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™
Arlington, TX overcast clouds 65 8
Boston, MA broken clouds 65 8
Bronx, NY clear sky 67 8
Cleveland, OH overcast clouds 67 8
Detroit, MI broken clouds 66 8
Houston, TX overcast clouds 75 8
Philadelphia, PA overcast clouds 68 8
Pittsburgh, PA few clouds 75 8
Queens, NY overcast clouds 67 8
Washington, DC overcast clouds 69 8
Cincinnati, OH broken clouds 74 7
Toronto, ON overcast clouds 63 6
Baltimore, MD overcast clouds 69 4
St. Louis, MO overcast clouds 56 4
Phoenix, AZ clear sky 53 3
San Diego, CA clear sky 52 3
Tampa, FL few clouds 75 3
Atlanta, GA broken clouds 65 2
Sacramento, CA clear sky 47 1
Anaheim, CA clear sky 50 1
Chicago (AL), IL overcast clouds 44 1
Chicago (NL), IL overcast clouds 44 1
Denver, CO broken clouds 30 1
Kansas City, MO broken clouds 47 1
Los Angeles, CA clear sky 51 1
Miami, FL scattered clouds 78 1
Milwaukee, WI overcast clouds 46 1
Minneapolis, MN few clouds 39 1
San Francisco, CA overcast clouds 51 1
Seattle, WA overcast clouds 51 1
Data last updated: 1745070967
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