What does the cryptic crossword clue "Such unwelcome weather? In parts a little sun (5)" mean?

The wordplay uses a container (one word inside another). IN (synonym="IN") in RAY (synonym="RAY") = RAINY The answer is RAINY.

Such unwelcome weather? In parts a little sun (5)

Guardian Cryptic #29553 | 23 Across | 2024-11-29 flower