Weather in San Mar, MD
San Mar, Tuesday, 20 October, 13:36
Clear. Feels like 66°. High 68°, low 43°.
Monthly outlook for San Mar, MD: average high 59.4°, average low 37.6°. That is 0.6° below the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 27 October (70.8°), the coolest 31 October (27.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 61.4° | 61.2° | +0.1° |
| 30 October – 8 November | 56.1° | 58.3° | -1.2° |
| 9 November – 18 November | at normal | 53° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Hagerstown (7 mi).
0San Mar, Wednesday, 21 October
Clear. High 65°, low 37°.
0San Mar, Thursday, 22 October
Clear. High 66°, low 36°.
0San Mar, Friday, 23 October
Clear. High 56°, low 40°.
0San Mar, Saturday, 24 October
Clear. High 57°, low 36°.
0San Mar, Sunday, 25 October
Clear. High 62°, low 38°.
0
San Mar, Monday, 26 October
Mostly clear. High 67°, low 44°.
0.03
San Mar, Tuesday, 27 October
Light rain. High 71°, low 47°.
0.01San Mar, Wednesday, 28 October
Light rain. High 50°, low 35°.
0San Mar, Thursday, 29 October
Clear. High 54°, low 31°.
0San Mar, Friday, 30 October
Clear. High 54°, low 35°.
0San Mar, Saturday, 31 October
Clear. High 52°, low 28°.
0
San Mar, Sunday, 1 November
Overcast. High 56°, low 37°.
0San Mar, Monday, 2 November
Clear. High 59°, low 36°.
0San Mar, Tuesday, 3 November
Mostly clear. High 58°, low 38°.
0.06San Mar, Wednesday, 4 November
Light rain. High 58°, low 40°.
0.11
San Mar, Thursday, 5 November
Climate normal for this date — 60-year average.
0.06San Mar, Friday, 6 November
Climate normal for this date — 60-year average.
0.09San Mar, Saturday, 7 November
Climate normal for this date — 60-year average.
0.15San Mar, Sunday, 8 November
Climate normal for this date — 60-year average.
0.07San Mar, Monday, 9 November
Climate normal for this date — 60-year average.
0.15San Mar, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.13San Mar, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.17
San Mar, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07San Mar, Friday, 13 November
Climate normal for this date — 60-year average.
0.07San Mar, Saturday, 14 November
Climate normal for this date — 60-year average.
0.11San Mar, Sunday, 15 November
Climate normal for this date — 60-year average.
0.12San Mar, Monday, 16 November
Climate normal for this date — 60-year average.
0.08San Mar, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06San Mar, 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 San Mar, 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 San Mar, 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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