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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Detailed weather data and hourly index data for each park.

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™
Denver, CO overcast clouds 69 9
Arlington, TX overcast clouds 76 8
Houston, TX broken clouds 74 7
West Palm Beach, FL few clouds 77 7
Atlanta, GA few clouds 69 5
Phoenix, AZ scattered clouds 75 5
San Francisco, CA few clouds 53 5
Tampa Bay, FL few clouds 77 5
Washington, DC broken clouds 66 5
Jupiter, FL clear sky 77 4
Anaheim, CA clear sky 61 4
Baltimore, MD broken clouds 64 4
Cincinnati, OH clear sky 66 4
Oakland, CA few clouds 54 4
Philadelphia, PA overcast clouds 59 4
Pittsburgh, PA broken clouds 63 4
St. Louis, MO overcast clouds 66 4
Bronx, NY overcast clouds 52 3
Chicago (AL), IL broken clouds 51 3
Chicago (NL), IL broken clouds 52 3
Cleveland, OH overcast clouds 59 3
Detroit, MI broken clouds 55 3
Dyersville, IA overcast clouds 56 3
Kansas City, MO overcast clouds 56 3
Los Angeles, CA clear sky 63 3
Miami, FL scattered clouds 78 3
Milwaukee, WI clear sky 51 3
Minneapolis, MN clear sky 58 3
Queens, NY overcast clouds 53 3
San Diego, CA scattered clouds 58 3
Seattle, WA overcast clouds 51 3
Toronto, ON broken clouds 55 3
Williamsport, PA overcast clouds 55 3
Mexico City, México broken clouds 75 2
Boston, MA light rain 48 1
Data last updated: 1714964126
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