I found these descriptions of the seasons in the city in the Waterdeep: Dragon Heist book and I thought I'd share it with fellow Gale fans:

🌼Spring🌼

In Waterdeep, early spring tends to be cold and damp. Misty rain falls for days on end. It’s common for fog to settle at night and last through the day. As the weather improves, the city attracts more visitors, and the streets become increasingly crowded as summer approaches.

☀️Summer☀️

Summers in Waterdeep are quite comfortable, and it’s a great time for citizens and visitors to congregate outside. The markets are busier than at any other time of year. Sometimes, though, warm air pushes up from the south and settles in the valleys north and east of the city. This air gets trapped, creating a hot spell that might last days or weeks. Activity in the city slows to a crawl, since Waterdavians are unaccustomed to such heat.

🍂Autumn🍂

Throughout autumn, wagonloads of food arrive in Waterdeep from outlying farms. Without this bounty, city folk would starve during the winter. Cold, howling sea winds remind Waterdavians that winter is near.

❄️Winter❄️

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