Monthly outlook for Port Mahon, DE: average high 54.4°, average low 42.5°. That is 0.7° above the climate normal for November. Precipitation is expected on 1 day (about 0.6 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 29 November (65.4°), the coolest 24 November (34.3°).
54.4°/42.5°
Average high / low
+0.7°
Above normal
1 / 4
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 November – 23 November
54.6°
53.5°
+0.6°
24 November – 3 December
54.1°
51.7°
+1.3°
4 December – 13 December
at normal
47.3°
—
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).
Sun, 1551° / 42°0
51 °
Port Mahon, Sunday, 15 November
Partly cloudy. High 51°, low 42°.
Pressure30.18 inHg
Wind13.3 mph NW
Humidity50%
Visibility6.2 mi
Dew point32°
Mon, 1652° / 39°0
52 °
Port Mahon, Monday, 16 November
Overcast. High 52°, low 39°.
Pressure30.45 inHg
Wind10.1 mph NW
Humidity53%
Visibility6.2 mi
Dew point34°
Tue, 1752° / 38°0
52 °
Port Mahon, Tuesday, 17 November
Clear. High 52°, low 38°.
Pressure30.53 inHg
Wind6.5 mph NW
Humidity61%
Visibility6.2 mi
Dew point38°
Wed, 1858° / 39°0
58 °
Port Mahon, Wednesday, 18 November
Clear. High 58°, low 39°.
Pressure30.47 inHg
Wind4.7 mph NW
Humidity57%
Visibility6.2 mi
Dew point40°
Thu, 1961° / 40°0
61 °
Port Mahon, Thursday, 19 November
Clear. High 61°, low 40°.
Pressure30.45 inHg
Wind6.9 mph SW
Humidity67%
Visibility—
Dew point40°
Fri, 2061° / 45°0
61 °
Port Mahon, Friday, 20 November
Clear. High 61°, low 45°.
Pressure30.30 inHg
Wind8.9 mph NW
Humidity57%
Visibility—
Dew point39°
Sat, 2155° / 46°0
55 °
Port Mahon, Saturday, 21 November
Clear. High 55°, low 46°.
Pressure30.39 inHg
Wind8.8 mph SE
Humidity64%
Visibility—
Dew point39°
Sun, 2260° / 48°0
60 °
Port Mahon, Sunday, 22 November
Overcast. High 60°, low 48°.
Pressure30.12 inHg
Wind15 mph S
Humidity76%
Visibility—
Dew point47°
Mon, 2349° / 40°0
49 °
Port Mahon, Monday, 23 November
Clear. High 49°, low 40°.
Pressure29.97 inHg
Wind23.4 mph W
Humidity50%
Visibility—
Dew point30°
Tue, 2446° / 34°0
46 °
Port Mahon, Tuesday, 24 November
Clear. High 46°, low 34°.
Pressure30.30 inHg
Wind18.6 mph NW
Humidity59%
Visibility—
Dew point26°
Wed, 2544° / 36°0
44 °
Port Mahon, Wednesday, 25 November
Overcast. High 44°, low 36°.
Pressure30.47 inHg
Wind10.1 mph S
Humidity54%
Visibility—
Dew point24°
Thu, 2653° / 42°0
53 °
Port Mahon, Thursday, 26 November
Overcast. High 53°, low 42°.
Pressure30.42 inHg
Wind8.3 mph S
Humidity68%
Visibility—
Dew point37°
Fri, 2756° / 48°0
56 °
Port Mahon, Friday, 27 November
Partly cloudy. High 56°, low 48°.
Pressure30.45 inHg
Wind7.5 mph SE
Humidity68%
Visibility—
Dew point42°
Sat, 2861° / 51°0
61 °
Port Mahon, Saturday, 28 November
Partly cloudy. High 61°, low 51°.
Pressure30.39 inHg
Wind14.3 mph S
Humidity89%
Visibility—
Dew point53°
Sun, 2965° / 52°0.56
65 °
Port Mahon, Sunday, 29 November
Rain. High 65°, low 52°.
Pressure30.06 inHg
Wind20.4 mph SW
Humidity78%
Visibility—
Dew point58°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 0947° / 35°0.2
47 °
Port Mahon, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.2 in
Chance of precipitation35%
Record high67° (1978)
Record low17° (1989)
Thu, 1048° / 36°0.13
48 °
Port Mahon, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.13 in
Chance of precipitation40%
Record high67° (1966)
Record low17° (1968)
Fri, 1147° / 36°0.19
47 °
Port Mahon, Friday, 11 December
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.19 in
Chance of precipitation38%
Record high67° (2021)
Record low19° (1968)
Sat, 1246° / 35°0.09
46 °
Port Mahon, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.09 in
Chance of precipitation20%
Record high66° (2015)
Record low13° (1988)
Sun, 1346° / 35°0.12
46 °
Port Mahon, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.12 in
Chance of precipitation27%
Record high68° (2015)
Record low10° (1960)
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.