Monthly outlook for Port William, AK: average high 44.9°, average low 41.8°. That is 3° above the climate normal for October. Precipitation is expected on 7 days (about 3.9 inches), against a normal of 8 days and 2.5 inches. The warmest day looks like 30 October (46.9°), the coolest 2 November (38.2°).
44.9°/41.8°
Average high / low
+3°
Above normal
7 / 8
Wet days / normal
3.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
26 October – 4 November
44.6°
39.9°
+2.6°
5 November – 14 November
45.3°
38.7°
+3.7°
15 November – 24 November
at normal
36.9°
—
October records over 66 years
56.3°8 October 2025All-time high
13.6°26 October 1985All-time low
Tue, 2746° / 42°0
46 °
Port William, Tuesday, 27 October
Overcast. High 46°, low 42°.
Pressure30.45 inHg
Wind8.8 mph N
Humidity83%
Visibility6.2 mi
Dew point39°
Wed, 2846° / 40°0.16
46 °
Port William, Wednesday, 28 October
Rain. High 46°, low 40°.
Pressure30.21 inHg
Wind5.1 mph SE
Humidity84%
Visibility6.2 mi
Dew point38°
Thu, 2946° / 44°0.09
46 °
Port William, Thursday, 29 October
Light rain. High 46°, low 44°.
Pressure29.91 inHg
Wind11 mph E
Humidity96%
Visibility1.2 mi
Dew point44°
Fri, 3047° / 42°0.2
47 °
Port William, Friday, 30 October
Rain. High 47°, low 42°.
Pressure29.35 inHg
Wind26 mph SW
Humidity75%
Visibility—
Dew point37°
Sat, 3144° / 42°0.01
44 °
Port William, Saturday, 31 October
Light rain. High 44°, low 42°.
Pressure29.47 inHg
Wind19.9 mph SW
Humidity76%
Visibility—
Dew point36°
Sun, 0142° / 39°0.01
42 °
Port William, Sunday, 1 November
Light rain. High 42°, low 39°.
Pressure29.77 inHg
Wind9.8 mph SW
Humidity72%
Visibility—
Dew point33°
Mon, 0242° / 38°0.01
42 °
Port William, Monday, 2 November
Light rain. High 42°, low 38°.
Pressure29.53 inHg
Wind18.3 mph E
Humidity75%
Visibility—
Dew point33°
Tue, 0343° / 41°0.03
43 °
Port William, Tuesday, 3 November
Light rain. High 43°, low 41°.
Pressure29.38 inHg
Wind25.5 mph E
Humidity71%
Visibility—
Dew point34°
Wed, 0444° / 42°1.66
44 °
Port William, Wednesday, 4 November
Heavy rain. High 44°, low 42°.
Pressure29.32 inHg
Wind37.5 mph E
Humidity84%
Visibility—
Dew point39°
Thu, 0545° / 42°0.45
45 °
Port William, Thursday, 5 November
Rain. High 45°, low 42°.
Pressure29.26 inHg
Wind26.1 mph N
Humidity81%
Visibility—
Dew point38°
Fri, 0645° / 39°0.02
45 °
Port William, Friday, 6 November
Light rain. High 45°, low 39°.
Pressure29.21 inHg
Wind14.7 mph N
Humidity83%
Visibility—
Dew point36°
Sat, 0747° / 44°0.43
47 °
Port William, Saturday, 7 November
Light rain. High 47°, low 44°.
Pressure28.94 inHg
Wind32.6 mph E
Humidity93%
Visibility—
Dew point44°
Sun, 0846° / 42°0.83
46 °
Port William, Sunday, 8 November
Rain. High 46°, low 42°.
Pressure28.88 inHg
Wind31.3 mph E
Humidity85%
Visibility—
Dew point40°
Mon, 0944° / 44°0
44 °
Port William, Monday, 9 November
Overcast. High 44°, low 44°.
Pressure29.59 inHg
Wind27.1 mph E
Humidity81%
Visibility—
Dew point39°
Tue, 1045° / 42°0.02
45 °
Port William, Tuesday, 10 November
Light rain. High 45°, low 42°.
Pressure29.47 inHg
Wind28.4 mph NE
Humidity72%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 1140° / 35°0.18
40 °
Port William, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high40°
Average low35°
Average precipitation0.18 in
Chance of precipitation55%
Record high47° (2014)
Record low15° (1975)
Thu, 1239° / 34°0.14
39 °
Port William, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high39°
Average low34°
Average precipitation0.14 in
Chance of precipitation43%
Record high49° (2018)
Record low18° (1975)
Fri, 1338° / 33°0.11
38 °
Port William, Friday, 13 November
Climate normal for this date — 60-year average.
Average high38°
Average low33°
Average precipitation0.11 in
Chance of precipitation45%
Record high47° (2018)
Record low19° (1961)
Sat, 1438° / 33°0.11
38 °
Port William, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high38°
Average low33°
Average precipitation0.11 in
Chance of precipitation42%
Record high47° (1986)
Record low17° (1975)
Sun, 1537° / 32°0.14
37 °
Port William, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high37°
Average low32°
Average precipitation0.14 in
Chance of precipitation45%
Record high46° (1979)
Record low11° (2006)
Mon, 1637° / 31°0.12
37 °
Port William, Monday, 16 November
Climate normal for this date — 60-year average.
Average high37°
Average low31°
Average precipitation0.12 in
Chance of precipitation43%
Record high46° (2014)
Record low14° (2011)
Tue, 1737° / 32°0.1
37 °
Port William, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high37°
Average low32°
Average precipitation0.1 in
Chance of precipitation38%
Record high46° (1964)
Record low10° (2021)
Wed, 1837° / 32°0.14
37 °
Port William, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high37°
Average low32°
Average precipitation0.14 in
Chance of precipitation42%
Record high46° (1967)
Record low9° (2021)
Thu, 1938° / 33°0.17
38 °
Port William, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high38°
Average low33°
Average precipitation0.17 in
Chance of precipitation55%
Record high49° (2019)
Record low17° (2021)
Fri, 2038° / 33°0.17
38 °
Port William, Friday, 20 November
Climate normal for this date — 60-year average.
Average high38°
Average low33°
Average precipitation0.17 in
Chance of precipitation50%
Record high45° (1967)
Record low20° (1960)
Sat, 2138° / 32°0.21
38 °
Port William, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high38°
Average low32°
Average precipitation0.21 in
Chance of precipitation58%
Record high46° (1978)
Record low10° (2011)
Sun, 2237° / 31°0.15
37 °
Port William, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high37°
Average low31°
Average precipitation0.15 in
Chance of precipitation50%
Record high46° (2002)
Record low3° (2011)
Mon, 2336° / 31°0.16
36 °
Port William, Monday, 23 November
Climate normal for this date — 60-year average.
Average high36°
Average low31°
Average precipitation0.16 in
Chance of precipitation45%
Record high47° (2002)
Record low9° (1988)
Tue, 2436° / 31°0.11
36 °
Port William, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high36°
Average low31°
Average precipitation0.11 in
Chance of precipitation43%
Record high44° (2002)
Record low12° (1994)
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.