Seattle is also known as the “Rain city.” However, the precipitation amount is less than in most American cities. The name originates from all the cloudy and rainy days Seattle has within one year. Most precipitation falls as drizzle or light rain. In spring, late fall, and winters it mostly is overcast (even though it does not rain a lot in this time periods). There are a lot of clouds in Seattle. With only 58 clear days a year, most of them are occurring between June and September. Looking at the temperatures, the winters are cool and wet (lows in winter are around 40°F), and the summers are dry and warm (average highs to about 80°F). Because it doesn’t get too hot in summer, most locals do not have air-conditioning in their homes, though all hotels will. Hotter weather is only occurring in a few summer days. Sometimes the climate is also classified as Mediterranean.
The record high in Seattle is just 100°F, the record low is 0°F. The warmest months are July and August, and the coldest month is January. The dark, short, and overcast winter days can be unpleasant and depressing to some.
Also, the Puget Sound Convergence Zone has a big impact on Seattle’s climate. Two air currents with origins over the Pacific Ocean meet (before there were split by the Olympic Mountains), are then forced upward, and that results in convection.