Monthly outlook for Portal, ND: average high 51.2°, average low 36.7°. That is 1.3° above the climate normal for October. Precipitation is expected on 2 days (about 1.6 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 22 October (70.3°), the coolest 16 October (28.2°).
51.2°/36.7°
Average high / low
+1.3°
Above normal
2 / 3
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
56.6°
50.7°
+3.3°
26 October – 4 November
42.1°
44.2°
-1.1°
5 November – 14 November
at normal
37.4°
—
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).
Sat, 1767° / 40°0
67 °
Portal, Saturday, 17 October
Mostly clear. High 67°, low 40°.
Pressure29.88 inHg
Wind10.2 mph SW
Humidity48%
Visibility6.2 mi
Dew point38°
Sun, 1856° / 40°0
56 °
Portal, Sunday, 18 October
Overcast. High 56°, low 40°.
Pressure30.15 inHg
Wind9.4 mph NW
Humidity46%
Visibility6.2 mi
Dew point32°
Mon, 1958° / 37°0
58 °
Portal, Monday, 19 October
Partly cloudy. High 58°, low 37°.
Pressure30.18 inHg
Wind9.6 mph SE
Humidity53%
Visibility6.2 mi
Dew point35°
Tue, 2062° / 41°0
62 °
Portal, Tuesday, 20 October
Clear. High 62°, low 41°.
Pressure29.97 inHg
Wind11.9 mph SE
Humidity72%
Visibility—
Dew point45°
Wed, 2155° / 45°0
55 °
Portal, Wednesday, 21 October
Clear. High 55°, low 45°.
Pressure30.18 inHg
Wind10.2 mph NW
Humidity63%
Visibility—
Dew point39°
Thu, 2270° / 42°0
70 °
Portal, Thursday, 22 October
Clear. High 70°, low 42°.
Pressure29.88 inHg
Wind16.9 mph S
Humidity35%
Visibility—
Dew point32°
Fri, 2360° / 51°0
60 °
Portal, Friday, 23 October
Overcast. High 60°, low 51°.
Pressure29.68 inHg
Wind16.1 mph N
Humidity47%
Visibility—
Dew point38°
Sat, 2448° / 34°1.5
48 °
Portal, Saturday, 24 October
Snow. High 48°, low 34°.
Pressure30.03 inHg
Wind19.6 mph NW
Humidity100%
Visibility—
Dew point35°
Sun, 2539° / 30°0
39 °
Portal, Sunday, 25 October
Overcast. High 39°, low 30°.
Pressure30.45 inHg
Wind8 mph W
Humidity68%
Visibility—
Dew point28°
Mon, 2639° / 29°0
39 °
Portal, Monday, 26 October
Overcast. High 39°, low 29°.
Pressure30.06 inHg
Wind13.1 mph SE
Humidity78%
Visibility—
Dew point30°
Tue, 2737° / 35°0.15
37 °
Portal, Tuesday, 27 October
Snow. High 37°, low 35°.
Pressure29.77 inHg
Wind12.3 mph W
Humidity98%
Visibility—
Dew point35°
Wed, 2842° / 36°0
42 °
Portal, Wednesday, 28 October
Overcast. High 42°, low 36°.
Pressure29.88 inHg
Wind6.2 mph NE
Humidity67%
Visibility—
Dew point30°
Thu, 2939° / 32°0
39 °
Portal, Thursday, 29 October
Overcast. High 39°, low 32°.
Pressure29.97 inHg
Wind6 mph NE
Humidity65%
Visibility—
Dew point26°
Fri, 3045° / 31°0
45 °
Portal, Friday, 30 October
Mostly clear. High 45°, low 31°.
Pressure29.83 inHg
Wind7.1 mph S
Humidity55%
Visibility—
Dew point26°
Sat, 3151° / 35°0
51 °
Portal, Saturday, 31 October
Overcast. High 51°, low 35°.
Pressure29.56 inHg
Wind9.7 mph SW
Humidity56%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 1135° / 21°0.02
35 °
Portal, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high35°
Average low21°
Average precipitation0.02 in
Chance of precipitation17%
Record high59° (1981)
Record low-6° (1986)
Thu, 1235° / 21°0.02
35 °
Portal, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high35°
Average low21°
Average precipitation0.02 in
Chance of precipitation13%
Record high66° (1999)
Record low-5° (1998)
Fri, 1337° / 22°0.03
37 °
Portal, Friday, 13 November
Climate normal for this date — 60-year average.
Average high37°
Average low22°
Average precipitation0.03 in
Chance of precipitation13%
Record high64° (1999)
Record low-8° (1986)
Sat, 1438° / 23°0.02
38 °
Portal, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high38°
Average low23°
Average precipitation0.02 in
Chance of precipitation12%
Record high59° (2016)
Record low1° (2000)
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.