Red Hat Melons are in season late July through early October.
You can find us at:

Corvallis and Albany Farmers Markets
Corvallis: 1st & Jackson, Saturdays & Wednesdays, 9 AM to 1 PM
Albany: 4th & Ellsworth, Saturdays, 9 AM to 1 PM

Beaverton Farmers Market
12375 SW 5th St, Beaverton, OR
Saturdays 8:30 AM to 1:30 PM
503-643-5345

Lane County Farmers Market
85 E 8th Ave, Eugene, OR
Tuesdays 10 AM to 3 PM

McMinnville Farmers Market
1st & Cowls
Thursdays 11:00 PM to 5:00 PM  

Milwaukie Farmers Market
SE Main St. & Harrison St. Milwaukie, OR
Sundays 9:30 AM to 2:00 PM