Central Valley Heat Impacting Multiple Commodities

September 05, 2017

Excessive heat and high humidity in California’s San Joaquin Valley will impact multiple commodities over the next two weeks. Prolonged temperatures in the 109-111º range over the weekend impacted availability of crews as well as quality issues.


  • Markon First Crop (MFC) Lunch Bunch Grapes and Markon Essentials (ESS) Red Seedless Grapes are available
  • High temperatures and humidity will cause softness and mold issues
  • Supplies are expected to remain adequate through September


  • MFC Cantaloupe and Honeydew will be sporadic over the next two weeks
  • High humidity levels will cause over maturity, early breakdown and inconsistent sugar content
  • Sugar levels will range from 8-12 Brix, as compared to more consistent levels of 14-16 Brix


  • MFC and ESS Valencia Oranges are sporadic; packer label supplies are being substituted as needed
  • Persistently high temperatures are causing rind breakdown, softness, and stem end aging which has significantly decreased yields at pack out
    • Re-greening is a common issue this time of year due to heat
    • Shelf-life is shorter than normal; ordering for quick turns is recommended
  • Small sizes are extremely limited; demand exceeds supply