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 clear sky 59 6
Houston, TX overcast clouds 62 5
Miami, FL clear sky 59 4
Tampa Bay, FL clear sky 54 4
Anaheim, CA overcast clouds 57 3
Los Angeles, CA broken clouds 56 3
Phoenix, AZ scattered clouds 56 3
San Diego, CA overcast clouds 57 3
Kansas City, MO clear sky 50 2
Williamsport, PA overcast clouds 43 1
Atlanta, GA clear sky 39 1
Baltimore, MD overcast clouds 49 1
Boston, MA few clouds 44 1
Bronx, NY clear sky 45 1
Chicago (AL), IL overcast clouds 39 1
Chicago (NL), IL overcast clouds 39 1
Cincinnati, OH overcast clouds 41 1
Cleveland, OH overcast clouds 40 1
Denver, CO clear sky 45 1
Detroit, MI overcast clouds 42 1
Milwaukee, WI clear sky 34 1
Minneapolis, MN broken clouds 37 1
Oakland, CA few clouds 48 1
Philadelphia, PA broken clouds 47 1
Pittsburgh, PA overcast clouds 42 1
Queens, NY clear sky 46 1
San Francisco, CA few clouds 49 1
Seattle, WA light rain 43 1
St. Louis, MO clear sky 41 1
Toronto, ON broken clouds 40 1
Washington, DC broken clouds 48 1
Data last updated: 1732445769
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