Port William, Saturday, 8 August, 19:11
Partly cloudy. Feels like 59°. High 60°, low 53°.
Port William, Sunday, 9 August
Partly cloudy. High 62°, low 53°.
Port William, Monday, 10 August
Overcast. High 61°, low 53°.
Port William, Tuesday, 11 August
Mostly clear. High 61°, low 53°.
Port William, Wednesday, 12 August
Light rain. High 55°, low 51°.
Port William, Thursday, 13 August
Rain. High 53°, low 53°.
Port William, Friday, 14 August
Overcast. High 58°, low 53°.
Port William, Saturday, 15 August
Rain. High 53°, low 52°.
Port William, Sunday, 16 August
Rain. High 53°, low 52°.
Port William, Monday, 17 August
Light rain. High 54°, low 52°.
Port William, Tuesday, 18 August
Light rain. High 61°, low 53°.
Port William, Wednesday, 19 August
Overcast. High 58°, low 52°.
Port William, Thursday, 20 August
Rain. High 53°, low 52°.
Port William, Friday, 21 August
Rain. High 56°, low 52°.
Port William, Saturday, 22 August
Light rain. High 54°, low 51°.
Port William, Sunday, 23 August
Light rain. High 55°, low 50°.
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Port William, AK are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
They are real temperature extremes recorded in Port William, AK since 1960: the highest and lowest reading for each calendar date, with the year it happened.
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.