Weather in Port Herman, MD
Port Herman, Tuesday, 10 November, 07:26
Overcast. Feels like 37°. High 66°, low 40°.
Monthly outlook for Port Herman, MD: average high 56.8°, average low 42.7°. That is 2.4° above the climate normal for November. Precipitation is expected on 5 days (about 2.4 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 23 November (69.7°), the coolest 16 November (35.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 November – 19 November | 54.5° | 53.5° | +0.5° |
| 20 November – 29 November | 60.6° | 50.8° | +5.4° |
| 30 November – 9 December | at normal | 46.7° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Aberdeen Proving Ground (12 mi).
0
Port Herman, Wednesday, 11 November
Clear. High 65°, low 44°.
0.4
Port Herman, Thursday, 12 November
Rain. High 57°, low 52°.
0.09Port Herman, Friday, 13 November
Light rain. High 51°, low 42°.
0.01Port Herman, Saturday, 14 November
Light rain. High 47°, low 41°.
0
Port Herman, Sunday, 15 November
Mostly clear. High 47°, low 39°.
0Port Herman, Monday, 16 November
Mostly clear. High 51°, low 35°.
0Port Herman, Tuesday, 17 November
Mostly clear. High 53°, low 37°.
0Port Herman, Wednesday, 18 November
Clear. High 53°, low 37°.
0Port Herman, Thursday, 19 November
Clear. High 54°, low 37°.
0Port Herman, Friday, 20 November
Overcast. High 56°, low 39°.
0Port Herman, Saturday, 21 November
Overcast. High 64°, low 45°.
1.11Port Herman, Sunday, 22 November
Rain. High 61°, low 59°.
0.48Port Herman, Monday, 23 November
Rain. High 70°, low 56°.
0.33Port Herman, Tuesday, 24 November
Rain. High 63°, low 43°.
0Port Herman, Wednesday, 25 November
Clear. High 49°, low 38°.
0.15
Port Herman, Thursday, 26 November
Climate normal for this date — 60-year average.
0.09Port Herman, Friday, 27 November
Climate normal for this date — 60-year average.
0.17
Port Herman, Saturday, 28 November
Climate normal for this date — 60-year average.
0.15Port Herman, Sunday, 29 November
Climate normal for this date — 60-year average.
0.12Port Herman, Monday, 30 November
Climate normal for this date — 60-year average.
0.12Port Herman, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.12Port Herman, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.1Port Herman, Thursday, 3 December
Climate normal for this date — 60-year average.
0.09Port Herman, Friday, 4 December
Climate normal for this date — 60-year average.
0.16Port Herman, Saturday, 5 December
Climate normal for this date — 60-year average.
0.1Port Herman, Sunday, 6 December
Climate normal for this date — 60-year average.
0.11Port Herman, Monday, 7 December
Climate normal for this date — 60-year average.
0.09Port Herman, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.2Port Herman, Wednesday, 9 December
Climate normal for this date — 60-year average.
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.
Sun and moon today
Weather history
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