10-day forecast for Port William, AK: 51° to 61°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
61°
Best day: Sunday, August 9
54° · 0.63 in
Worst day: Thursday, August 13
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1061° / 54°0
Morning55°feels 55°
Afternoon61°feels 60°
Evening59°feels 58°
Overnight55°feels 54°
61 °
Port William, Monday, 10 August
Overcast. High 61°, low 54°.
Pressure30.09 inHg
Wind7.1 mph W
Humidity76%
Visibility6.2 mi
Dew point52°
Tue, 1161° / 54°0
Morning55°feels 55°
Afternoon61°feels 60°
Evening59°feels 58°
Overnight55°feels 54°
61 °
Port William, Tuesday, 11 August
Mostly clear. High 61°, low 54°.
Pressure30.12 inHg
Wind4.3 mph E
Humidity75%
Visibility6.2 mi
Dew point53°
Wed, 1257° / 51°0.01
Morning52°feels 52°
Afternoon57°feels 56°
Evening54°feels 53°
Overnight51°feels 50°
57 °
Port William, Wednesday, 12 August
Light rain. High 57°, low 51°.
Pressure30.24 inHg
Wind12.1 mph E
Humidity81%
Visibility6.2 mi
Dew point50°
Thu, 1354° / 53°0.63
Morning53°feels 53°
Afternoon54°feels 53°
Evening54°feels 53°
Overnight53°feels 53°
54 °
Port William, Thursday, 13 August
Rain. High 54°, low 53°.
Pressure30.06 inHg
Wind19.1 mph E
Humidity98%
Visibility—
Dew point53°
Fri, 1456° / 53°0.13
Morning54°feels 54°
Afternoon55°feels 55°
Evening56°feels 56°
Overnight55°feels 54°
56 °
Port William, Friday, 14 August
Light rain. High 56°, low 53°.
Pressure30.03 inHg
Wind9.5 mph E
Humidity99%
Visibility—
Dew point54°
Sat, 1560° / 54°0
Morning56°feels 56°
Afternoon59°feels 58°
Evening57°feels 56°
Overnight55°feels 54°
60 °
Port William, Saturday, 15 August
Overcast. High 60°, low 54°.
Pressure30.09 inHg
Wind11.2 mph E
Humidity79%
Visibility—
Dew point52°
Sun, 1656° / 51°0
Morning52°feels 51°
Afternoon55°feels 54°
Evening53°feels 53°
Overnight53°feels 52°
56 °
Port William, Sunday, 16 August
Overcast. High 56°, low 51°.
Pressure29.88 inHg
Wind15.3 mph E
Humidity80%
Visibility—
Dew point49°
Mon, 1755° / 53°0.21
Morning53°feels 52°
Afternoon53°feels 53°
Evening53°feels 53°
Overnight53°feels 53°
55 °
Port William, Monday, 17 August
Light rain. High 55°, low 53°.
Pressure29.77 inHg
Wind19.5 mph E
Humidity92%
Visibility—
Dew point51°
Tue, 1855° / 53°0.11
Morning53°feels 53°
Afternoon53°feels 53°
Evening54°feels 53°
Overnight53°feels 53°
55 °
Port William, Tuesday, 18 August
Light rain. High 55°, low 53°.
Pressure29.88 inHg
Wind17.8 mph E
Humidity98%
Visibility—
Dew point52°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Port William, AK around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.