Monthly outlook for Mount Vernon, MD: average high 66.9°, average low 51.4°. That is 1.6° above the climate normal for October. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 31 October (78.6°), the coolest 18 October (40.8°).
66.9°/51.4°
Average high / low
+1.6°
Above normal
2 / 4
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
63.9°
64.9°
-0.5°
28 October – 6 November
71.9°
62.2°
+5.4°
7 November – 16 November
at normal
57.8°
—
October records over 66 years
92.5°2 October 2019All-time high
32.9°24 October 1969All-time low
Climate normals and records are computed from the nearest reference point — Princess Anne (5 mi).
Mon, 1961° / 45°0
61 °
Mount Vernon, Monday, 19 October
Clear. High 61°, low 45°.
Pressure30.36 inHg
Wind12 mph N
Humidity55%
Visibility6.2 mi
Dew point44°
Tue, 2067° / 49°0
67 °
Mount Vernon, Tuesday, 20 October
Clear. High 67°, low 49°.
Pressure30.18 inHg
Wind12.5 mph N
Humidity48%
Visibility6.2 mi
Dew point43°
Wed, 2161° / 47°0
61 °
Mount Vernon, Wednesday, 21 October
Clear. High 61°, low 47°.
Pressure30.18 inHg
Wind11.1 mph N
Humidity55%
Visibility6.2 mi
Dew point42°
Thu, 2263° / 45°0
63 °
Mount Vernon, Thursday, 22 October
Clear. High 63°, low 45°.
Pressure30.12 inHg
Wind8 mph N
Humidity50%
Visibility6.2 mi
Dew point40°
Fri, 2357° / 45°0
57 °
Mount Vernon, Friday, 23 October
Clear. High 57°, low 45°.
Pressure30.36 inHg
Wind10.7 mph N
Humidity49%
Visibility—
Dew point33°
Sat, 2462° / 43°0
62 °
Mount Vernon, Saturday, 24 October
Clear. High 62°, low 43°.
Pressure30.62 inHg
Wind10.4 mph E
Humidity53%
Visibility—
Dew point39°
Sun, 2566° / 46°0
66 °
Mount Vernon, Sunday, 25 October
Clear. High 66°, low 46°.
Pressure30.53 inHg
Wind6.4 mph W
Humidity53%
Visibility—
Dew point42°
Mon, 2671° / 53°0
71 °
Mount Vernon, Monday, 26 October
Mostly clear. High 71°, low 53°.
Pressure30.36 inHg
Wind5.2 mph SW
Humidity46%
Visibility—
Dew point43°
Tue, 2772° / 54°0
72 °
Mount Vernon, Tuesday, 27 October
Overcast. High 72°, low 54°.
Pressure30.33 inHg
Wind9.3 mph N
Humidity50%
Visibility—
Dew point46°
Wed, 2868° / 52°0
68 °
Mount Vernon, Wednesday, 28 October
Overcast. High 68°, low 52°.
Pressure30.42 inHg
Wind8.7 mph SE
Humidity52%
Visibility—
Dew point45°
Thu, 2968° / 57°0.07
68 °
Mount Vernon, Thursday, 29 October
Light rain. High 68°, low 57°.
Pressure30.12 inHg
Wind9.6 mph S
Humidity90%
Visibility—
Dew point60°
Fri, 3078° / 64°0.09
78 °
Mount Vernon, Friday, 30 October
Light rain. High 78°, low 64°.
Pressure30.00 inHg
Wind8.8 mph SW
Humidity75%
Visibility—
Dew point63°
Sat, 3179° / 62°0
79 °
Mount Vernon, Saturday, 31 October
Mostly clear. High 79°, low 62°.
Pressure30.06 inHg
Wind7.6 mph S
Humidity62%
Visibility—
Dew point58°
Sun, 0176° / 65°0.03
76 °
Mount Vernon, Sunday, 1 November
Light rain. High 76°, low 65°.
Pressure30.06 inHg
Wind10.1 mph S
Humidity90%
Visibility—
Dew point66°
Mon, 0262° / 52°0
62 °
Mount Vernon, Monday, 2 November
Overcast. High 62°, low 52°.
Pressure30.36 inHg
Wind12.1 mph N
Humidity48%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0363° / 50°0.08
63 °
Mount Vernon, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high63°
Average low50°
Average precipitation0.08 in
Chance of precipitation25%
Record high76° (2016)
Record low37° (1980)
Wed, 0461° / 49°0.09
61 °
Mount Vernon, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high61°
Average low49°
Average precipitation0.09 in
Chance of precipitation32%
Record high76° (2003)
Record low35° (2006)
Thu, 0561° / 49°0.1
61 °
Mount Vernon, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high61°
Average low49°
Average precipitation0.1 in
Chance of precipitation32%
Record high78° (2022)
Record low33° (2006)
Fri, 0660° / 48°0.09
60 °
Mount Vernon, Friday, 6 November
Climate normal for this date — 60-year average.
Average high60°
Average low48°
Average precipitation0.09 in
Chance of precipitation27%
Record high78° (2022)
Record low34° (2012)
Sat, 0760° / 47°0.07
60 °
Mount Vernon, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high60°
Average low47°
Average precipitation0.07 in
Chance of precipitation22%
Record high80° (2024)
Record low33° (1962)
Sun, 0859° / 46°0.08
59 °
Mount Vernon, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high59°
Average low46°
Average precipitation0.08 in
Chance of precipitation27%
Record high73° (1986)
Record low32° (1960)
Mon, 0959° / 46°0.07
59 °
Mount Vernon, Monday, 9 November
Climate normal for this date — 60-year average.
Average high59°
Average low46°
Average precipitation0.07 in
Chance of precipitation25%
Record high76° (1986)
Record low28° (2019)
Tue, 1060° / 47°0.11
60 °
Mount Vernon, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high60°
Average low47°
Average precipitation0.11 in
Chance of precipitation32%
Record high75° (2020)
Record low34° (2017)
Wed, 1158° / 47°0.13
58 °
Mount Vernon, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high58°
Average low47°
Average precipitation0.13 in
Chance of precipitation30%
Record high76° (2020)
Record low24° (2017)
Thu, 1257° / 45°0.24
57 °
Mount Vernon, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high57°
Average low45°
Average precipitation0.24 in
Chance of precipitation38%
Record high73° (2022)
Record low29° (2017)
Fri, 1356° / 44°0.16
56 °
Mount Vernon, Friday, 13 November
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.16 in
Chance of precipitation27%
Record high69° (1985)
Record low26° (2019)
Sat, 1456° / 43°0.07
56 °
Mount Vernon, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high56°
Average low43°
Average precipitation0.07 in
Chance of precipitation20%
Record high73° (1985)
Record low23° (2019)
Sun, 1557° / 44°0.12
57 °
Mount Vernon, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high57°
Average low44°
Average precipitation0.12 in
Chance of precipitation30%
Record high77° (1993)
Record low30° (1996)
Mon, 1656° / 44°0.09
56 °
Mount Vernon, Monday, 16 November
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.09 in
Chance of precipitation33%
Record high71° (2005)
Record low27° (1967)
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 Mount Vernon, 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 Mount Vernon, 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.