Weather in Glenallen, MD
Glenallen, Saturday, 14 November, 07:13
Overcast. Feels like 35°. High 49°, low 39°.
Monthly outlook for Glenallen, MD: average high 53.9°, average low 39.8°. That is 1° above the climate normal for November. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 19 November (63.2°), the coolest 27 November (32.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 14 November – 23 November | 56.7° | 52.6° | +2.3° |
| 24 November – 3 December | 49.4° | 50.3° | -0.5° |
| 4 December – 13 December | at normal | 45.9° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Glenmont (1 mi).
0Glenallen, Sunday, 15 November
Overcast. High 52°, low 42°.
0Glenallen, Monday, 16 November
Overcast. High 53°, low 37°.
0
Glenallen, Tuesday, 17 November
Clear. High 53°, low 35°.
0Glenallen, Wednesday, 18 November
Clear. High 58°, low 38°.
0Glenallen, Thursday, 19 November
Clear. High 63°, low 38°.
0Glenallen, Friday, 20 November
Clear. High 63°, low 48°.
0Glenallen, Saturday, 21 November
Clear. High 55°, low 43°.
0Glenallen, Sunday, 22 November
Overcast. High 58°, low 43°.
0Glenallen, Monday, 23 November
Clear. High 62°, low 46°.
0Glenallen, Tuesday, 24 November
Clear. High 49°, low 39°.
0Glenallen, Wednesday, 25 November
Clear. High 51°, low 37°.
0
Glenallen, Thursday, 26 November
Partly cloudy. High 54°, low 40°.
0Glenallen, Friday, 27 November
Overcast. High 46°, low 32°.
0.11
Glenallen, Saturday, 28 November
Light rain. High 50°, low 37°.
0.03Glenallen, Sunday, 29 November
Light rain. High 45°, low 41°.
0.12
Glenallen, Monday, 30 November
Climate normal for this date — 60-year average.
0.15Glenallen, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.09Glenallen, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.09Glenallen, Thursday, 3 December
Climate normal for this date — 60-year average.
0.08Glenallen, Friday, 4 December
Climate normal for this date — 60-year average.
0.15Glenallen, Saturday, 5 December
Climate normal for this date — 60-year average.
0.1Glenallen, Sunday, 6 December
Climate normal for this date — 60-year average.
0.12Glenallen, Monday, 7 December
Climate normal for this date — 60-year average.
0.07Glenallen, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.18Glenallen, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.16Glenallen, Thursday, 10 December
Climate normal for this date — 60-year average.
0.17Glenallen, Friday, 11 December
Climate normal for this date — 60-year average.
0.07Glenallen, Saturday, 12 December
Climate normal for this date — 60-year average.
0.12Glenallen, Sunday, 13 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 Glenallen, 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 Glenallen, 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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