连阴雨

連陰雨
liányīnyǔ
prolonged spell of rainy weather

CEDICT

spell of rainy days

Wiktionary

多日连续下雨

維基詞典

Entry Composition

1 连 lián
  1. to link
  2. to join
  3. to connect
  4. continuously
  5. in succession
  6. including
  7. (used with 也 yě, 都 dōu etc) even
  8. company (military)
2 阴雨 yīnyǔ overcast and rainy