Monthly outlook for Markham, VA: average high 64.8°, average low 46.9°. That is 0.3° above the climate normal for October. Precipitation is expected on 4 days (about 2.1 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 14 October (87.2°), the coolest 18 October (30.5°).
64.8°/46.9°
Average high / low
+0.3°
Above normal
4 / 4
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
70.4°
65.4°
+2.7°
22 October – 31 October
55.5°
61.8°
-3.5°
1 November – 10 November
at normal
58.8°
—
October records over 66 years
92.7°2 October 2019All-time high
27.1°30 October 2011All-time low
Climate normals and records are computed from the nearest reference point — The Plains (13 mi).
Tue, 1385° / 53°0
85 °
Markham, Tuesday, 13 October
Clear. High 85°, low 53°.
Pressure29.97 inHg
Wind6.8 mph SW
Humidity54%
Visibility6.2 mi
Dew point62°
Wed, 1487° / 68°0
87 °
Markham, Wednesday, 14 October
Light rain. High 87°, low 68°.
Pressure29.97 inHg
Wind8.3 mph W
Humidity59%
Visibility6.2 mi
Dew point67°
Thu, 1571° / 63°0.47
71 °
Markham, Thursday, 15 October
Rain. High 71°, low 63°.
Pressure30.21 inHg
Wind3.5 mph E
Humidity70%
Visibility6.2 mi
Dew point57°
Fri, 1683° / 57°0.04
83 °
Markham, Friday, 16 October
Light rain. High 83°, low 57°.
Pressure29.68 inHg
Wind21.5 mph NW
Humidity64%
Visibility—
Dew point67°
Sat, 1756° / 34°0
56 °
Markham, Saturday, 17 October
Clear. High 56°, low 34°.
Pressure30.39 inHg
Wind15.7 mph NW
Humidity47%
Visibility—
Dew point33°
Sun, 1852° / 30°0
52 °
Markham, Sunday, 18 October
Clear. High 52°, low 30°.
Pressure30.71 inHg
Wind8.1 mph S
Humidity35%
Visibility—
Dew point17°
Mon, 1965° / 35°0
65 °
Markham, Monday, 19 October
Clear. High 65°, low 35°.
Pressure30.56 inHg
Wind3.8 mph SE
Humidity36%
Visibility—
Dew point27°
Tue, 2066° / 44°0
66 °
Markham, Tuesday, 20 October
Overcast. High 66°, low 44°.
Pressure30.39 inHg
Wind2.9 mph NW
Humidity48%
Visibility—
Dew point38°
Wed, 2167° / 45°0
67 °
Markham, Wednesday, 21 October
Clear. High 67°, low 45°.
Pressure30.36 inHg
Wind5.1 mph SE
Humidity52%
Visibility—
Dew point41°
Thu, 2264° / 47°0.02
64 °
Markham, Thursday, 22 October
Light rain. High 64°, low 47°.
Pressure30.27 inHg
Wind11.9 mph S
Humidity70%
Visibility—
Dew point47°
Fri, 2361° / 49°1.39
61 °
Markham, Friday, 23 October
Heavy rain. High 61°, low 49°.
Pressure29.80 inHg
Wind15.8 mph SE
Humidity77%
Visibility—
Dew point49°
Sat, 2450° / 43°0.01
50 °
Markham, Saturday, 24 October
Light rain. High 50°, low 43°.
Pressure29.77 inHg
Wind20.4 mph NW
Humidity68%
Visibility—
Dew point36°
Sun, 2553° / 40°0
53 °
Markham, Sunday, 25 October
Clear. High 53°, low 40°.
Pressure29.74 inHg
Wind18.4 mph NW
Humidity54%
Visibility—
Dew point31°
Mon, 2650° / 41°0.13
50 °
Markham, Monday, 26 October
Light rain. High 50°, low 41°.
Pressure29.85 inHg
Wind9.5 mph NW
Humidity95%
Visibility—
Dew point42°
Tue, 2755° / 44°0
55 °
Markham, Tuesday, 27 October
Partly cloudy. High 55°, low 44°.
Pressure29.91 inHg
Wind11.1 mph NW
Humidity58%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2862° / 46°0.08
62 °
Markham, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.08 in
Chance of precipitation23%
Record high81° (2023)
Record low29° (1976)
Thu, 2960° / 44°0.22
60 °
Markham, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.22 in
Chance of precipitation20%
Record high79° (2023)
Record low29° (1976)
Fri, 3060° / 43°0.11
60 °
Markham, Friday, 30 October
Climate normal for this date — 60-year average.
Average high60°
Average low43°
Average precipitation0.11 in
Chance of precipitation25%
Record high80° (2016)
Record low27° (2011)
Sat, 3161° / 44°0.05
61 °
Markham, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high61°
Average low44°
Average precipitation0.05 in
Chance of precipitation17%
Record high77° (2024)
Record low31° (1968)
Sun, 0162° / 46°0.09
62 °
Markham, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.09 in
Chance of precipitation28%
Record high80° (1974)
Record low31° (2011)
Mon, 0262° / 45°0.12
62 °
Markham, Monday, 2 November
Climate normal for this date — 60-year average.
Average high62°
Average low45°
Average precipitation0.12 in
Chance of precipitation30%
Record high80° (1971)
Record low29° (1976)
Tue, 0361° / 44°0.06
61 °
Markham, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high61°
Average low44°
Average precipitation0.06 in
Chance of precipitation22%
Record high78° (2003)
Record low31° (2002)
Wed, 0459° / 42°0.12
59 °
Markham, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high59°
Average low42°
Average precipitation0.12 in
Chance of precipitation20%
Record high79° (1974)
Record low27° (2006)
Thu, 0558° / 42°0.08
58 °
Markham, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.08 in
Chance of precipitation22%
Record high78° (1961)
Record low25° (1991)
Fri, 0658° / 42°0.06
58 °
Markham, Friday, 6 November
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.06 in
Chance of precipitation25%
Record high78° (2024)
Record low26° (1967)
Sat, 0757° / 42°0.11
57 °
Markham, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.11 in
Chance of precipitation23%
Record high76° (2024)
Record low27° (1962)
Sun, 0857° / 41°0.13
57 °
Markham, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.13 in
Chance of precipitation23%
Record high76° (1975)
Record low26° (1960)
Mon, 0958° / 41°0.05
58 °
Markham, Monday, 9 November
Climate normal for this date — 60-year average.
Average high58°
Average low41°
Average precipitation0.05 in
Chance of precipitation28%
Record high76° (2023)
Record low24° (2019)
Tue, 1057° / 41°0.13
57 °
Markham, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.13 in
Chance of precipitation32%
Record high73° (1975)
Record low28° (2003)
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 Markham, 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 Markham, 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.