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™
Phoenix, AZ clear sky 88 10
Sacramento, CA clear sky 83 8
San Francisco, CA few clouds 59 8
Anaheim, CA clear sky 72 7
Los Angeles, CA clear sky 72 7
Tampa, FL broken clouds 77 7
Denver, CO scattered clouds 60 6
Atlanta, GA clear sky 68 5
Houston, TX heavy intensity rain 75 4
Miami, FL few clouds 78 4
San Diego, CA few clouds 66 4
Arlington, TX clear sky 68 3
Baltimore, MD overcast clouds 67 3
Boston, MA overcast clouds 57 3
Bronx, NY overcast clouds 60 3
Cincinnati, OH overcast clouds 56 3
Kansas City, MO clear sky 63 3
Philadelphia, PA broken clouds 65 3
Pittsburgh, PA overcast clouds 54 3
Queens, NY broken clouds 62 3
St. Louis, MO clear sky 60 3
Washington, DC overcast clouds 66 3
Chicago (AL), IL clear sky 45 1
Chicago (NL), IL clear sky 44 1
Cleveland, OH few clouds 45 1
Detroit, MI clear sky 44 1
Milwaukee, WI clear sky 45 1
Minneapolis, MN clear sky 58 1
Seattle, WA overcast clouds 57 1
Toronto, ON clear sky 45 1
Data last updated: 1746759367
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