overcast clouds 50 1
Detroit, MI overcast clouds 50 1
Milwaukee, WI clear sky 50 1
San Francisco, CA scattered clouds 49 1
Seattle, WA few clouds 44 1
Data last updated: 1746366969
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