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 66 8
Philadelphia, PA overcast clouds 69 8
Phoenix, AZ overcast clouds 69 8
Queens, NY overcast clouds 64 8
Tampa, FL scattered clouds 74 8
Baltimore, MD moderate rain 66 7
Miami, FL broken clouds 80 7
Bronx, NY broken clouds 65 5
Washington, DC moderate rain 65 5
Anaheim, CA overcast clouds 56 4
Atlanta, GA broken clouds 55 4
Houston, TX clear sky 62 4
Sacramento, CA clear sky 52 3
Arlington, TX clear sky 57 3
Denver, CO few clouds 52 3
Los Angeles, CA overcast clouds 55 3
Minneapolis, MN clear sky 54 3
Pittsburgh, PA clear sky 61 3
San Diego, CA overcast clouds 54 3
Chicago (AL), IL broken clouds 45 1
Chicago (NL), IL broken clouds 45 1
Cincinnati, OH overcast clouds 49 1
Cleveland, OH overcast clouds 50 1
Detroit, MI overcast clouds 48 1
Kansas City, MO clear sky 48 1
Milwaukee, WI broken clouds 46 1
San Francisco, CA clear sky 49 1
Seattle, WA clear sky 43 1
St. Louis, MO broken clouds 49 1
Toronto, ON overcast clouds 51 1
Data last updated: 1746363368
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