Seatack Seasonal temperature break down - The average median temperature March through May is approximately 60°F with highs averaging at 72°F and lows averaging at 49°F. June through August has an approximate average median temperature of 77°F with highs averaging at 87°F, lows typically average at 67°F. Average median temperatures September through November average out at 62°F, high temperatures average out at 73°F and lows average at 53°F.
The average median temperature December through February is approximately 45°F with highs averaging at 56°F, lows average out at 33°F.
The average Seatack annual median temperature averages out at approximately 61°F. The coldest month in Seatack is January with a median temperature of 42°F, the average high for the month of January is 51°F with an average low of 31°F. The hottest month in Seatack is July with an approximate median temperature of 79°F, the average high for the month of July is 90°F with an average low of 69°F.