Monthly outlook for Guinea Mills, VA: average high 86.7°, average low 66.1°. That is 0.7° above the climate normal for August. Precipitation is expected on 6 days (about 1.4 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 24 August (99.5°), the coolest 15 August (57.7°).
86.7°/66.1°
Average high / low
+0.7°
Above normal
6 / 5
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
85.2°
85.9°
-0.4°
19 August – 28 August
89.2°
84.8°
+2.4°
29 August – 7 September
at normal
83.4°
—
August records over 66 years
101.8°20 August 1983All-time high
49.5°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Dillwyn (10 mi).
Mon, 1099° / 73°0.03
99 °
Guinea Mills, Monday, 10 August
Light rain. High 99°, low 73°.
Pressure30.03 inHg
Wind4.3 mph W
Humidity36%
Visibility6.2 mi
Dew point64°
Tue, 1197° / 70°0.04
97 °
Guinea Mills, Tuesday, 11 August
Light rain. High 97°, low 70°.
Pressure29.97 inHg
Wind2.5 mph W
Humidity38%
Visibility6.2 mi
Dew point64°
Wed, 1293° / 70°0.3
93 °
Guinea Mills, Wednesday, 12 August
Rain. High 93°, low 70°.
Pressure29.83 inHg
Wind9.8 mph SW
Humidity61%
Visibility6.2 mi
Dew point65°
Thu, 1392° / 69°0.02
92 °
Guinea Mills, Thursday, 13 August
Light rain. High 92°, low 69°.
Pressure29.85 inHg
Wind7.5 mph N
Humidity33%
Visibility—
Dew point56°
Fri, 1469° / 58°0.1
69 °
Guinea Mills, Friday, 14 August
Light rain. High 69°, low 58°.
Pressure30.12 inHg
Wind5.2 mph NE
Humidity97%
Visibility—
Dew point59°
Sat, 1583° / 58°0
83 °
Guinea Mills, Saturday, 15 August
Overcast. High 83°, low 58°.
Pressure30.18 inHg
Wind8.1 mph N
Humidity29%
Visibility—
Dew point44°
Sun, 1688° / 59°0
88 °
Guinea Mills, Sunday, 16 August
Partly cloudy. High 88°, low 59°.
Pressure30.15 inHg
Wind6.3 mph SW
Humidity30%
Visibility—
Dew point50°
Mon, 1772° / 67°0.04
72 °
Guinea Mills, Monday, 17 August
Light rain. High 72°, low 67°.
Pressure30.12 inHg
Wind7.7 mph S
Humidity84%
Visibility—
Dew point65°
Tue, 1868° / 65°0.66
68 °
Guinea Mills, Tuesday, 18 August
Rain. High 68°, low 65°.
Pressure30.03 inHg
Wind3.3 mph NE
Humidity99%
Visibility—
Dew point67°
Wed, 1984° / 67°0
84 °
Guinea Mills, Wednesday, 19 August
Overcast. High 84°, low 67°.
Pressure29.91 inHg
Wind7.7 mph S
Humidity60%
Visibility—
Dew point66°
Thu, 2090° / 65°0
90 °
Guinea Mills, Thursday, 20 August
Partly cloudy. High 90°, low 65°.
Pressure29.74 inHg
Wind12.1 mph W
Humidity31%
Visibility—
Dew point53°
Fri, 2186° / 64°0
86 °
Guinea Mills, Friday, 21 August
Clear. High 86°, low 64°.
Pressure29.91 inHg
Wind9.3 mph N
Humidity28%
Visibility—
Dew point45°
Sat, 2287° / 60°0
87 °
Guinea Mills, Saturday, 22 August
Mostly clear. High 87°, low 60°.
Pressure30.03 inHg
Wind5.4 mph SW
Humidity31%
Visibility—
Dew point49°
Sun, 2390° / 70°0.17
90 °
Guinea Mills, Sunday, 23 August
Light rain. High 90°, low 70°.
Pressure30.03 inHg
Wind10.2 mph S
Humidity68%
Visibility—
Dew point70°
Mon, 2499° / 70°0
99 °
Guinea Mills, Monday, 24 August
Partly cloudy. High 99°, low 70°.
Pressure29.91 inHg
Wind7.6 mph SW
Humidity27%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2585° / 67°0.08
85 °
Guinea Mills, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.08 in
Chance of precipitation22%
Record high98° (2007)
Record low58° (1971)
Wed, 2685° / 67°0.05
85 °
Guinea Mills, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.05 in
Chance of precipitation22%
Record high97° (2016)
Record low58° (1984)
Thu, 2785° / 68°0.12
85 °
Guinea Mills, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.12 in
Chance of precipitation30%
Record high96° (1987)
Record low58° (2025)
Fri, 2886° / 68°0.1
86 °
Guinea Mills, Friday, 28 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.1 in
Chance of precipitation33%
Record high98° (2021)
Record low55° (2025)
Sat, 2985° / 67°0.1
85 °
Guinea Mills, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.1 in
Chance of precipitation30%
Record high96° (2006)
Record low51° (1986)
Sun, 3085° / 67°0.07
85 °
Guinea Mills, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.07 in
Chance of precipitation22%
Record high95° (2018)
Record low49° (1986)
Mon, 3184° / 67°0.09
84 °
Guinea Mills, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.09 in
Chance of precipitation27%
Record high96° (1991)
Record low53° (1986)
Tue, 0183° / 66°0.14
83 °
Guinea Mills, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.14 in
Chance of precipitation37%
Record high96° (1993)
Record low52° (1967)
Wed, 0283° / 65°0.05
83 °
Guinea Mills, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.05 in
Chance of precipitation22%
Record high94° (1973)
Record low53° (1967)
Thu, 0384° / 66°0.09
84 °
Guinea Mills, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.09 in
Chance of precipitation30%
Record high93° (2010)
Record low51° (1967)
Fri, 0483° / 66°0.13
83 °
Guinea Mills, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.13 in
Chance of precipitation28%
Record high96° (2023)
Record low53° (2024)
Sat, 0582° / 65°0.19
82 °
Guinea Mills, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.19 in
Chance of precipitation30%
Record high97° (2023)
Record low53° (1997)
Sun, 0682° / 65°0.31
82 °
Guinea Mills, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.31 in
Chance of precipitation27%
Record high97° (2023)
Record low55° (1972)
Mon, 0782° / 64°0.09
82 °
Guinea Mills, Monday, 7 September
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.09 in
Chance of precipitation18%
Record high95° (2023)
Record low51° (1984)
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 Guinea Mills, 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 Guinea Mills, 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.