Monthly outlook for Annex, VA: average high 84.7°, average low 63.3°. That is 1.6° above the climate normal for August. Precipitation is expected on 7 days (about 1.2 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 10 August (97.8°), the coolest 22 August (53.7°).
84.7°/63.3°
Average high / low
+1.6°
Above normal
7 / 6
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
84.9°
82.1°
+1.5°
18 August – 27 August
84.4°
81.2°
+1.7°
28 August – 6 September
at normal
80.2°
—
August records over 66 years
96.8°17 August 1988All-time high
46°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Staunton (4 mi).
Sun, 0985° / 69°0
85 °
Annex, Sunday, 9 August
Overcast. High 85°, low 69°.
Pressure30.06 inHg
Wind7.2 mph NW
Humidity42%
Visibility6.2 mi
Dew point63°
Mon, 1098° / 69°0.01
98 °
Annex, Monday, 10 August
Light rain. High 98°, low 69°.
Pressure30.03 inHg
Wind8.2 mph W
Humidity39%
Visibility6.2 mi
Dew point63°
Tue, 1190° / 69°0.04
90 °
Annex, Tuesday, 11 August
Light rain. High 90°, low 69°.
Pressure29.97 inHg
Wind6.1 mph W
Humidity44%
Visibility6.2 mi
Dew point62°
Wed, 1296° / 67°0.33
96 °
Annex, Wednesday, 12 August
Rain. High 96°, low 67°.
Pressure29.85 inHg
Wind16.7 mph W
Humidity88%
Visibility6.2 mi
Dew point67°
Thu, 1388° / 67°0.01
88 °
Annex, Thursday, 13 August
Light rain. High 88°, low 67°.
Pressure29.88 inHg
Wind13.8 mph NW
Humidity32%
Visibility—
Dew point52°
Fri, 1465° / 60°0.37
65 °
Annex, Friday, 14 August
Rain. High 65°, low 60°.
Pressure30.12 inHg
Wind4.7 mph SW
Humidity94%
Visibility—
Dew point60°
Sat, 1581° / 57°0
81 °
Annex, Saturday, 15 August
Overcast. High 81°, low 57°.
Pressure30.21 inHg
Wind7.8 mph N
Humidity31%
Visibility—
Dew point43°
Sun, 1684° / 57°0
84 °
Annex, Sunday, 16 August
Partly cloudy. High 84°, low 57°.
Pressure30.15 inHg
Wind11.7 mph S
Humidity35%
Visibility—
Dew point51°
Mon, 1776° / 66°0.06
76 °
Annex, Monday, 17 August
Light rain. High 76°, low 66°.
Pressure30.06 inHg
Wind7.3 mph S
Humidity67%
Visibility—
Dew point63°
Tue, 1878° / 65°0.06
78 °
Annex, Tuesday, 18 August
Light rain. High 78°, low 65°.
Pressure30.03 inHg
Wind8.3 mph SE
Humidity77%
Visibility—
Dew point66°
Wed, 1988° / 62°0
88 °
Annex, Wednesday, 19 August
Light rain. High 88°, low 62°.
Pressure29.88 inHg
Wind11.1 mph SW
Humidity41%
Visibility—
Dew point58°
Thu, 2082° / 59°0
82 °
Annex, Thursday, 20 August
Overcast. High 82°, low 59°.
Pressure29.77 inHg
Wind19.6 mph W
Humidity31%
Visibility—
Dew point47°
Fri, 2183° / 58°0
83 °
Annex, Friday, 21 August
Clear. High 83°, low 58°.
Pressure29.94 inHg
Wind13.5 mph N
Humidity27%
Visibility—
Dew point42°
Sat, 2286° / 54°0
86 °
Annex, Saturday, 22 August
Partly cloudy. High 86°, low 54°.
Pressure30.03 inHg
Wind10.4 mph S
Humidity28%
Visibility—
Dew point45°
Sun, 2389° / 65°0.19
89 °
Annex, Sunday, 23 August
Light rain. High 89°, low 65°.
Pressure30.00 inHg
Wind15.5 mph SW
Humidity60%
Visibility—
Dew point66°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2481° / 62°0.09
81 °
Annex, Monday, 24 August
Climate normal for this date — 60-year average.
Average high81°
Average low62°
Average precipitation0.09 in
Chance of precipitation23%
Record high92° (2023)
Record low51° (1997)
Tue, 2581° / 62°0.06
81 °
Annex, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high81°
Average low62°
Average precipitation0.06 in
Chance of precipitation27%
Record high96° (2023)
Record low53° (1986)
Wed, 2682° / 62°0.04
82 °
Annex, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low62°
Average precipitation0.04 in
Chance of precipitation27%
Record high92° (2024)
Record low53° (2025)
Thu, 2782° / 64°0.08
82 °
Annex, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.08 in
Chance of precipitation38%
Record high91° (2016)
Record low49° (2025)
Fri, 2882° / 64°0.1
82 °
Annex, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.1 in
Chance of precipitation35%
Record high94° (2024)
Record low50° (2025)
Sat, 2982° / 63°0.08
82 °
Annex, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low63°
Average precipitation0.08 in
Chance of precipitation37%
Record high91° (1973)
Record low46° (1986)
Sun, 3082° / 62°0.07
82 °
Annex, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low62°
Average precipitation0.07 in
Chance of precipitation27%
Record high91° (2010)
Record low49° (1965)
Mon, 3180° / 63°0.1
80 °
Annex, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.1 in
Chance of precipitation30%
Record high92° (2012)
Record low50° (1986)
Tue, 0179° / 62°0.13
79 °
Annex, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.13 in
Chance of precipitation42%
Record high91° (1973)
Record low51° (1967)
Wed, 0280° / 61°0.07
80 °
Annex, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low61°
Average precipitation0.07 in
Chance of precipitation25%
Record high90° (1993)
Record low48° (1967)
Thu, 0380° / 61°0.1
80 °
Annex, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low61°
Average precipitation0.1 in
Chance of precipitation27%
Record high93° (2023)
Record low48° (1967)
Fri, 0479° / 62°0.13
79 °
Annex, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.13 in
Chance of precipitation37%
Record high96° (2023)
Record low49° (1967)
Sat, 0578° / 61°0.2
78 °
Annex, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.2 in
Chance of precipitation32%
Record high95° (2023)
Record low46° (1997)
Sun, 0679° / 61°0.23
79 °
Annex, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.23 in
Chance of precipitation35%
Record high95° (2023)
Record low48° (2024)
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 Annex, 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 Annex, 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.