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™
Miami, FL clear sky 57 5
Tampa Bay, FL clear sky 54 4
Anaheim, CA overcast clouds 52 3
Houston, TX clear sky 52 3
Los Angeles, CA overcast clouds 53 3
Oakland, CA overcast clouds 53 3
Phoenix, AZ clear sky 57 3
San Diego, CA scattered clouds 52 3
San Francisco, CA overcast clouds 53 3
Boston, MA moderate rain 44 2
Bronx, NY scattered clouds 39 2
Queens, NY scattered clouds 40 2
Williamsport, PA overcast clouds 38 1
Arlington, TX clear sky 47 1
Atlanta, GA overcast clouds 42 1
Baltimore, MD few clouds 41 1
Chicago (AL), IL overcast clouds 40 1
Chicago (NL), IL overcast clouds 39 1
Cincinnati, OH overcast clouds 43 1
Cleveland, OH overcast clouds 44 1
Denver, CO clear sky 44 1
Detroit, MI overcast clouds 43 1
Kansas City, MO clear sky 33 1
Milwaukee, WI overcast clouds 39 1
Minneapolis, MN overcast clouds 34 1
Philadelphia, PA overcast clouds 39 1
Pittsburgh, PA moderate rain 42 1
Seattle, WA few clouds 45 1
St. Louis, MO overcast clouds 38 1
Toronto, ON scattered clouds 38 1
Washington, DC scattered clouds 44 1
Data last updated: 1732359366
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