Monthly outlook for San Mar, MD: average high 60.5°, average low 42°. That is 2.7° above the climate normal for November. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 4 November (71.3°), the coolest 14 November (29.2°).
60.5°/42°
Average high / low
+2.7°
Above normal
2 / 4
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
1 November – 10 November
65.2°
57.5°
+4.3°
11 November – 20 November
52.7°
52.1°
+0.3°
21 November – 30 November
at normal
49.2°
—
November records over 66 years
80.4°6 November 2024All-time high
11.8°17 November 1995All-time low
Climate normals and records are computed from the nearest reference point — Hagerstown (7 mi).
Mon, 0267° / 41°0
67 °
San Mar, Monday, 2 November
Overcast. High 67°, low 41°.
Pressure30.39 inHg
Wind6.5 mph S
Humidity37%
Visibility6.2 mi
Dew point38°
Tue, 0370° / 41°0
70 °
San Mar, Tuesday, 3 November
Overcast. High 70°, low 41°.
Pressure30.27 inHg
Wind6.1 mph S
Humidity40%
Visibility6.2 mi
Dew point42°
Wed, 0471° / 53°0
71 °
San Mar, Wednesday, 4 November
Clear. High 71°, low 53°.
Pressure30.09 inHg
Wind13.1 mph S
Humidity57%
Visibility6.2 mi
Dew point54°
Thu, 0571° / 60°0.28
71 °
San Mar, Thursday, 5 November
Light rain. High 71°, low 60°.
Pressure29.85 inHg
Wind12 mph S
Humidity79%
Visibility6.2 mi
Dew point62°
Fri, 0665° / 49°0
65 °
San Mar, Friday, 6 November
Overcast. High 65°, low 49°.
Pressure29.94 inHg
Wind8.8 mph NW
Humidity59%
Visibility—
Dew point45°
Sat, 0765° / 45°0
65 °
San Mar, Saturday, 7 November
Partly cloudy. High 65°, low 45°.
Pressure29.94 inHg
Wind15.1 mph NW
Humidity63%
Visibility—
Dew point47°
Sun, 0859° / 39°0
59 °
San Mar, Sunday, 8 November
Mostly clear. High 59°, low 39°.
Pressure29.97 inHg
Wind8 mph NW
Humidity54%
Visibility—
Dew point35°
Mon, 0958° / 41°0
58 °
San Mar, Monday, 9 November
Overcast. High 58°, low 41°.
Pressure30.03 inHg
Wind6.5 mph SE
Humidity52%
Visibility—
Dew point35°
Tue, 1062° / 43°0
62 °
San Mar, Tuesday, 10 November
Clear. High 62°, low 43°.
Pressure30.03 inHg
Wind8.5 mph N
Humidity57%
Visibility—
Dew point39°
Wed, 1160° / 40°0
60 °
San Mar, Wednesday, 11 November
Clear. High 60°, low 40°.
Pressure29.97 inHg
Wind19.3 mph NW
Humidity50%
Visibility—
Dew point35°
Thu, 1251° / 35°0
51 °
San Mar, Thursday, 12 November
Overcast. High 51°, low 35°.
Pressure30.24 inHg
Wind11.9 mph NW
Humidity49%
Visibility—
Dew point26°
Fri, 1347° / 31°0
47 °
San Mar, Friday, 13 November
Clear. High 47°, low 31°.
Pressure30.42 inHg
Wind6.3 mph NE
Humidity49%
Visibility—
Dew point23°
Sat, 1453° / 29°0
53 °
San Mar, Saturday, 14 November
Partly cloudy. High 53°, low 29°.
Pressure30.45 inHg
Wind12.7 mph S
Humidity45%
Visibility—
Dew point22°
Sun, 1551° / 38°0.17
51 °
San Mar, Sunday, 15 November
Rain. High 51°, low 38°.
Pressure30.03 inHg
Wind9.1 mph S
Humidity89%
Visibility—
Dew point39°
Mon, 1653° / 48°0.01
53 °
San Mar, Monday, 16 November
Light rain. High 53°, low 48°.
Pressure29.85 inHg
Wind18.1 mph NW
Humidity63%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 1751° / 36°0.08
51 °
San Mar, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.08 in
Chance of precipitation22%
Record high68° (1963)
Record low12° (1995)
Wed, 1851° / 37°0.06
51 °
San Mar, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.06 in
Chance of precipitation28%
Record high71° (1963)
Record low24° (2014)
Thu, 1952° / 37°0.09
52 °
San Mar, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.09 in
Chance of precipitation23%
Record high69° (1985)
Record low20° (2014)
Fri, 2051° / 37°0.07
51 °
San Mar, Friday, 20 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.07 in
Chance of precipitation22%
Record high72° (1985)
Record low20° (1984)
Sat, 2149° / 36°0.11
49 °
San Mar, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.11 in
Chance of precipitation28%
Record high70° (2007)
Record low23° (1984)
Sun, 2249° / 36°0.11
49 °
San Mar, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.11 in
Chance of precipitation32%
Record high66° (2007)
Record low22° (1987)
Mon, 2349° / 34°0.06
49 °
San Mar, Monday, 23 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.06 in
Chance of precipitation22%
Record high69° (1979)
Record low18° (1989)
Tue, 2450° / 35°0.13
50 °
San Mar, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.13 in
Chance of precipitation33%
Record high68° (1999)
Record low14° (1989)
Wed, 2550° / 35°0.09
50 °
San Mar, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.09 in
Chance of precipitation30%
Record high70° (1973)
Record low20° (1970)
Thu, 2651° / 36°0.17
51 °
San Mar, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.17 in
Chance of precipitation33%
Record high65° (2025)
Record low24° (1971)
Fri, 2749° / 36°0.11
49 °
San Mar, Friday, 27 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.11 in
Chance of precipitation35%
Record high67° (1976)
Record low24° (1974)
Sat, 2850° / 36°0.21
50 °
San Mar, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.21 in
Chance of precipitation35%
Record high69° (1990)
Record low24° (2014)
Sun, 2948° / 34°0.13
48 °
San Mar, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.13 in
Chance of precipitation33%
Record high66° (1998)
Record low22° (2023)
Mon, 3047° / 35°0.11
47 °
San Mar, Monday, 30 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.11 in
Chance of precipitation32%
Record high68° (2001)
Record low17° (1976)
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.