Alyeska Seasonal temperature break down - The average median temperature March through May is approximately 39°F with highs averaging at 47°F and lows averaging at 31°F. June through August has an approximate average median temperature of 56°F with highs averaging at 69°F, lows typically average at 44°F. Average median temperatures September through November average out at 41°F, high temperatures average out at 47°F and lows average at 35°F.
The average median temperature December through February is approximately 25°F with highs averaging at 33°F, lows average out at 19°F.
The average Alyeska annual median temperature averages out at approximately 40°F. The coldest month in Alyeska is February with a median temperature of 23°F, the average high for the month of February is 31°F with an average low of 16°F. The hottest month in Alyeska is July with an approximate median temperature of 59°F, the average high for the month of July is 70°F with an average low of 47°F.