Monthly outlook for Port O'Brien, AK: average high 42°, average low 37.5°. That is 2.3° above the climate normal for October. Precipitation is expected on 11 days (about 4.3 inches), against a normal of 8 days and 2.9 inches. The warmest day looks like 29 October (47.4°), the coolest 8 November (31.7°).
42°/37.5°
Average high / low
+2.3°
Above normal
11 / 8
Wet days / normal
4.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
28 October – 6 November
44.3°
38.4°
+3.3°
7 November – 16 November
38°
36.2°
+1°
17 November – 26 November
at normal
34.1°
—
October records over 66 years
60.8°3 October 2025All-time high
8.8°21 October 1966All-time low
Thu, 2947° / 45°0.14
47 °
Port O'Brien, Thursday, 29 October
Rain. High 47°, low 45°.
Pressure29.80 inHg
Wind12.1 mph S
Humidity94%
Visibility6.1 mi
Dew point44°
Fri, 3047° / 41°0.24
47 °
Port O'Brien, Friday, 30 October
Rain. High 47°, low 41°.
Pressure29.23 inHg
Wind7.8 mph S
Humidity79%
Visibility6.2 mi
Dew point37°
Sat, 3143° / 40°0
43 °
Port O'Brien, Saturday, 31 October
Overcast. High 43°, low 40°.
Pressure29.26 inHg
Wind3 mph E
Humidity80%
Visibility6.2 mi
Dew point35°
Sun, 0144° / 40°0.02
44 °
Port O'Brien, Sunday, 1 November
Light rain. High 44°, low 40°.
Pressure29.53 inHg
Wind1.4 mph W
Humidity89%
Visibility6.2 mi
Dew point38°
Mon, 0244° / 39°0
44 °
Port O'Brien, Monday, 2 November
Overcast. High 44°, low 39°.
Pressure29.50 inHg
Wind15.6 mph E
Humidity68%
Visibility—
Dew point32°
Tue, 0345° / 40°0.63
45 °
Port O'Brien, Tuesday, 3 November
Rain. High 45°, low 40°.
Pressure29.12 inHg
Wind23.6 mph E
Humidity91%
Visibility—
Dew point42°
Wed, 0444° / 41°0.02
44 °
Port O'Brien, Wednesday, 4 November
Light rain. High 44°, low 41°.
Pressure29.18 inHg
Wind6 mph SE
Humidity86%
Visibility—
Dew point39°
Thu, 0544° / 39°0.04
44 °
Port O'Brien, Thursday, 5 November
Light rain. High 44°, low 39°.
Pressure29.06 inHg
Wind6.5 mph N
Humidity80%
Visibility—
Dew point36°
Fri, 0639° / 36°1.12
39 °
Port O'Brien, Friday, 6 November
Snow. High 39°, low 36°.
Pressure29.00 inHg
Wind18.3 mph N
Humidity88%
Visibility—
Dew point36°
Sat, 0737° / 35°0.91
37 °
Port O'Brien, Saturday, 7 November
Snow. High 37°, low 35°.
Pressure29.15 inHg
Wind3.9 mph S
Humidity100%
Visibility—
Dew point35°
Sun, 0839° / 32°0
39 °
Port O'Brien, Sunday, 8 November
Clear. High 39°, low 32°.
Pressure29.88 inHg
Wind7.3 mph SE
Humidity90%
Visibility—
Dew point35°
Mon, 0940° / 35°0.12
40 °
Port O'Brien, Monday, 9 November
Light rain. High 40°, low 35°.
Pressure29.59 inHg
Wind10.9 mph SE
Humidity93%
Visibility—
Dew point38°
Tue, 1038° / 33°0.29
38 °
Port O'Brien, Tuesday, 10 November
Snow. High 38°, low 33°.
Pressure29.32 inHg
Wind11.2 mph SE
Humidity82%
Visibility—
Dew point31°
Wed, 1134° / 32°0.11
34 °
Port O'Brien, Wednesday, 11 November
Light snow. High 34°, low 32°.
Pressure29.23 inHg
Wind5.5 mph NE
Humidity87%
Visibility—
Dew point30°
Thu, 1239° / 33°0.61
39 °
Port O'Brien, Thursday, 12 November
Snow. High 39°, low 33°.
Pressure29.15 inHg
Wind13.9 mph NE
Humidity97%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 2333° / 25°0.16
33 °
Port O'Brien, Monday, 23 November
Climate normal for this date — 60-year average.
Average high33°
Average low25°
Average precipitation0.16 in
Chance of precipitation50%
Record high45° (2002)
Record low3° (1988)
Tue, 2432° / 25°0.12
32 °
Port O'Brien, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high32°
Average low25°
Average precipitation0.12 in
Chance of precipitation45%
Record high44° (2023)
Record low-6° (2021)
Wed, 2534° / 25°0.19
34 °
Port O'Brien, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high34°
Average low25°
Average precipitation0.19 in
Chance of precipitation48%
Record high44° (2002)
Record low0° (1963)
Thu, 2633° / 25°0.19
33 °
Port O'Brien, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high33°
Average low25°
Average precipitation0.19 in
Chance of precipitation55%
Record high45° (1981)
Record low-3° (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 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.