Monthly outlook for Port O'Brien, AK: average high 42.7°, average low 37.4°. That is 2° above the climate normal for October. Precipitation is expected on 11 days (about 3.2 inches), against a normal of 8 days and 2.6 inches. The warmest day looks like 26 October (49°), the coolest 5 November (30.7°).
42.7°/37.4°
Average high / low
+2°
Above normal
11 / 8
Wet days / normal
3.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
44.3°
39.8°
+2.5°
1 November – 10 November
40.1°
37.5°
+1.4°
11 November – 20 November
at normal
35.4°
—
October records over 66 years
60.8°3 October 2025All-time high
8.8°21 October 1966All-time low
Fri, 2344° / 34°0
44 °
Port O'Brien, Friday, 23 October
Overcast. High 44°, low 34°.
Pressure30.30 inHg
Wind2.6 mph E
Humidity59%
Visibility6.2 mi
Dew point25°
Sat, 2443° / 38°0.05
43 °
Port O'Brien, Saturday, 24 October
Snow. High 43°, low 38°.
Pressure30.27 inHg
Wind9.6 mph SE
Humidity86%
Visibility6.2 mi
Dew point36°
Sun, 2546° / 41°0.06
46 °
Port O'Brien, Sunday, 25 October
Light rain. High 46°, low 41°.
Pressure30.21 inHg
Wind3.1 mph W
Humidity91%
Visibility6.2 mi
Dew point41°
Mon, 2649° / 41°0
49 °
Port O'Brien, Monday, 26 October
Overcast. High 49°, low 41°.
Pressure30.45 inHg
Wind6.8 mph SW
Humidity67%
Visibility6.2 mi
Dew point35°
Tue, 2748° / 40°0
48 °
Port O'Brien, Tuesday, 27 October
Partly cloudy. High 48°, low 40°.
Pressure30.47 inHg
Wind4.3 mph SW
Humidity59%
Visibility—
Dew point33°
Wed, 2843° / 40°0.09
43 °
Port O'Brien, Wednesday, 28 October
Light rain. High 43°, low 40°.
Pressure30.09 inHg
Wind4.2 mph NE
Humidity92%
Visibility—
Dew point39°
Thu, 2946° / 42°0.1
46 °
Port O'Brien, Thursday, 29 October
Light rain. High 46°, low 42°.
Pressure29.91 inHg
Wind15.9 mph S
Humidity86%
Visibility—
Dew point41°
Fri, 3044° / 39°0.21
44 °
Port O'Brien, Friday, 30 October
Snow. High 44°, low 39°.
Pressure29.41 inHg
Wind13.7 mph SW
Humidity73%
Visibility—
Dew point35°
Sat, 3143° / 38°0
43 °
Port O'Brien, Saturday, 31 October
Overcast. High 43°, low 38°.
Pressure29.59 inHg
Wind11.7 mph S
Humidity73%
Visibility—
Dew point34°
Sun, 0143° / 38°0.09
43 °
Port O'Brien, Sunday, 1 November
Light rain. High 43°, low 38°.
Pressure29.74 inHg
Wind5.1 mph SE
Humidity88%
Visibility—
Dew point38°
Mon, 0240° / 38°0.21
40 °
Port O'Brien, Monday, 2 November
Snow. High 40°, low 38°.
Pressure29.88 inHg
Wind6.7 mph S
Humidity91%
Visibility—
Dew point37°
Tue, 0340° / 37°0.05
40 °
Port O'Brien, Tuesday, 3 November
Snow. High 40°, low 37°.
Pressure29.65 inHg
Wind15 mph N
Humidity76%
Visibility—
Dew point32°
Wed, 0437° / 35°0.99
37 °
Port O'Brien, Wednesday, 4 November
Snow. High 37°, low 35°.
Pressure29.09 inHg
Wind18.8 mph N
Humidity100%
Visibility—
Dew point36°
Thu, 0537° / 31°0.09
37 °
Port O'Brien, Thursday, 5 November
Snow. High 37°, low 31°.
Pressure29.50 inHg
Wind9.1 mph SE
Humidity84%
Visibility—
Dew point32°
Fri, 0644° / 32°1.22
44 °
Port O'Brien, Friday, 6 November
Heavy rain. High 44°, low 32°.
Pressure29.56 inHg
Wind42 mph E
Humidity87%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0737° / 29°0.21
37 °
Port O'Brien, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high37°
Average low29°
Average precipitation0.21 in
Chance of precipitation53%
Record high51° (2019)
Record low14° (1996)
Sun, 0837° / 29°0.18
37 °
Port O'Brien, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high37°
Average low29°
Average precipitation0.18 in
Chance of precipitation53%
Record high51° (2019)
Record low11° (1990)
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)
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.