Monthly outlook for Arna Valley, VA: average high 63.3°, average low 49.9°. That is 2.3° above the climate normal for October. Precipitation is expected on 4 days (about 2.4 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 30 October (75.1°), the coolest 11 November (43°).
63.3°/49.9°
Average high / low
+2.3°
Above normal
4 / 4
Wet days / normal
2.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
68.3°
60.7°
+4.2°
8 November – 17 November
55.1°
56°
-0.5°
18 November – 27 November
at normal
53°
—
October records over 66 years
94.5°2 October 2019All-time high
29.3°28 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Alexandria (2 mi).
Fri, 3075° / 55°0
75 °
Arna Valley, Friday, 30 October
Clear. High 75°, low 55°.
Pressure30.18 inHg
Wind10.4 mph NW
Humidity56%
Visibility6.2 mi
Dew point53°
Sat, 3162° / 46°0
62 °
Arna Valley, Saturday, 31 October
Overcast. High 62°, low 46°.
Pressure30.47 inHg
Wind4.1 mph N
Humidity54%
Visibility6.2 mi
Dew point41°
Sun, 0164° / 49°0
64 °
Arna Valley, Sunday, 1 November
Mostly clear. High 64°, low 49°.
Pressure30.47 inHg
Wind3.6 mph SE
Humidity56%
Visibility6.2 mi
Dew point45°
Mon, 0269° / 48°0
69 °
Arna Valley, Monday, 2 November
Clear. High 69°, low 48°.
Pressure30.39 inHg
Wind6.9 mph S
Humidity53%
Visibility—
Dew point42°
Tue, 0370° / 51°0
70 °
Arna Valley, Tuesday, 3 November
Partly cloudy. High 70°, low 51°.
Pressure30.18 inHg
Wind8.5 mph S
Humidity66%
Visibility—
Dew point49°
Wed, 0469° / 56°0.01
69 °
Arna Valley, Wednesday, 4 November
Light rain. High 69°, low 56°.
Pressure30.24 inHg
Wind8.7 mph SE
Humidity87%
Visibility—
Dew point58°
Thu, 0571° / 62°0.7
71 °
Arna Valley, Thursday, 5 November
Heavy rain. High 71°, low 62°.
Pressure30.06 inHg
Wind15.1 mph SE
Humidity76%
Visibility—
Dew point58°
Fri, 0669° / 63°1.52
69 °
Arna Valley, Friday, 6 November
Heavy rain. High 69°, low 63°.
Pressure29.68 inHg
Wind16.4 mph SE
Humidity87%
Visibility—
Dew point63°
Sat, 0761° / 50°0
61 °
Arna Valley, Saturday, 7 November
Overcast. High 61°, low 50°.
Pressure29.80 inHg
Wind13.5 mph NW
Humidity69%
Visibility—
Dew point50°
Sun, 0849° / 46°0
49 °
Arna Valley, Sunday, 8 November
Overcast. High 49°, low 46°.
Pressure29.94 inHg
Wind14.4 mph NW
Humidity68%
Visibility—
Dew point38°
Mon, 0954° / 46°0
54 °
Arna Valley, Monday, 9 November
Overcast. High 54°, low 46°.
Pressure29.80 inHg
Wind15.7 mph NW
Humidity62%
Visibility—
Dew point38°
Tue, 1059° / 44°0.01
59 °
Arna Valley, Tuesday, 10 November
Light rain. High 59°, low 44°.
Pressure29.74 inHg
Wind9.5 mph SW
Humidity40%
Visibility—
Dew point28°
Wed, 1157° / 43°0
57 °
Arna Valley, Wednesday, 11 November
Mostly clear. High 57°, low 43°.
Pressure29.83 inHg
Wind9.8 mph SW
Humidity48%
Visibility—
Dew point32°
Thu, 1257° / 46°0.1
57 °
Arna Valley, Thursday, 12 November
Light rain. High 57°, low 46°.
Pressure29.94 inHg
Wind9 mph S
Humidity76%
Visibility—
Dew point42°
Fri, 1355° / 44°0.08
55 °
Arna Valley, Friday, 13 November
Light rain. High 55°, low 44°.
Pressure29.97 inHg
Wind11.3 mph NW
Humidity57%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 1455° / 39°0.06
55 °
Arna Valley, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.06 in
Chance of precipitation12%
Record high75° (1985)
Record low25° (1986)
Sun, 1556° / 40°0.1
56 °
Arna Valley, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.1 in
Chance of precipitation27%
Record high77° (1993)
Record low28° (1996)
Mon, 1655° / 40°0.12
55 °
Arna Valley, Monday, 16 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.12 in
Chance of precipitation30%
Record high73° (2005)
Record low25° (1967)
Tue, 1754° / 39°0.08
54 °
Arna Valley, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.08 in
Chance of precipitation28%
Record high70° (1987)
Record low28° (1995)
Wed, 1854° / 39°0.06
54 °
Arna Valley, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.06 in
Chance of precipitation27%
Record high71° (2021)
Record low27° (2014)
Thu, 1954° / 39°0.1
54 °
Arna Valley, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.1 in
Chance of precipitation25%
Record high70° (1985)
Record low23° (2014)
Fri, 2054° / 39°0.06
54 °
Arna Valley, Friday, 20 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.06 in
Chance of precipitation22%
Record high75° (1985)
Record low26° (2022)
Sat, 2153° / 38°0.09
53 °
Arna Valley, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.09 in
Chance of precipitation27%
Record high75° (1991)
Record low24° (2022)
Sun, 2252° / 38°0.1
52 °
Arna Valley, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.1 in
Chance of precipitation28%
Record high72° (2007)
Record low24° (1964)
Mon, 2351° / 37°0.06
51 °
Arna Valley, Monday, 23 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.06 in
Chance of precipitation23%
Record high70° (1979)
Record low19° (1989)
Tue, 2453° / 37°0.13
53 °
Arna Valley, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.13 in
Chance of precipitation28%
Record high71° (1979)
Record low13° (1989)
Wed, 2552° / 37°0.1
52 °
Arna Valley, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.1 in
Chance of precipitation28%
Record high72° (1973)
Record low19° (1989)
Thu, 2654° / 38°0.13
54 °
Arna Valley, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.13 in
Chance of precipitation33%
Record high69° (2025)
Record low27° (2005)
Fri, 2753° / 38°0.09
53 °
Arna Valley, Friday, 27 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.09 in
Chance of precipitation38%
Record high67° (1988)
Record low25° (1974)
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 Arna Valley, 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 Arna Valley, 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.