Monthly outlook for Portal, ND: average high 54.8°, average low 40°. That is 2.3° above the climate normal for October. Precipitation is expected on 2 days (about 1.7 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 21 October (72.9°), the coolest 16 October (28.9°).
54.8°/40°
Average high / low
+2.3°
Above normal
2 / 3
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
56.8°
51.9°
+2.7°
22 October – 31 October
51.4°
47°
+2.4°
1 November – 10 November
at normal
39.7°
—
October records over 66 years
86.9°1 October 1992All-time high
-3.3°30 October 1984All-time low
Climate normals and records are computed from the nearest reference point — Flaxton (10 mi).
Tue, 1345° / 35°0
45 °
Portal, Tuesday, 13 October
Overcast. High 45°, low 35°.
Pressure30.09 inHg
Wind7.5 mph W
Humidity78%
Visibility6.2 mi
Dew point33°
Wed, 1454° / 30°0
54 °
Portal, Wednesday, 14 October
Clear. High 54°, low 30°.
Pressure30.24 inHg
Wind2.1 mph SW
Humidity74%
Visibility6.2 mi
Dew point37°
Thu, 1549° / 38°0
49 °
Portal, Thursday, 15 October
Overcast. High 49°, low 38°.
Pressure30.45 inHg
Wind24.5 mph NW
Humidity63%
Visibility6.2 mi
Dew point29°
Fri, 1656° / 29°0
56 °
Portal, Friday, 16 October
Clear. High 56°, low 29°.
Pressure30.53 inHg
Wind10.2 mph S
Humidity60%
Visibility6.2 mi
Dew point30°
Sat, 1768° / 42°0
68 °
Portal, Saturday, 17 October
Partly cloudy. High 68°, low 42°.
Pressure29.80 inHg
Wind12.3 mph SW
Humidity48%
Visibility—
Dew point40°
Sun, 1857° / 47°0
57 °
Portal, Sunday, 18 October
Clear. High 57°, low 47°.
Pressure29.97 inHg
Wind19.1 mph NW
Humidity45%
Visibility—
Dew point32°
Mon, 1961° / 43°0
61 °
Portal, Monday, 19 October
Mostly clear. High 61°, low 43°.
Pressure30.09 inHg
Wind16.7 mph S
Humidity28%
Visibility—
Dew point23°
Tue, 2068° / 48°0
68 °
Portal, Tuesday, 20 October
Overcast. High 68°, low 48°.
Pressure29.74 inHg
Wind15.4 mph S
Humidity50%
Visibility—
Dew point42°
Wed, 2173° / 49°0
73 °
Portal, Wednesday, 21 October
Overcast. High 73°, low 49°.
Pressure29.62 inHg
Wind8.5 mph NW
Humidity47%
Visibility—
Dew point43°
Thu, 2253° / 46°0.01
53 °
Portal, Thursday, 22 October
Light rain. High 53°, low 46°.
Pressure29.83 inHg
Wind15.3 mph N
Humidity82%
Visibility—
Dew point43°
Fri, 2346° / 37°0.96
46 °
Portal, Friday, 23 October
Rain. High 46°, low 37°.
Pressure29.88 inHg
Wind16.2 mph N
Humidity69%
Visibility—
Dew point33°
Sat, 2447° / 32°0
47 °
Portal, Saturday, 24 October
Clear. High 47°, low 32°.
Pressure30.09 inHg
Wind7.3 mph NW
Humidity62%
Visibility—
Dew point29°
Sun, 2553° / 41°0
53 °
Portal, Sunday, 25 October
Overcast. High 53°, low 41°.
Pressure30.00 inHg
Wind6.6 mph NW
Humidity50%
Visibility—
Dew point31°
Mon, 2658° / 42°0
58 °
Portal, Monday, 26 October
Overcast. High 58°, low 42°.
Pressure29.88 inHg
Wind11.7 mph S
Humidity63%
Visibility—
Dew point41°
Tue, 2752° / 44°0.01
52 °
Portal, Tuesday, 27 October
Light rain. High 52°, low 44°.
Pressure29.80 inHg
Wind21.1 mph NW
Humidity64%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2846° / 31°0.06
46 °
Portal, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.06 in
Chance of precipitation12%
Record high66° (1965)
Record low0° (1984)
Thu, 2945° / 30°0.06
45 °
Portal, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.06 in
Chance of precipitation25%
Record high65° (2007)
Record low8° (1991)
Fri, 3044° / 29°0.03
44 °
Portal, Friday, 30 October
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.03 in
Chance of precipitation20%
Record high66° (1964)
Record low-3° (1984)
Sat, 3144° / 29°0.03
44 °
Portal, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.03 in
Chance of precipitation18%
Record high69° (1990)
Record low1° (1991)
Sun, 0143° / 29°0.05
43 °
Portal, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.05 in
Chance of precipitation28%
Record high67° (1983)
Record low-5° (1984)
Mon, 0242° / 28°0.04
42 °
Portal, Monday, 2 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.04 in
Chance of precipitation17%
Record high70° (1965)
Record low-5° (1984)
Tue, 0340° / 28°0.02
40 °
Portal, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.02 in
Chance of precipitation18%
Record high62° (1981)
Record low-9° (1991)
Wed, 0442° / 28°0.03
42 °
Portal, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.03 in
Chance of precipitation20%
Record high65° (2020)
Record low-6° (1991)
Thu, 0541° / 27°0.02
41 °
Portal, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.02 in
Chance of precipitation18%
Record high68° (2020)
Record low3° (1991)
Fri, 0640° / 25°0.03
40 °
Portal, Friday, 6 November
Climate normal for this date — 60-year average.
Average high40°
Average low25°
Average precipitation0.03 in
Chance of precipitation18%
Record high64° (2020)
Record low-16° (1991)
Sat, 0740° / 25°0.04
40 °
Portal, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high40°
Average low25°
Average precipitation0.04 in
Chance of precipitation20%
Record high67° (1999)
Record low-14° (2003)
Sun, 0838° / 25°0.04
38 °
Portal, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high38°
Average low25°
Average precipitation0.04 in
Chance of precipitation22%
Record high65° (1999)
Record low3° (2003)
Mon, 0935° / 22°0.04
35 °
Portal, Monday, 9 November
Climate normal for this date — 60-year average.
Average high35°
Average low22°
Average precipitation0.04 in
Chance of precipitation20%
Record high64° (2016)
Record low-1° (1986)
Tue, 1035° / 22°0.04
35 °
Portal, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high35°
Average low22°
Average precipitation0.04 in
Chance of precipitation20%
Record high60° (1961)
Record low-5° (1986)
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 Portal, ND 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 Portal, ND 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.