Weather in Port William, AK
Port William, Tuesday, 20 October, 06:49
Clear. Feels like 34°. High 44°, low 39°.
Monthly outlook for Port William, AK: average high 43.1°, average low 40.3°. That is 1.4° above the climate normal for October. Precipitation is expected on 5 days (about 2.4 inches), against a normal of 7 days and 2.4 inches. The warmest day looks like 2 November (46.2°), the coolest 22 October (37.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 43° | 41.1° | +1° |
| 30 October – 8 November | 43.4° | 39.2° | +2.3° |
| 9 November – 18 November | at normal | 37.9° | — |
October records over 66 years
0
Port William, Wednesday, 21 October
Overcast. High 39°, low 38°.
0
Port William, Thursday, 22 October
Mostly clear. High 39°, low 37°.
0.01
Port William, Friday, 23 October
Light rain. High 45°, low 38°.
0.01Port William, Saturday, 24 October
Light rain. High 45°, low 43°.
1.15
Port William, Sunday, 25 October
Snow. High 44°, low 37°.
0.02Port William, Monday, 26 October
Light rain. High 43°, low 42°.
0Port William, Tuesday, 27 October
Overcast. High 43°, low 42°.
0.02Port William, Wednesday, 28 October
Light rain. High 44°, low 43°.
0Port William, Thursday, 29 October
Overcast. High 45°, low 42°.
0.5Port William, Friday, 30 October
Rain. High 44°, low 43°.
0.48Port William, Saturday, 31 October
Rain. High 44°, low 39°.
0Port William, Sunday, 1 November
Mostly clear. High 42°, low 40°.
0.13Port William, Monday, 2 November
Light rain. High 46°, low 41°.
0Port William, Tuesday, 3 November
Overcast. High 42°, low 39°.
0.02Port William, Wednesday, 4 November
Light rain. High 42°, low 40°.
0.16Port William, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09
Port William, Friday, 6 November
Climate normal for this date — 60-year average.
0.17Port William, Saturday, 7 November
Climate normal for this date — 60-year average.
0.17Port William, Sunday, 8 November
Climate normal for this date — 60-year average.
0.21Port William, Monday, 9 November
Climate normal for this date — 60-year average.
0.23Port William, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.18Port William, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.14Port William, Thursday, 12 November
Climate normal for this date — 60-year average.
0.11Port William, Friday, 13 November
Climate normal for this date — 60-year average.
0.11Port William, Saturday, 14 November
Climate normal for this date — 60-year average.
0.14Port William, Sunday, 15 November
Climate normal for this date — 60-year average.
0.12Port William, Monday, 16 November
Climate normal for this date — 60-year average.
0.1Port William, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.14Port William, Wednesday, 18 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
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.
What does "above normal" mean?
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.
Where do the 66-year records come from?
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.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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