Do certain weather conditions lead to more home runs?

Yes! Weather conditions can change the distance a batted ball travels by more than 20%. Home Run Forecast provides a simple way to see the if weather will help or hinder baseball flight during a game. The Home Run Forecast Index demonstrates a strong correlation with the number of HRs hit and runs scored in big league games. Check out our Premium Subscription for on-demand HRFI forecast data by team and for each 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 LocationSky CoverTemperature (°F)Home Run Forecast Index™
Miami, FLclear sky698
Houston, TXbroken clouds675
San Diego, CAbroken clouds645
Seattle, WAlight rain525
Tampa Bay, FLfew clouds675
Las Vegas, NVovercast clouds604
Los Angeles, CAovercast clouds594
Phoenix, AZfew clouds624
San Francisco, CAbroken clouds564
Tampa, FLfew clouds654
Anaheim, CAovercast clouds623
Arlington, TXclear sky583
Sacramento, CAclear sky533
Williamsport, PAovercast clouds371
Atlanta, GAovercast clouds421
Baltimore, MDovercast clouds431
Boston, MAclear sky361
Bronx, NYovercast clouds401
Chicago (AL), ILlight rain381
Chicago (NL), ILbroken clouds381
Cincinnati, OHovercast clouds411
Cleveland, OHlight rain391
Denver, COclear sky491
Detroit, MIclear sky361
Kansas City, MOclear sky341
Milwaukee, WIclear sky361
Minneapolis, MNclear sky301
Philadelphia, PAovercast clouds401
Pittsburgh, PAovercast clouds391
Queens, NYovercast clouds401
St. Louis, MOovercast clouds411
Toronto, ONovercast clouds391
Washington, DCovercast clouds441
Data last updated: 1794624968
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