St. John's - I'd give it a 5
Summer: Best season, but it's too short. June is quite unpredictable, and often rainy, foggy and cool. July through September is (usually) ideal. Mid-twenties, a lot of sun, nice ocean breeze to keep it from getting too hot. Last summer was dreadful though, with summer not rolling in to town until sometime in August. Worst summer I can honestly ever remember.
Fall: Also nice. September through October are absolutely amazing, temperatures usually around 10-15 degrees, and it's mostly sunny. November is a bit cooler, around 5 degrees, and a lot darker. More grey, more rain.
Winter: Depressing. Dark and wet. December through March are just awful, often bouncing between cold and snowy, and warm'ish (around 3-5) and rainy. It may snow 30cm and two days later have 30mm of rain. The sun appears to take a trip south for these months.
Spring: Non-existent. March through June is just an extension of winter. It's still snow-y in to April, and even then it snows occasionally through late April and even in to May. It's cold, ranging from 0 in march/april to about 10 in June. The sun decides to come back around May, but only makes the occasional visit. May/June are also quite foggy.
Overall: ....I'm questioning the reason as to why I live here