Monthly outlook for Mill Creek Park, VA: average high 90.8°, average low 71°. That is 3.9° above the climate normal for August. Precipitation is expected on 7 days (about 1.2 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 16 August (104.7°), the coolest 15 August (65.4°).
90.8°/71°
Average high / low
+3.9°
Above normal
7 / 6
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
90.5°
84.6°
+3.3°
19 August – 28 August
91.4°
83.2°
+4.5°
29 August – 7 September
at normal
82°
—
August records over 66 years
100°17 August 1988All-time high
51.3°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Annandale (2 mi).
Mon, 1095° / 73°0.02
95 °
Mill Creek Park, Monday, 10 August
Light rain. High 95°, low 73°.
Pressure29.97 inHg
Wind3.8 mph W
Humidity33%
Visibility6.2 mi
Dew point61°
Tue, 1193° / 70°0.12
93 °
Mill Creek Park, Tuesday, 11 August
Rain. High 93°, low 70°.
Pressure29.94 inHg
Wind9 mph NW
Humidity48%
Visibility6.2 mi
Dew point64°
Wed, 1291° / 73°0.02
91 °
Mill Creek Park, Wednesday, 12 August
Light rain. High 91°, low 73°.
Pressure29.80 inHg
Wind5 mph W
Humidity50%
Visibility6.2 mi
Dew point64°
Thu, 1392° / 72°0
92 °
Mill Creek Park, Thursday, 13 August
Mostly clear. High 92°, low 72°.
Pressure29.91 inHg
Wind8 mph NW
Humidity38%
Visibility6.2 mi
Dew point58°
Fri, 1474° / 68°0.06
74 °
Mill Creek Park, Friday, 14 August
Light rain. High 74°, low 68°.
Pressure30.09 inHg
Wind5 mph N
Humidity77%
Visibility—
Dew point64°
Sat, 1584° / 65°0
84 °
Mill Creek Park, Saturday, 15 August
Overcast. High 84°, low 65°.
Pressure30.15 inHg
Wind6.2 mph SW
Humidity52%
Visibility—
Dew point63°
Sun, 16105° / 70°0.17
105 °
Mill Creek Park, Sunday, 16 August
Light rain. High 105°, low 70°.
Pressure29.85 inHg
Wind9.7 mph W
Humidity41%
Visibility—
Dew point66°
Mon, 1787° / 72°0
87 °
Mill Creek Park, Monday, 17 August
Partly cloudy. High 87°, low 72°.
Pressure29.97 inHg
Wind11.2 mph NW
Humidity35%
Visibility—
Dew point53°
Tue, 1892° / 69°0.02
92 °
Mill Creek Park, Tuesday, 18 August
Light rain. High 92°, low 69°.
Pressure30.03 inHg
Wind10 mph S
Humidity36%
Visibility—
Dew point57°
Wed, 1998° / 70°0.09
98 °
Mill Creek Park, Wednesday, 19 August
Light rain. High 98°, low 70°.
Pressure29.91 inHg
Wind10.2 mph NW
Humidity33%
Visibility—
Dew point60°
Thu, 2093° / 72°0
93 °
Mill Creek Park, Thursday, 20 August
Clear. High 93°, low 72°.
Pressure29.94 inHg
Wind6.5 mph SE
Humidity31%
Visibility—
Dew point55°
Fri, 2190° / 71°0.21
90 °
Mill Creek Park, Friday, 21 August
Light rain. High 90°, low 71°.
Pressure29.80 inHg
Wind8.5 mph SW
Humidity47%
Visibility—
Dew point65°
Sat, 2288° / 73°0.17
88 °
Mill Creek Park, Saturday, 22 August
Light rain. High 88°, low 73°.
Pressure29.85 inHg
Wind7.9 mph NE
Humidity51%
Visibility—
Dew point66°
Sun, 2385° / 72°0.31
85 °
Mill Creek Park, Sunday, 23 August
Light rain. High 85°, low 72°.
Pressure30.00 inHg
Wind5.3 mph E
Humidity72%
Visibility—
Dew point71°
Mon, 2494° / 72°0.04
94 °
Mill Creek Park, Monday, 24 August
Light rain. High 94°, low 72°.
Pressure29.97 inHg
Wind6.1 mph NW
Humidity38%
Visibility—
Dew point61°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2584° / 67°0.09
84 °
Mill Creek Park, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.09 in
Chance of precipitation25%
Record high96° (1968)
Record low59° (1971)
Wed, 2684° / 67°0.05
84 °
Mill Creek Park, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.05 in
Chance of precipitation20%
Record high94° (1975)
Record low58° (1963)
Thu, 2784° / 68°0.15
84 °
Mill Creek Park, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.15 in
Chance of precipitation35%
Record high96° (1987)
Record low59° (1969)
Fri, 2884° / 68°0.17
84 °
Mill Creek Park, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.17 in
Chance of precipitation42%
Record high96° (2024)
Record low58° (1986)
Sat, 2983° / 68°0.12
83 °
Mill Creek Park, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.12 in
Chance of precipitation33%
Record high95° (1973)
Record low52° (1986)
Sun, 3083° / 67°0.06
83 °
Mill Creek Park, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.06 in
Chance of precipitation25%
Record high94° (2010)
Record low51° (1986)
Mon, 3183° / 67°0.08
83 °
Mill Creek Park, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.08 in
Chance of precipitation28%
Record high95° (1973)
Record low54° (1986)
Tue, 0182° / 66°0.14
82 °
Mill Creek Park, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.14 in
Chance of precipitation33%
Record high95° (1980)
Record low56° (1967)
Wed, 0282° / 66°0.1
82 °
Mill Creek Park, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.1 in
Chance of precipitation37%
Record high95° (1980)
Record low54° (2017)
Thu, 0382° / 66°0.11
82 °
Mill Creek Park, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.11 in
Chance of precipitation33%
Record high97° (2023)
Record low52° (1967)
Fri, 0482° / 66°0.11
82 °
Mill Creek Park, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.11 in
Chance of precipitation37%
Record high97° (2023)
Record low54° (1997)
Sat, 0581° / 66°0.15
81 °
Mill Creek Park, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.15 in
Chance of precipitation32%
Record high98° (2023)
Record low54° (1997)
Sun, 0681° / 65°0.23
81 °
Mill Creek Park, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.23 in
Chance of precipitation32%
Record high98° (2023)
Record low55° (2000)
Mon, 0781° / 65°0.11
81 °
Mill Creek Park, Monday, 7 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.11 in
Chance of precipitation32%
Record high93° (1998)
Record low53° (1988)
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 Mill Creek Park, 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 Mill Creek Park, 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.