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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HRF forecast value available for each contest, with detailed data throughout the 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 few clouds 86 10
Mexico City, México scattered clouds 86 8
Anaheim, CA overcast clouds 62 8
Arlington, TX clear sky 79 8
Chicago (NL), IL few clouds 70 8
Dyersville, IA broken clouds 74 8
Houston, TX clear sky 77 8
Kansas City, MO clear sky 84 8
Los Angeles, CA overcast clouds 57 8
Minneapolis, MN clear sky 83 8
San Diego, CA overcast clouds 65 8
St. Louis, MO clear sky 77 8
Atlanta, GA clear sky 72 7
Chicago (AL), IL scattered clouds 70 5
Miami, FL broken clouds 76 5
Bronx, NY overcast clouds 52 4
Cincinnati, OH clear sky 65 4
Detroit, MI clear sky 61 4
Milwaukee, WI clear sky 60 4
Pittsburgh, PA clear sky 57 4
Tampa Bay, FL few clouds 74 4
Jupiter, FL clear sky 70 3
Baltimore, MD few clouds 62 3
Cleveland, OH clear sky 56 3
Denver, CO overcast clouds 74 3
Oakland, CA overcast clouds 51 3
Philadelphia, PA scattered clouds 57 3
Queens, NY broken clouds 52 3
San Francisco, CA overcast clouds 52 3
Seattle, WA scattered clouds 60 3
Washington, DC clear sky 62 3
West Palm Beach, FL broken clouds 72 3
Williamsport, PA scattered clouds 51 3
Boston, MA overcast clouds 49 1
Toronto, ON clear sky 51 1
Data last updated: 1713052565
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