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™
Houston, TX overcast clouds 70 8
Kansas City, MO broken clouds 64 8
Arlington, TX overcast clouds 67 7
West Palm Beach, FL broken clouds 76 7
Anaheim, CA overcast clouds 60 6
San Diego, CA overcast clouds 60 6
Atlanta, GA overcast clouds 65 5
Cincinnati, OH overcast clouds 66 5
Phoenix, AZ few clouds 71 5
Tampa Bay, FL few clouds 73 5
Jupiter, FL broken clouds 76 4
Mexico City, México clear sky 70 4
Cleveland, OH overcast clouds 61 4
Miami, FL broken clouds 76 4
St. Louis, MO broken clouds 61 4
Chicago (AL), IL scattered clouds 52 3
Detroit, MI few clouds 57 3
Los Angeles, CA overcast clouds 58 3
Oakland, CA broken clouds 54 3
Pittsburgh, PA moderate rain 62 3
San Francisco, CA broken clouds 53 3
Seattle, WA overcast clouds 52 3
Toronto, ON clear sky 57 3
Washington, DC overcast clouds 53 3
Baltimore, MD light rain 52 2
Queens, NY broken clouds 52 2
Williamsport, PA broken clouds 54 2
Boston, MA scattered clouds 51 1
Bronx, NY few clouds 51 1
Chicago (NL), IL clear sky 50 1
Denver, CO broken clouds 40 1
Dyersville, IA scattered clouds 49 1
Milwaukee, WI clear sky 48 1
Minneapolis, MN overcast clouds 48 1
Philadelphia, PA overcast clouds 51 1
Data last updated: 1714823766
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