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™
Tampa Bay, FL clear sky 60 4
Atlanta, GA overcast clouds 58 3
Houston, TX broken clouds 58 3
Miami, FL few clouds 69 3
St. Louis, MO overcast clouds 47 2
Williamsport, PA snow 34 1
Anaheim, CA clear sky 45 1
Arlington, TX clear sky 49 1
Baltimore, MD overcast clouds 40 1
Boston, MA overcast clouds 31 1
Bronx, NY light rain 38 1
Chicago (AL), IL overcast clouds 39 1
Chicago (NL), IL overcast clouds 38 1
Cincinnati, OH overcast clouds 46 1
Cleveland, OH light rain 40 1
Denver, CO clear sky 28 1
Detroit, MI light rain 38 1
Kansas City, MO overcast clouds 41 1
Los Angeles, CA clear sky 45 1
Milwaukee, WI overcast clouds 37 1
Minneapolis, MN clear sky 30 1
Oakland, CA broken clouds 46 1
Philadelphia, PA overcast clouds 40 1
Phoenix, AZ clear sky 45 1
Pittsburgh, PA overcast clouds 40 1
Queens, NY light rain 40 1
San Diego, CA clear sky 46 1
San Francisco, CA broken clouds 47 1
Seattle, WA heavy intensity rain 42 1
Toronto, ON overcast clouds 32 1
Washington, DC overcast clouds 44 1
Data last updated: 1738324568
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