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™
Houston, TX overcast clouds 76 8
Philadelphia, PA overcast clouds 67 8
Phoenix, AZ clear sky 82 8
Washington, DC clear sky 69 8
Boston, MA overcast clouds 59 7
Queens, NY broken clouds 62 7
Anaheim, CA overcast clouds 57 5
Arlington, TX clear sky 72 5
Atlanta, GA overcast clouds 64 5
Cincinnati, OH overcast clouds 66 5
Sacramento, CA overcast clouds 59 4
Bronx, NY overcast clouds 63 4
Cleveland, OH light rain 63 4
Detroit, MI overcast clouds 63 4
Los Angeles, CA broken clouds 56 4
Pittsburgh, PA overcast clouds 65 4
San Francisco, CA broken clouds 53 4
St. Louis, MO clear sky 66 4
Tampa, FL few clouds 74 4
Baltimore, MD overcast clouds 68 3
Kansas City, MO overcast clouds 59 3
Miami, FL few clouds 76 3
San Diego, CA few clouds 58 3
Seattle, WA clear sky 64 3
Toronto, ON overcast clouds 55 3
Chicago (AL), IL overcast clouds 48 1
Chicago (NL), IL overcast clouds 47 1
Denver, CO overcast clouds 43 1
Milwaukee, WI overcast clouds 47 1
Minneapolis, MN clear sky 48 1
Data last updated: 1745636168
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