Monthly outlook for Port William, AK: average high 46.2°, average low 43.7°. That is 3.8° above the climate normal for October. Precipitation is expected on 15 days (about 5.5 inches), against a normal of 8 days and 2.6 inches. The warmest day looks like 29 October (49.2°), the coolest 2 November (40.8°).
46.2°/43.7°
Average high / low
+3.8°
Above normal
15 / 8
Wet days / normal
5.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
28 October – 6 November
46.1°
39.6°
+3.6°
7 November – 16 November
46.5°
38.2°
+4.6°
17 November – 26 November
at normal
36.9°
—
October records over 66 years
56.3°8 October 2025All-time high
13.6°26 October 1985All-time low
Thu, 2949° / 45°0.26
49 °
Port William, Thursday, 29 October
Rain. High 49°, low 45°.
Pressure29.80 inHg
Wind7 mph S
Humidity94%
Visibility6.2 mi
Dew point46°
Fri, 3047° / 43°0.5
47 °
Port William, Friday, 30 October
Rain. High 47°, low 43°.
Pressure29.26 inHg
Wind16.7 mph SW
Humidity76%
Visibility6.2 mi
Dew point39°
Sat, 3145° / 41°0.06
45 °
Port William, Saturday, 31 October
Light rain. High 45°, low 41°.
Pressure29.29 inHg
Wind13.1 mph SE
Humidity82%
Visibility6.2 mi
Dew point38°
Sun, 0144° / 42°0.18
44 °
Port William, Sunday, 1 November
Light rain. High 44°, low 42°.
Pressure29.56 inHg
Wind11.7 mph E
Humidity87%
Visibility—
Dew point39°
Mon, 0244° / 41°0.37
44 °
Port William, Monday, 2 November
Rain. High 44°, low 41°.
Pressure29.47 inHg
Wind39.8 mph E
Humidity79%
Visibility—
Dew point37°
Tue, 0346° / 44°0.34
46 °
Port William, Tuesday, 3 November
Rain. High 46°, low 44°.
Pressure29.29 inHg
Wind33.4 mph E
Humidity84%
Visibility—
Dew point41°
Wed, 0446° / 45°0.15
46 °
Port William, Wednesday, 4 November
Light rain. High 46°, low 45°.
Pressure29.23 inHg
Wind15.9 mph SE
Humidity86%
Visibility—
Dew point42°
Thu, 0546° / 45°0.35
46 °
Port William, Thursday, 5 November
Light rain. High 46°, low 45°.
Pressure29.35 inHg
Wind20.1 mph SE
Humidity81%
Visibility—
Dew point40°
Fri, 0647° / 45°0.64
47 °
Port William, Friday, 6 November
Rain. High 47°, low 45°.
Pressure29.38 inHg
Wind33.7 mph NE
Humidity92%
Visibility—
Dew point44°
Sat, 0746° / 43°0.58
46 °
Port William, Saturday, 7 November
Rain. High 46°, low 43°.
Pressure29.41 inHg
Wind27.6 mph E
Humidity90%
Visibility—
Dew point43°
Sun, 0846° / 45°0.47
46 °
Port William, Sunday, 8 November
Rain. High 46°, low 45°.
Pressure29.47 inHg
Wind23.6 mph E
Humidity96%
Visibility—
Dew point45°
Mon, 0947° / 45°0.67
47 °
Port William, Monday, 9 November
Rain. High 47°, low 45°.
Pressure29.35 inHg
Wind42.8 mph E
Humidity86%
Visibility—
Dew point41°
Tue, 1047° / 45°0.33
47 °
Port William, Tuesday, 10 November
Light rain. High 47°, low 45°.
Pressure28.97 inHg
Wind34.9 mph NE
Humidity92%
Visibility—
Dew point44°
Wed, 1147° / 45°0.48
47 °
Port William, Wednesday, 11 November
Light rain. High 47°, low 45°.
Pressure29.12 inHg
Wind31.2 mph NE
Humidity89%
Visibility—
Dew point43°
Thu, 1245° / 43°0.05
45 °
Port William, Thursday, 12 November
Light rain. High 45°, low 43°.
Pressure29.12 inHg
Wind25.7 mph N
Humidity88%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 2537° / 31°0.16
37 °
Port William, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high37°
Average low31°
Average precipitation0.16 in
Chance of precipitation52%
Record high45° (2002)
Record low7° (1963)
Thu, 2636° / 31°0.19
36 °
Port William, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high36°
Average low31°
Average precipitation0.19 in
Chance of precipitation50%
Record high47° (1981)
Record low6° (1963)
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.