Weather in San Mar, MD
San Mar, Thursday, 29 October, 12:08
Clear. Feels like 62°. High 67°, low 48°.
Monthly outlook for San Mar, MD: average high 60°, average low 43.4°. That is 1.7° above the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 3 November (69.3°), the coolest 8 November (31.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 29 October – 7 November | 65° | 58.6° | +3.6° |
| 8 November – 17 November | 51.8° | 53.5° | -0.9° |
| 18 November – 27 November | at normal | 50.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Hagerstown (7 mi).
0San Mar, Friday, 30 October
Clear. High 68°, low 44°.
0
San Mar, Saturday, 31 October
Overcast. High 59°, low 42°.
0San Mar, Sunday, 1 November
Overcast. High 63°, low 48°.
0
San Mar, Monday, 2 November
Mostly clear. High 68°, low 46°.
0San Mar, Tuesday, 3 November
Mostly clear. High 69°, low 47°.
0
San Mar, Wednesday, 4 November
Partly cloudy. High 67°, low 49°.
0.32
San Mar, Thursday, 5 November
Rain. High 64°, low 56°.
0.49San Mar, Friday, 6 November
Rain. High 69°, low 56°.
0San Mar, Saturday, 7 November
Overcast. High 55°, low 39°.
0San Mar, Sunday, 8 November
Clear. High 50°, low 31°.
0San Mar, Monday, 9 November
Overcast. High 50°, low 32°.
0San Mar, Tuesday, 10 November
Overcast. High 51°, low 41°.
0.02San Mar, Wednesday, 11 November
Light rain. High 46°, low 41°.
0San Mar, Thursday, 12 November
Clear. High 55°, low 35°.
0San Mar, Friday, 13 November
Mostly clear. High 58°, low 38°.
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.
0.09San Mar, Thursday, 19 November
Climate normal for this date — 60-year average.
0.07San Mar, Friday, 20 November
Climate normal for this date — 60-year average.
0.11San Mar, Saturday, 21 November
Climate normal for this date — 60-year average.
0.11San Mar, Sunday, 22 November
Climate normal for this date — 60-year average.
0.06San Mar, Monday, 23 November
Climate normal for this date — 60-year average.
0.13
San Mar, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.09San Mar, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.17San Mar, Thursday, 26 November
Climate normal for this date — 60-year average.
0.11San Mar, Friday, 27 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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