Monthly outlook for Marlo Heights, VA: average high 67.8°, average low 49.9°. That is 2.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 16 October (87.7°), the coolest 18 October (40.2°).
67.8°/49.9°
Average high / low
+2.3°
Above normal
2 / 4
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
67.4°
64.8°
+1.4°
25 October – 3 November
68.4°
61.8°
+3.7°
4 November – 13 November
at normal
57.4°
—
October records over 66 years
93.6°2 October 2019All-time high
29.8°28 October 1976All-time low
Climate normals and records are computed from the nearest reference point — West Falls Church (1 mi).
Fri, 1688° / 64°0.14
88 °
Marlo Heights, Friday, 16 October
Rain. High 88°, low 64°.
Pressure29.80 inHg
Wind8.9 mph SW
Humidity72%
Visibility6.2 mi
Dew point69°
Sat, 1766° / 46°0.02
66 °
Marlo Heights, Saturday, 17 October
Light rain. High 66°, low 46°.
Pressure30.24 inHg
Wind13.4 mph N
Humidity50%
Visibility6.2 mi
Dew point36°
Sun, 1858° / 40°0
58 °
Marlo Heights, Sunday, 18 October
Clear. High 58°, low 40°.
Pressure30.62 inHg
Wind5.1 mph NE
Humidity44%
Visibility6.2 mi
Dew point32°
Mon, 1961° / 43°0
61 °
Marlo Heights, Monday, 19 October
Overcast. High 61°, low 43°.
Pressure30.47 inHg
Wind8.2 mph N
Humidity48%
Visibility6.2 mi
Dew point38°
Tue, 2067° / 47°0
67 °
Marlo Heights, Tuesday, 20 October
Clear. High 67°, low 47°.
Pressure30.21 inHg
Wind11 mph N
Humidity52%
Visibility—
Dew point40°
Wed, 2165° / 49°0
65 °
Marlo Heights, Wednesday, 21 October
Clear. High 65°, low 49°.
Pressure30.30 inHg
Wind9.2 mph N
Humidity54%
Visibility—
Dew point41°
Thu, 2265° / 48°0
65 °
Marlo Heights, Thursday, 22 October
Clear. High 65°, low 48°.
Pressure30.42 inHg
Wind4.8 mph E
Humidity59%
Visibility—
Dew point44°
Fri, 2366° / 48°0
66 °
Marlo Heights, Friday, 23 October
Clear. High 66°, low 48°.
Pressure30.36 inHg
Wind3.4 mph N
Humidity57%
Visibility—
Dew point43°
Sat, 2468° / 52°0
68 °
Marlo Heights, Saturday, 24 October
Clear. High 68°, low 52°.
Pressure30.36 inHg
Wind6 mph E
Humidity58%
Visibility—
Dew point46°
Sun, 2563° / 49°0
63 °
Marlo Heights, Sunday, 25 October
Clear. High 63°, low 49°.
Pressure30.47 inHg
Wind5.1 mph E
Humidity58%
Visibility—
Dew point42°
Mon, 2669° / 49°0
69 °
Marlo Heights, Monday, 26 October
Clear. High 69°, low 49°.
Pressure30.45 inHg
Wind4.7 mph N
Humidity55%
Visibility—
Dew point44°
Tue, 2768° / 51°0
68 °
Marlo Heights, Tuesday, 27 October
Clear. High 68°, low 51°.
Pressure30.47 inHg
Wind4 mph NE
Humidity39%
Visibility—
Dew point35°
Wed, 2868° / 49°0
68 °
Marlo Heights, Wednesday, 28 October
Overcast. High 68°, low 49°.
Pressure30.45 inHg
Wind4 mph S
Humidity46%
Visibility—
Dew point38°
Thu, 2971° / 51°0
71 °
Marlo Heights, Thursday, 29 October
Mostly clear. High 71°, low 51°.
Pressure30.33 inHg
Wind6 mph S
Humidity50%
Visibility—
Dew point42°
Fri, 3072° / 52°0.02
72 °
Marlo Heights, Friday, 30 October
Light rain. High 72°, low 52°.
Pressure30.18 inHg
Wind6.4 mph SW
Humidity46%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3162° / 46°0.05
62 °
Marlo Heights, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.05 in
Chance of precipitation18%
Record high79° (2024)
Record low33° (2011)
Sun, 0162° / 48°0.1
62 °
Marlo Heights, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high62°
Average low48°
Average precipitation0.1 in
Chance of precipitation25%
Record high82° (1974)
Record low37° (2002)
Mon, 0262° / 47°0.11
62 °
Marlo Heights, Monday, 2 November
Climate normal for this date — 60-year average.
Average high62°
Average low47°
Average precipitation0.11 in
Chance of precipitation30%
Record high79° (1971)
Record low33° (2023)
Tue, 0362° / 46°0.06
62 °
Marlo Heights, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.06 in
Chance of precipitation25%
Record high76° (2003)
Record low33° (1996)
Wed, 0460° / 44°0.13
60 °
Marlo Heights, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.13 in
Chance of precipitation20%
Record high81° (1974)
Record low30° (2006)
Thu, 0559° / 44°0.08
59 °
Marlo Heights, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.08 in
Chance of precipitation27%
Record high78° (1961)
Record low27° (1991)
Fri, 0659° / 44°0.06
59 °
Marlo Heights, Friday, 6 November
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.06 in
Chance of precipitation22%
Record high79° (2024)
Record low29° (1967)
Sat, 0758° / 44°0.1
58 °
Marlo Heights, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.1 in
Chance of precipitation23%
Record high78° (2024)
Record low28° (1962)
Sun, 0858° / 43°0.16
58 °
Marlo Heights, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.16 in
Chance of precipitation22%
Record high75° (1975)
Record low28° (1960)
Mon, 0958° / 43°0.07
58 °
Marlo Heights, Monday, 9 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.07 in
Chance of precipitation23%
Record high78° (2023)
Record low27° (1976)
Tue, 1058° / 43°0.13
58 °
Marlo Heights, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.13 in
Chance of precipitation30%
Record high72° (1975)
Record low31° (1973)
Wed, 1156° / 42°0.2
56 °
Marlo Heights, 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 low22° (2017)
Thu, 1254° / 41°0.24
54 °
Marlo Heights, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.24 in
Chance of precipitation33%
Record high71° (1964)
Record low29° (1987)
Fri, 1353° / 39°0.1
53 °
Marlo Heights, Friday, 13 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.1 in
Chance of precipitation30%
Record high72° (1964)
Record low22° (2019)
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 Marlo Heights, VA 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 Marlo Heights, VA 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.