Monthly outlook for Port Mahon, DE: average high 57.4°, average low 45.8°. That is 0.6° above the climate normal for November. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 4 November (75.2°), the coolest 18 November (34°).
57.4°/45.8°
Average high / low
+0.6°
Above normal
1 / 5
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
4 November – 13 November
62.1°
57.6°
+2.5°
14 November – 23 November
49.7°
53.5°
-2.1°
24 November – 3 December
at normal
51.7°
—
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).
Thu, 0574° / 57°0.05
74 °
Port Mahon, Thursday, 5 November
Light rain. High 74°, low 57°.
Pressure29.91 inHg
Wind17.7 mph SW
Humidity72%
Visibility6.2 mi
Dew point64°
Fri, 0672° / 58°0.03
72 °
Port Mahon, Friday, 6 November
Light rain. High 72°, low 58°.
Pressure29.88 inHg
Wind2.2 mph NW
Humidity69%
Visibility6.2 mi
Dew point61°
Sat, 0759° / 52°0
59 °
Port Mahon, Saturday, 7 November
Mostly clear. High 59°, low 52°.
Pressure29.91 inHg
Wind14.5 mph NW
Humidity56%
Visibility6.2 mi
Dew point42°
Sun, 0858° / 47°0
58 °
Port Mahon, Sunday, 8 November
Overcast. High 58°, low 47°.
Pressure30.00 inHg
Wind18.6 mph NW
Humidity58%
Visibility—
Dew point40°
Mon, 0958° / 49°0
58 °
Port Mahon, Monday, 9 November
Clear. High 58°, low 49°.
Pressure29.91 inHg
Wind22.4 mph NW
Humidity56%
Visibility—
Dew point38°
Tue, 1061° / 49°0
61 °
Port Mahon, Tuesday, 10 November
Overcast. High 61°, low 49°.
Pressure30.15 inHg
Wind10.2 mph NW
Humidity61%
Visibility—
Dew point41°
Wed, 1160° / 50°0
60 °
Port Mahon, Wednesday, 11 November
Mostly clear. High 60°, low 50°.
Pressure29.94 inHg
Wind12.6 mph N
Humidity61%
Visibility—
Dew point42°
Thu, 1250° / 43°0
50 °
Port Mahon, Thursday, 12 November
Clear. High 50°, low 43°.
Pressure30.00 inHg
Wind15.2 mph N
Humidity48%
Visibility—
Dew point27°
Fri, 1356° / 44°0
56 °
Port Mahon, Friday, 13 November
Partly cloudy. High 56°, low 44°.
Pressure29.77 inHg
Wind19.9 mph W
Humidity58%
Visibility—
Dew point36°
Sat, 1447° / 41°0
47 °
Port Mahon, Saturday, 14 November
Clear. High 47°, low 41°.
Pressure30.00 inHg
Wind20.8 mph NW
Humidity53%
Visibility—
Dew point28°
Sun, 1548° / 35°0
48 °
Port Mahon, Sunday, 15 November
Clear. High 48°, low 35°.
Pressure30.27 inHg
Wind11.5 mph NW
Humidity54%
Visibility—
Dew point26°
Mon, 1651° / 42°0.02
51 °
Port Mahon, Monday, 16 November
Light rain. High 51°, low 42°.
Pressure30.00 inHg
Wind16.5 mph NW
Humidity66%
Visibility—
Dew point38°
Tue, 1745° / 38°0
45 °
Port Mahon, Tuesday, 17 November
Clear. High 45°, low 38°.
Pressure30.00 inHg
Wind20.1 mph NW
Humidity63%
Visibility—
Dew point32°
Wed, 1849° / 34°0
49 °
Port Mahon, Wednesday, 18 November
Clear. High 49°, low 34°.
Pressure30.09 inHg
Wind14.5 mph NW
Humidity60%
Visibility—
Dew point28°
Thu, 1959° / 42°0
59 °
Port Mahon, Thursday, 19 November
Clear. High 59°, low 42°.
Pressure29.80 inHg
Wind18.5 mph SW
Humidity51%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2054° / 42°0.06
54 °
Port Mahon, Friday, 20 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.06 in
Chance of precipitation20%
Record high73° (1985)
Record low29° (2022)
Sat, 2153° / 40°0.09
53 °
Port Mahon, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.09 in
Chance of precipitation23%
Record high72° (1991)
Record low24° (2022)
Sun, 2251° / 40°0.11
51 °
Port Mahon, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.11 in
Chance of precipitation33%
Record high70° (2007)
Record low23° (2018)
Mon, 2351° / 39°0.08
51 °
Port Mahon, Monday, 23 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.08 in
Chance of precipitation23%
Record high69° (1979)
Record low21° (2018)
Tue, 2452° / 40°0.1
52 °
Port Mahon, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.1 in
Chance of precipitation27%
Record high70° (1979)
Record low25° (1970)
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)
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.