Weather in Glen Arm, MD
Glen Arm, Tuesday, 20 October, 05:42
Clear. Feels like 48°. High 69°, low 44°.
Monthly outlook for Glen Arm, MD: average high 58.4°, average low 41.9°. That is 1.2° below the climate normal for October. Precipitation is expected on 2 days (about 1.2 inches), against a normal of 4 days and 2.0 inches. The warmest day looks like 27 October (70.4°), the coolest 29 October (36.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 61.5° | 61.3° | +0.1° |
| 30 October – 8 November | 53.3° | 58.5° | -2.9° |
| 9 November – 18 November | at normal | 53.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Parkville (6 mi).
0
Glen Arm, Wednesday, 21 October
Clear. High 65°, low 41°.
0Glen Arm, Thursday, 22 October
Clear. High 64°, low 44°.
0
Glen Arm, Friday, 23 October
Mostly clear. High 55°, low 42°.
0Glen Arm, Saturday, 24 October
Clear. High 58°, low 37°.
0Glen Arm, Sunday, 25 October
Clear. High 63°, low 38°.
0
Glen Arm, Monday, 26 October
Partly cloudy. High 68°, low 48°.
0
Glen Arm, Tuesday, 27 October
Overcast. High 70°, low 54°.
0Glen Arm, Wednesday, 28 October
Overcast. High 52°, low 40°.
0Glen Arm, Thursday, 29 October
Clear. High 51°, low 36°.
0Glen Arm, Friday, 30 October
Overcast. High 56°, low 40°.
0Glen Arm, Saturday, 31 October
Overcast. High 53°, low 48°.
0Glen Arm, Sunday, 1 November
Mostly clear. High 59°, low 42°.
0Glen Arm, Monday, 2 November
Overcast. High 52°, low 37°.
0.1
Glen Arm, Tuesday, 3 November
Light rain. High 54°, low 38°.
1.12Glen Arm, Wednesday, 4 November
Rain. High 46°, low 42°.
0.11Glen Arm, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Glen Arm, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Glen Arm, Saturday, 7 November
Climate normal for this date — 60-year average.
0.17Glen Arm, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Glen Arm, Monday, 9 November
Climate normal for this date — 60-year average.
0.15
Glen Arm, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.16Glen Arm, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.21Glen Arm, Thursday, 12 November
Climate normal for this date — 60-year average.
0.11Glen Arm, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Glen Arm, Saturday, 14 November
Climate normal for this date — 60-year average.
0.1Glen Arm, Sunday, 15 November
Climate normal for this date — 60-year average.
0.15Glen Arm, Monday, 16 November
Climate normal for this date — 60-year average.
0.08Glen Arm, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06Glen Arm, Wednesday, 18 November
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 Glen Arm, 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 Glen Arm, 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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