Monthly outlook for Port Mahon, DE: average high 53.1°, average low 43°. That is 0.7° below the climate normal for November. Precipitation is expected on 4 days (about 2.3 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 10 November (62.7°), the coolest 23 November (36.9°).
53.1°/43°
Average high / low
−0.7°
Below normal
4 / 4
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 November – 18 November
54°
55.4°
-0.8°
19 November – 28 November
51.6°
52.9°
-0.7°
29 November – 8 December
at normal
48.9°
—
November records over 66 years
79°7 November 2024All-time high
20.8°23 November 2018All-time low
Climate normals and records are computed from the nearest reference point — Dover (7 mi).
Tue, 1063° / 45°0
63 °
Port Mahon, Tuesday, 10 November
Clear. High 63°, low 45°.
Pressure30.00 inHg
Wind12.2 mph SW
Humidity54%
Visibility6.2 mi
Dew point44°
Wed, 1161° / 46°0
61 °
Port Mahon, Wednesday, 11 November
Mostly clear. High 61°, low 46°.
Pressure29.97 inHg
Wind2 mph S
Humidity63%
Visibility6.2 mi
Dew point47°
Thu, 1259° / 52°0.63
59 °
Port Mahon, Thursday, 12 November
Rain. High 59°, low 52°.
Pressure29.53 inHg
Wind7.6 mph NE
Humidity91%
Visibility2.9 mi
Dew point55°
Fri, 1351° / 42°1.46
51 °
Port Mahon, Friday, 13 November
Heavy rain. High 51°, low 42°.
Pressure29.56 inHg
Wind19.9 mph N
Humidity92%
Visibility—
Dew point46°
Sat, 1446° / 40°0.07
46 °
Port Mahon, Saturday, 14 November
Light rain. High 46°, low 40°.
Pressure29.77 inHg
Wind21.4 mph W
Humidity61%
Visibility—
Dew point31°
Sun, 1549° / 44°0
49 °
Port Mahon, Sunday, 15 November
Overcast. High 49°, low 44°.
Pressure29.80 inHg
Wind22.4 mph W
Humidity64%
Visibility—
Dew point35°
Mon, 1647° / 42°0
47 °
Port Mahon, Monday, 16 November
Overcast. High 47°, low 42°.
Pressure30.00 inHg
Wind18.9 mph NW
Humidity65%
Visibility—
Dew point34°
Tue, 1751° / 41°0
51 °
Port Mahon, Tuesday, 17 November
Mostly clear. High 51°, low 41°.
Pressure30.33 inHg
Wind16.6 mph NW
Humidity65%
Visibility—
Dew point34°
Wed, 1852° / 40°0
52 °
Port Mahon, Wednesday, 18 November
Partly cloudy. High 52°, low 40°.
Pressure30.30 inHg
Wind11 mph NW
Humidity67%
Visibility—
Dew point35°
Thu, 1951° / 43°0
51 °
Port Mahon, Thursday, 19 November
Overcast. High 51°, low 43°.
Pressure30.30 inHg
Wind7.9 mph S
Humidity69%
Visibility—
Dew point38°
Fri, 2055° / 48°0
55 °
Port Mahon, Friday, 20 November
Overcast. High 55°, low 48°.
Pressure30.33 inHg
Wind6.1 mph SW
Humidity74%
Visibility—
Dew point42°
Sat, 2158° / 44°0.12
58 °
Port Mahon, Saturday, 21 November
Light rain. High 58°, low 44°.
Pressure30.18 inHg
Wind22.4 mph NW
Humidity71%
Visibility—
Dew point42°
Sun, 2246° / 39°0
46 °
Port Mahon, Sunday, 22 November
Clear. High 46°, low 39°.
Pressure30.42 inHg
Wind19.9 mph NW
Humidity61%
Visibility—
Dew point29°
Mon, 2346° / 37°0
46 °
Port Mahon, Monday, 23 November
Clear. High 46°, low 37°.
Pressure30.59 inHg
Wind8.4 mph N
Humidity55%
Visibility—
Dew point27°
Tue, 2454° / 39°0
54 °
Port Mahon, Tuesday, 24 November
Overcast. High 54°, low 39°.
Pressure30.47 inHg
Wind7.7 mph W
Humidity61%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2552° / 39°0.11
52 °
Port Mahon, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.11 in
Chance of precipitation32%
Record high70° (1973)
Record low25° (2005)
Thu, 2654° / 41°0.15
54 °
Port Mahon, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.15 in
Chance of precipitation37%
Record high69° (1999)
Record low28° (2005)
Fri, 2754° / 40°0.1
54 °
Port Mahon, Friday, 27 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.1 in
Chance of precipitation28%
Record high66° (1973)
Record low28° (1974)
Sat, 2854° / 42°0.12
54 °
Port Mahon, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.12 in
Chance of precipitation28%
Record high71° (1990)
Record low26° (1996)
Sun, 2951° / 39°0.14
51 °
Port Mahon, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.14 in
Chance of precipitation30%
Record high68° (1990)
Record low24° (2023)
Mon, 3050° / 39°0.1
50 °
Port Mahon, Monday, 30 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.1 in
Chance of precipitation28%
Record high69° (2001)
Record low24° (1976)
Tue, 0150° / 38°0.12
50 °
Port Mahon, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.12 in
Chance of precipitation30%
Record high71° (2006)
Record low20° (1967)
Wed, 0250° / 37°0.1
50 °
Port Mahon, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.1 in
Chance of precipitation22%
Record high64° (2018)
Record low21° (1967)
Thu, 0350° / 37°0.1
50 °
Port Mahon, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.1 in
Chance of precipitation27%
Record high69° (1991)
Record low20° (1976)
Fri, 0449° / 37°0.07
49 °
Port Mahon, Friday, 4 December
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.07 in
Chance of precipitation20%
Record high71° (1998)
Record low17° (1966)
Sat, 0547° / 37°0.15
47 °
Port Mahon, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.15 in
Chance of precipitation30%
Record high70° (1982)
Record low26° (1966)
Sun, 0649° / 37°0.11
49 °
Port Mahon, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.11 in
Chance of precipitation32%
Record high71° (1998)
Record low23° (2007)
Mon, 0747° / 36°0.12
47 °
Port Mahon, Monday, 7 December
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.12 in
Chance of precipitation23%
Record high73° (1998)
Record low19° (2002)
Tue, 0846° / 36°0.09
46 °
Port Mahon, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.09 in
Chance of precipitation30%
Record high68° (1978)
Record low23° (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 Mahon, DE 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 Mahon, DE 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.