Monthly outlook for Mount Calvert, MD: average high 67.6°, average low 52.1°. That is 1.6° above the climate normal for October. Precipitation is expected on 3 days (about 1.3 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 14 October (85.5°), the coolest 19 October (40.6°).
67.6°/52.1°
Average high / low
+1.6°
Above normal
3 / 4
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
70.3°
65.8°
+2.5°
23 October – 1 November
63.1°
62.3°
+0.4°
2 November – 11 November
at normal
59.1°
—
October records over 66 years
94.5°2 October 2019All-time high
28.8°28 October 1976All-time low
Climate normals and records are computed from the nearest reference point — District Heights (11 mi).
Wed, 1485° / 66°0.03
85 °
Mount Calvert, Wednesday, 14 October
Light rain. High 85°, low 66°.
Pressure29.97 inHg
Wind6.8 mph SW
Humidity59%
Visibility6.2 mi
Dew point66°
Thu, 1571° / 59°0.4
71 °
Mount Calvert, Thursday, 15 October
Heavy rain. High 71°, low 59°.
Pressure30.21 inHg
Wind6.1 mph NE
Humidity62%
Visibility6.2 mi
Dew point52°
Fri, 1684° / 60°0.38
84 °
Mount Calvert, Friday, 16 October
Rain. High 84°, low 60°.
Pressure29.68 inHg
Wind12.7 mph SW
Humidity72%
Visibility6.2 mi
Dew point68°
Sat, 1756° / 48°0
56 °
Mount Calvert, Saturday, 17 October
Clear. High 56°, low 48°.
Pressure30.27 inHg
Wind15.1 mph NW
Humidity47%
Visibility—
Dew point33°
Sun, 1859° / 42°0
59 °
Mount Calvert, Sunday, 18 October
Clear. High 59°, low 42°.
Pressure30.53 inHg
Wind6.8 mph S
Humidity52%
Visibility—
Dew point36°
Mon, 1964° / 41°0
64 °
Mount Calvert, Monday, 19 October
Clear. High 64°, low 41°.
Pressure30.53 inHg
Wind9.6 mph S
Humidity55%
Visibility—
Dew point39°
Tue, 2068° / 50°0
68 °
Mount Calvert, Tuesday, 20 October
Overcast. High 68°, low 50°.
Pressure30.36 inHg
Wind4.8 mph SW
Humidity68%
Visibility—
Dew point49°
Wed, 2167° / 51°0
67 °
Mount Calvert, Wednesday, 21 October
Clear. High 67°, low 51°.
Pressure30.36 inHg
Wind7.3 mph NE
Humidity58%
Visibility—
Dew point47°
Thu, 2267° / 52°0
67 °
Mount Calvert, Thursday, 22 October
Clear. High 67°, low 52°.
Pressure30.47 inHg
Wind7.3 mph E
Humidity65%
Visibility—
Dew point49°
Fri, 2370° / 51°0
70 °
Mount Calvert, Friday, 23 October
Clear. High 70°, low 51°.
Pressure30.39 inHg
Wind10.6 mph S
Humidity66%
Visibility—
Dew point51°
Sat, 2471° / 57°0
71 °
Mount Calvert, Saturday, 24 October
Overcast. High 71°, low 57°.
Pressure30.21 inHg
Wind9.5 mph SW
Humidity66%
Visibility—
Dew point56°
Sun, 2563° / 56°0.02
63 °
Mount Calvert, Sunday, 25 October
Light rain. High 63°, low 56°.
Pressure30.24 inHg
Wind8.9 mph N
Humidity66%
Visibility—
Dew point47°
Mon, 2655° / 50°0.47
55 °
Mount Calvert, Monday, 26 October
Rain. High 55°, low 50°.
Pressure30.06 inHg
Wind9.9 mph N
Humidity78%
Visibility—
Dew point47°
Tue, 2758° / 47°0
58 °
Mount Calvert, Tuesday, 27 October
Overcast. High 58°, low 47°.
Pressure29.74 inHg
Wind11.5 mph NW
Humidity47%
Visibility—
Dew point35°
Wed, 2861° / 47°0
61 °
Mount Calvert, Wednesday, 28 October
Partly cloudy. High 61°, low 47°.
Pressure29.56 inHg
Wind14.3 mph W
Humidity62%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2961° / 46°0.24
61 °
Mount Calvert, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high61°
Average low46°
Average precipitation0.24 in
Chance of precipitation20%
Record high80° (2023)
Record low31° (1976)
Fri, 3061° / 45°0.11
61 °
Mount Calvert, Friday, 30 October
Climate normal for this date — 60-year average.
Average high61°
Average low45°
Average precipitation0.11 in
Chance of precipitation25%
Record high81° (2023)
Record low32° (2011)
Sat, 3162° / 46°0.05
62 °
Mount Calvert, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.05 in
Chance of precipitation17%
Record high79° (2024)
Record low33° (1988)
Sun, 0163° / 48°0.1
63 °
Mount Calvert, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high63°
Average low48°
Average precipitation0.1 in
Chance of precipitation23%
Record high82° (1974)
Record low34° (2002)
Mon, 0262° / 47°0.11
62 °
Mount Calvert, Monday, 2 November
Climate normal for this date — 60-year average.
Average high62°
Average low47°
Average precipitation0.11 in
Chance of precipitation32%
Record high79° (1971)
Record low31° (1976)
Tue, 0362° / 46°0.06
62 °
Mount Calvert, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.06 in
Chance of precipitation23%
Record high77° (2016)
Record low33° (1996)
Wed, 0460° / 44°0.12
60 °
Mount Calvert, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.12 in
Chance of precipitation27%
Record high81° (1974)
Record low29° (2006)
Thu, 0559° / 45°0.1
59 °
Mount Calvert, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high59°
Average low45°
Average precipitation0.1 in
Chance of precipitation25%
Record high77° (1961)
Record low27° (1991)
Fri, 0659° / 44°0.07
59 °
Mount Calvert, Friday, 6 November
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.07 in
Chance of precipitation23%
Record high79° (2024)
Record low28° (1967)
Sat, 0758° / 43°0.09
58 °
Mount Calvert, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.09 in
Chance of precipitation25%
Record high79° (2024)
Record low28° (1967)
Sun, 0858° / 42°0.15
58 °
Mount Calvert, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.15 in
Chance of precipitation25%
Record high75° (1975)
Record low28° (1967)
Mon, 0958° / 42°0.07
58 °
Mount Calvert, Monday, 9 November
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.07 in
Chance of precipitation22%
Record high77° (2023)
Record low26° (1976)
Tue, 1058° / 43°0.13
58 °
Mount Calvert, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.13 in
Chance of precipitation32%
Record high73° (2020)
Record low31° (1973)
Wed, 1156° / 42°0.2
56 °
Mount Calvert, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.2 in
Chance of precipitation27%
Record high73° (2024)
Record low23° (2017)
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 Calvert, 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 Calvert, 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.