Monthly outlook for Port Herman, MD: average high 60°, average low 44.5°. That is 2.6° above the climate normal for November. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 4 November (73.3°), the coolest 15 November (31.6°).
60°/44.5°
Average high / low
+2.6°
Above normal
3 / 4
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
3 November – 12 November
63°
56.9°
+3.4°
13 November – 22 November
54.9°
52.3°
+1.4°
23 November – 2 December
at normal
49.8°
—
November records over 66 years
78.1°1 November 2024All-time high
21.6°23 November 2018All-time low
Climate normals and records are computed from the nearest reference point — Aberdeen Proving Ground (12 mi).
Wed, 0473° / 48°0
73 °
Port Herman, Wednesday, 4 November
Clear. High 73°, low 48°.
Pressure30.12 inHg
Wind8.3 mph S
Humidity69%
Visibility6.2 mi
Dew point58°
Thu, 0571° / 54°0.09
71 °
Port Herman, Thursday, 5 November
Light rain. High 71°, low 54°.
Pressure29.91 inHg
Wind15.9 mph SW
Humidity80%
Visibility6.2 mi
Dew point64°
Fri, 0669° / 59°0.48
69 °
Port Herman, Friday, 6 November
Rain. High 69°, low 59°.
Pressure29.88 inHg
Wind2.9 mph NE
Humidity83%
Visibility4.2 mi
Dew point62°
Sat, 0765° / 51°0
65 °
Port Herman, Saturday, 7 November
Clear. High 65°, low 51°.
Pressure29.85 inHg
Wind9.8 mph NW
Humidity59%
Visibility6.2 mi
Dew point50°
Sun, 0861° / 48°0
61 °
Port Herman, Sunday, 8 November
Clear. High 61°, low 48°.
Pressure29.94 inHg
Wind13.6 mph NW
Humidity64%
Visibility—
Dew point44°
Mon, 0957° / 45°0
57 °
Port Herman, Monday, 9 November
Mostly clear. High 57°, low 45°.
Pressure30.09 inHg
Wind12.9 mph NW
Humidity57%
Visibility—
Dew point38°
Tue, 1060° / 42°0
60 °
Port Herman, Tuesday, 10 November
Clear. High 60°, low 42°.
Pressure30.09 inHg
Wind12.9 mph SW
Humidity51%
Visibility—
Dew point36°
Wed, 1156° / 43°0
56 °
Port Herman, Wednesday, 11 November
Overcast. High 56°, low 43°.
Pressure30.15 inHg
Wind10 mph NW
Humidity54%
Visibility—
Dew point34°
Thu, 1248° / 42°0.06
48 °
Port Herman, Thursday, 12 November
Light rain. High 48°, low 42°.
Pressure30.15 inHg
Wind5.6 mph E
Humidity59%
Visibility—
Dew point33°
Fri, 1353° / 40°0
53 °
Port Herman, Friday, 13 November
Light rain. High 53°, low 40°.
Pressure30.03 inHg
Wind6.6 mph NW
Humidity69%
Visibility—
Dew point38°
Sat, 1450° / 34°0
50 °
Port Herman, Saturday, 14 November
Clear. High 50°, low 34°.
Pressure30.03 inHg
Wind13.3 mph NW
Humidity55%
Visibility—
Dew point28°
Sun, 1552° / 32°0
52 °
Port Herman, Sunday, 15 November
Clear. High 52°, low 32°.
Pressure30.15 inHg
Wind8.8 mph NW
Humidity51%
Visibility—
Dew point26°
Mon, 1657° / 39°0
57 °
Port Herman, Monday, 16 November
Overcast. High 57°, low 39°.
Pressure30.18 inHg
Wind7.9 mph S
Humidity63%
Visibility—
Dew point36°
Tue, 1758° / 44°0
58 °
Port Herman, Tuesday, 17 November
Overcast. High 58°, low 44°.
Pressure30.21 inHg
Wind6.2 mph NE
Humidity80%
Visibility—
Dew point44°
Wed, 1858° / 47°0
58 °
Port Herman, Wednesday, 18 November
Overcast. High 58°, low 47°.
Pressure30.06 inHg
Wind12.9 mph NE
Humidity68%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 1952° / 40°0.1
52 °
Port Herman, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.1 in
Chance of precipitation27%
Record high66° (1985)
Record low24° (2014)
Fri, 2052° / 40°0.07
52 °
Port Herman, Friday, 20 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.07 in
Chance of precipitation23%
Record high72° (1985)
Record low28° (2022)
Sat, 2151° / 39°0.09
51 °
Port Herman, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.09 in
Chance of precipitation25%
Record high69° (1991)
Record low25° (2022)
Sun, 2250° / 39°0.11
50 °
Port Herman, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.11 in
Chance of precipitation30%
Record high69° (2007)
Record low23° (2018)
Mon, 2350° / 38°0.07
50 °
Port Herman, Monday, 23 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.07 in
Chance of precipitation25%
Record high65° (1979)
Record low22° (2018)
Tue, 2451° / 39°0.13
51 °
Port Herman, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.13 in
Chance of precipitation32%
Record high66° (1979)
Record low24° (1970)
Wed, 2550° / 38°0.11
50 °
Port Herman, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.11 in
Chance of precipitation37%
Record high69° (1979)
Record low22° (1989)
Thu, 2652° / 39°0.15
52 °
Port Herman, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.15 in
Chance of precipitation38%
Record high66° (1999)
Record low28° (2005)
Fri, 2751° / 39°0.09
51 °
Port Herman, Friday, 27 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.09 in
Chance of precipitation35%
Record high62° (1976)
Record low27° (1974)
Sat, 2852° / 40°0.17
52 °
Port Herman, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.17 in
Chance of precipitation30%
Record high66° (2011)
Record low26° (1996)
Sun, 2949° / 38°0.15
49 °
Port Herman, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.15 in
Chance of precipitation30%
Record high65° (1998)
Record low24° (2023)
Mon, 3048° / 37°0.12
48 °
Port Herman, Monday, 30 November
Climate normal for this date — 60-year average.
Average high48°
Average low37°
Average precipitation0.12 in
Chance of precipitation32%
Record high66° (2001)
Record low22° (1976)
Tue, 0148° / 37°0.12
48 °
Port Herman, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high48°
Average low37°
Average precipitation0.12 in
Chance of precipitation32%
Record high68° (2006)
Record low19° (1967)
Wed, 0247° / 36°0.12
47 °
Port Herman, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.12 in
Chance of precipitation27%
Record high64° (1970)
Record low13° (1967)
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 Herman, MD 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 Herman, MD 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.