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 scattered clouds 93 10
Jupiter, FL overcast clouds 82 8
West Palm Beach, FL scattered clouds 82 8
Anaheim, CA clear sky 63 6
Boston, MA broken clouds 63 6
Houston, TX clear sky 78 6
Queens, NY overcast clouds 61 6
Arlington, TX clear sky 75 5
Bronx, NY overcast clouds 62 5
Cincinnati, OH overcast clouds 64 5
Los Angeles, CA clear sky 60 5
Philadelphia, PA overcast clouds 62 5
San Francisco, CA scattered clouds 57 5
Washington, DC moderate rain 63 5
Williamsport, PA moderate rain 60 5
Atlanta, GA clear sky 67 4
Cleveland, OH overcast clouds 64 4
Denver, CO broken clouds 61 4
Oakland, CA scattered clouds 57 4
Pittsburgh, PA overcast clouds 64 4
San Diego, CA broken clouds 61 4
Seattle, WA few clouds 66 4
Tampa Bay, FL few clouds 82 4
Baltimore, MD light rain 63 3
Chicago (AL), IL broken clouds 53 3
Chicago (NL), IL broken clouds 52 3
Detroit, MI few clouds 59 3
Dyersville, IA scattered clouds 57 3
Kansas City, MO clear sky 64 3
Miami, FL scattered clouds 82 3
Milwaukee, WI overcast clouds 52 3
Minneapolis, MN clear sky 61 3
St. Louis, MO overcast clouds 65 3
Toronto, ON clear sky 58 3
Mexico City, México scattered clouds 77 2
Data last updated: 1715741766
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