Weather Averages for Seattle
Month January February March April May June July August September October November December Year
Average High 45.5F(8C) 49.5F(10C) 53.2F(12C) 58.2F(15C) 64.4F(18C) 69.6F(21C) 75.3F(24C) 75.6F(24C) 70.2F(21C) 59.7F(15C) 50.5F(10C) 45.5F(8C) 59.75F(15C)
Average Low 35.9F(2C) 37.2F(3C) 39.1F(4C) 42.1F(6C) 47.2F(8C) 51.7F(11C) 55.3F(13C) 55.7F(13C) 51.9F(11C) 45.7F(8C) 39.9F(4C) 35.9F(2C) 44.8F(7C)
Record High 64F(18C) 70F(21C) 78F(26C) 85F(29C) 93F(34C) 96F(36C) 103F(39C) 99F(37C) 98F(37C) 89F(32C) 74F(23C) 64F(18C) 103F(39C)
Record Low 0F(-18C) 1F(-17C) 11F(-12C) 29F(-2C) 29F(-2C) 38F(3C) 43F(6C) 44F(7) 35F(2C) 28F(-2C) 6F(-14C) 6F(-14C) 0F(-18C)
Precipitation inches(millimeters) 5.13in.(130.3mm) 4.18in.(106.2mm) 3.75in.(95.3mm) 2.59in.(65.8mm) 1.78in.(45.2mm) 1.49in.(37.8mm) 0.79in.(20.1mm) 1.02in.(25.9mm) 1.63in.(41.4mm) 3.19in.(81mm) 5.90in.(149.9mm) 5.62in.(142.7mm) 37.07in.(941.6mm)

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