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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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 LocationSky CoverTemperature (°F)Home Run Forecast Index™
Miami, FLbroken clouds818
Tampa, FLclear sky778
Los Angeles, CAclear sky605
Phoenix, AZbroken clouds715
Anaheim, CAovercast clouds574
Denver, COscattered clouds603
San Diego, CAovercast clouds583
San Francisco, CAclear sky523
Seattle, WAovercast clouds513
Houston, TXovercast clouds522
Sacramento, CAovercast clouds391
Arlington, TXovercast clouds361
Atlanta, GAfew clouds381
Baltimore, MDbroken clouds271
Boston, MAlight snow321
Bronx, NYovercast clouds281
Chicago (AL), ILclear sky101
Chicago (NL), ILfew clouds101
Cincinnati, OHclear sky121
Cleveland, OHbroken clouds171
Detroit, MIovercast clouds171
Kansas City, MOclear sky211
Milwaukee, WIclear sky61
Minneapolis, MNovercast clouds31
Philadelphia, PAclear sky261
Pittsburgh, PAlight snow161
Queens, NYbroken clouds281
St. Louis, MOclear sky171
Toronto, ONclear sky201
Washington, DCbroken clouds271
Data last updated: 1765738568
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