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, FLbroken clouds715
Phoenix, AZfew clouds644
San Diego, CAovercast clouds604
San Francisco, CAbroken clouds594
Sacramento, CAclear sky543
Anaheim, CAbroken clouds593
Arlington, TXclear sky553
Los Angeles, CAclear sky583
Houston, TXclear sky522
Tampa, FLclear sky562
Atlanta, GAclear sky431
Baltimore, MDclear sky461
Boston, MAclear sky461
Bronx, NYclear sky481
Chicago (AL), ILovercast clouds421
Chicago (NL), ILovercast clouds431
Cincinnati, OHovercast clouds381
Cleveland, OHclear sky391
Denver, COclear sky471
Detroit, MIclear sky421
Kansas City, MOclear sky501
Milwaukee, WIclear sky401
Minneapolis, MNovercast clouds411
Philadelphia, PAclear sky481
Pittsburgh, PAclear sky411
Queens, NYclear sky481
Seattle, WAbroken clouds431
St. Louis, MOovercast clouds441
Toronto, ONclear sky421
Washington, DCclear sky461
Data last updated: 1762253769
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