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™
Arlington, TX overcast clouds 63 8
Houston, TX clear sky 70 8
Miami, FL clear sky 69 6
Kansas City, MO clear sky 54 5
Anaheim, CA overcast clouds 56 4
Baltimore, MD broken clouds 52 3
Los Angeles, CA scattered clouds 54 3
Phoenix, AZ few clouds 53 3
San Diego, CA overcast clouds 58 3
Washington, DC broken clouds 52 3
Tampa Bay, FL clear sky 62 2
Williamsport, PA broken clouds 45 1
Atlanta, GA few clouds 49 1
Boston, MA few clouds 46 1
Bronx, NY clear sky 48 1
Chicago (AL), IL overcast clouds 40 1
Chicago (NL), IL overcast clouds 41 1
Cincinnati, OH overcast clouds 44 1
Cleveland, OH overcast clouds 40 1
Denver, CO broken clouds 47 1
Detroit, MI overcast clouds 42 1
Milwaukee, WI broken clouds 37 1
Minneapolis, MN clear sky 36 1
Oakland, CA few clouds 46 1
Philadelphia, PA broken clouds 49 1
Pittsburgh, PA overcast clouds 42 1
Queens, NY scattered clouds 48 1
San Francisco, CA few clouds 47 1
Seattle, WA light rain 43 1
St. Louis, MO overcast clouds 48 1
Toronto, ON overcast clouds 41 1
Data last updated: 1732460169
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