June Gloom

In Southern California in the early summer, we often experience what is called ‘June Gloom’.

The gray, dreary skies you’re waking up to these days are a Southern California phenomenon known as ‘June gloom’. Geography, ocean currents and weather patterns conspire at this time of the year to cause overcast mornings and occasional coastal drizzle.

It’s all part of living with a marine climate. The condition is mostly confined to late spring and early summer. When the phenomenon occurs early, we call it ‘May gray.’
— Los Angeles Times
 

June Gloom

Both of these words are pronounced with the long /u/ sound. 

Similar words:

June: cute, tune, use, confuse

Gloom: boot, bloom, soon, room

May Gray