Monthly outlook for Port O'Brien, AK: average high 40°, average low 35.2°. That is 0.8° above the climate normal for October. Precipitation is expected on 11 days (about 4.7 inches), against a normal of 8 days and 2.6 inches. The warmest day looks like 26 October (47.8°), the coolest 8 November (24.5°).
40°/35.2°
Average high / low
+0.8°
Above normal
11 / 8
Wet days / normal
4.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
42°
39.3°
+1.5°
3 November – 12 November
36.8°
37.2°
-0.2°
13 November – 22 November
at normal
35°
—
October records over 66 years
60.8°3 October 2025All-time high
8.8°21 October 1966All-time low
Sun, 2545° / 41°0.06
45 °
Port O'Brien, Sunday, 25 October
Light rain. High 45°, low 41°.
Pressure30.21 inHg
Wind7.7 mph SW
Humidity83%
Visibility6.2 mi
Dew point38°
Mon, 2648° / 40°0
48 °
Port O'Brien, Monday, 26 October
Light rain. High 48°, low 40°.
Pressure30.36 inHg
Wind14.7 mph SW
Humidity86%
Visibility6.2 mi
Dew point40°
Tue, 2746° / 41°0
46 °
Port O'Brien, Tuesday, 27 October
Clear. High 46°, low 41°.
Pressure30.47 inHg
Wind1.2 mph NE
Humidity82%
Visibility6.2 mi
Dew point37°
Wed, 2845° / 40°0.22
45 °
Port O'Brien, Wednesday, 28 October
Snow. High 45°, low 40°.
Pressure29.94 inHg
Wind8.9 mph SE
Humidity93%
Visibility6.2 mi
Dew point41°
Thu, 2945° / 39°0.26
45 °
Port O'Brien, Thursday, 29 October
Light rain. High 45°, low 39°.
Pressure29.59 inHg
Wind28.5 mph SW
Humidity85%
Visibility—
Dew point36°
Fri, 3042° / 38°0.46
42 °
Port O'Brien, Friday, 30 October
Snow. High 42°, low 38°.
Pressure29.23 inHg
Wind36.3 mph SW
Humidity87%
Visibility—
Dew point36°
Sat, 3138° / 37°0.22
38 °
Port O'Brien, Saturday, 31 October
Snow. High 38°, low 37°.
Pressure29.23 inHg
Wind27.7 mph SW
Humidity88%
Visibility—
Dew point34°
Sun, 0134° / 29°0
34 °
Port O'Brien, Sunday, 1 November
Overcast. High 34°, low 29°.
Pressure29.65 inHg
Wind8.3 mph SW
Humidity69%
Visibility—
Dew point24°
Mon, 0233° / 29°0.02
33 °
Port O'Brien, Monday, 2 November
Light snow. High 33°, low 29°.
Pressure29.41 inHg
Wind7.7 mph SE
Humidity56%
Visibility—
Dew point19°
Tue, 0339° / 36°1.29
39 °
Port O'Brien, Tuesday, 3 November
Snow. High 39°, low 36°.
Pressure28.97 inHg
Wind21.1 mph N
Humidity98%
Visibility—
Dew point38°
Wed, 0438° / 34°0.71
38 °
Port O'Brien, Wednesday, 4 November
Snow. High 38°, low 34°.
Pressure28.94 inHg
Wind14.4 mph N
Humidity100%
Visibility—
Dew point35°
Thu, 0534° / 32°0.43
34 °
Port O'Brien, Thursday, 5 November
Snow. High 34°, low 32°.
Pressure28.91 inHg
Wind8.2 mph N
Humidity93%
Visibility—
Dew point31°
Fri, 0638° / 31°0.71
38 °
Port O'Brien, Friday, 6 November
Snow. High 38°, low 31°.
Pressure28.97 inHg
Wind30.1 mph N
Humidity97%
Visibility—
Dew point33°
Sat, 0738° / 32°0.01
38 °
Port O'Brien, Saturday, 7 November
Snow. High 38°, low 32°.
Pressure29.44 inHg
Wind4.7 mph E
Humidity93%
Visibility—
Dew point34°
Sun, 0834° / 25°0.08
34 °
Port O'Brien, Sunday, 8 November
Light snow. High 34°, low 25°.
Pressure29.53 inHg
Wind4.4 mph SW
Humidity91%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0937° / 29°0.24
37 °
Port O'Brien, Monday, 9 November
Climate normal for this date — 60-year average.
Average high37°
Average low29°
Average precipitation0.24 in
Chance of precipitation45%
Record high50° (2019)
Record low7° (1990)
Tue, 1037° / 29°0.23
37 °
Port O'Brien, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high37°
Average low29°
Average precipitation0.23 in
Chance of precipitation58%
Record high49° (1986)
Record low6° (1975)
Wed, 1137° / 29°0.2
37 °
Port O'Brien, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high37°
Average low29°
Average precipitation0.2 in
Chance of precipitation58%
Record high48° (2014)
Record low8° (1975)
Thu, 1236° / 29°0.16
36 °
Port O'Brien, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high36°
Average low29°
Average precipitation0.16 in
Chance of precipitation48%
Record high50° (2018)
Record low10° (1977)
Fri, 1336° / 28°0.15
36 °
Port O'Brien, Friday, 13 November
Climate normal for this date — 60-year average.
Average high36°
Average low28°
Average precipitation0.15 in
Chance of precipitation47%
Record high48° (2019)
Record low13° (1977)
Sat, 1435° / 27°0.11
35 °
Port O'Brien, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high35°
Average low27°
Average precipitation0.11 in
Chance of precipitation52%
Record high47° (1986)
Record low9° (2006)
Sun, 1535° / 27°0.16
35 °
Port O'Brien, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high35°
Average low27°
Average precipitation0.16 in
Chance of precipitation43%
Record high47° (2014)
Record low7° (2021)
Mon, 1635° / 26°0.12
35 °
Port O'Brien, Monday, 16 November
Climate normal for this date — 60-year average.
Average high35°
Average low26°
Average precipitation0.12 in
Chance of precipitation43%
Record high49° (2018)
Record low5° (2009)
Tue, 1735° / 27°0.11
35 °
Port O'Brien, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high35°
Average low27°
Average precipitation0.11 in
Chance of precipitation33%
Record high46° (2018)
Record low6° (2009)
Wed, 1835° / 27°0.18
35 °
Port O'Brien, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high35°
Average low27°
Average precipitation0.18 in
Chance of precipitation37%
Record high46° (2014)
Record low11° (2021)
Thu, 1935° / 28°0.19
35 °
Port O'Brien, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high35°
Average low28°
Average precipitation0.19 in
Chance of precipitation55%
Record high49° (2019)
Record low11° (2006)
Fri, 2035° / 28°0.21
35 °
Port O'Brien, Friday, 20 November
Climate normal for this date — 60-year average.
Average high35°
Average low28°
Average precipitation0.21 in
Chance of precipitation53%
Record high44° (2014)
Record low10° (1989)
Sat, 2136° / 28°0.2
36 °
Port O'Brien, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high36°
Average low28°
Average precipitation0.2 in
Chance of precipitation57%
Record high45° (2003)
Record low7° (1994)
Sun, 2234° / 26°0.16
34 °
Port O'Brien, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high34°
Average low26°
Average precipitation0.16 in
Chance of precipitation52%
Record high44° (1993)
Record low-1° (2011)
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 O'Brien, 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 O'Brien, 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.