These fruits and veg­eta­bles are typ­i­cal­ly in sea­son in August in Wash­ing­ton state:

• Apples, Gala
• Apples, Red Delicious
  
• Apri­cots
• Apri­um
• Arugu­la
• Basil
  
• Beans, Green
  
• Beets, Gold
• Beets, Red
• Bell Pep­pers, Green
• Bell Pep­pers, Red
• Bell Pep­pers, Yellow
• Black­ber­ries
• Blue­ber­ries
• Bok Choy
• Bok Choy, Baby
• Broc­coli
• Cab­bage, Green
• Cab­bage, Napa
• Cab­bage, Red
• Cab­bage, Savoy
• Car­rots
• Chard, Rain­bow
• Chard, Red
• Chard, Swiss
• Chile Pep­pers, Ana­heim / Hot Cher­ry / Jalapeño / Poblano
• Cilantro
  
• Col­lard Greens
• Corn
• Cucum­bers
• Dan­de­lion
• Dill
• Egg­plant
• Esca­role
• Fen­nel
• Kale
• Kohlra­bi
• Leeks
  
• Let­tuce
• Mel­ons, Ambrosia / Can­taloupe / Galia / Hon­ey­dew / Watermelon
• Mush­rooms
  
• Mus­tard Greens
• Nec­tarines
• Onions, Green (Scal­lions)
• Onions, Red
• Onions, Yel­low
• Pars­ley, Cur­ley / Italian
  
• Peach­es
• Pears, Bartlett
• Plums
• Plu­ots
• Pota­toes, Russet
• Pota­toes, Yukon Gold
• Radic­chio
• Radish­es
  
• Romanesco
• Rutaba­gas
• Shal­lots
• Sum­mer Squash, Crookneck
  
• Sum­mer Squash, Sunburst
• Sum­mer Squash, Zucchini
• Tomatil­los
• Toma­toes
• Turnips

See What’s in sea­son in Wash­ing­ton state for sources and a Google Sheets spread­sheet with data for the whole year.