This pattern appears in KNIT magazine issue one (formerly Yarn Forward Magazine). Knit out of the lovely Hazel Knits Artisan Sock in the bright and cheery Electrolyte color.

Pattern description:
As a mom of two rain and puddle loving children, I spend a lot of time getting wet! This design is a playful interpretation of the impacts of rain on wool. Yarn overs of various sizes mimic the pattern of raindrops. Knit yourself a fun yet stylish hat!