Monthly outlook for Charleston, WV: average high 85.2°, average low 63.7°. That is 1.2° above the climate normal for August. Precipitation is expected on 9 days (about 7.3 inches), against a normal of 7 days and 2.3 inches. The warmest day looks like 10 August (96.5°), the coolest 16 August (52.8°).
85.2°/63.7°
Average high / low
+1.2°
Above normal
9 / 7
Wet days / normal
7.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
87.1°
83.2°
+2.2°
18 August – 27 August
82°
82.8°
-0.5°
28 August – 6 September
at normal
81.9°
—
August records over 66 years
102.9°16 August 2007All-time high
48.6°29 August 1986All-time low
Sun, 0991° / 69°0.2
91 °
Charleston, Sunday, 9 August
Rain. High 91°, low 69°.
Pressure30.09 inHg
Wind4.4 mph W
Humidity64%
Visibility6.2 mi
Dew point71°
Mon, 1096° / 67°0.81
96 °
Charleston, Monday, 10 August
Heavy rain. High 96°, low 67°.
Pressure30.06 inHg
Wind7.9 mph W
Humidity51%
Visibility6.2 mi
Dew point68°
Tue, 1193° / 67°0.64
93 °
Charleston, Tuesday, 11 August
Rain. High 93°, low 67°.
Pressure30.03 inHg
Wind8.5 mph SW
Humidity73%
Visibility6.2 mi
Dew point68°
Wed, 1295° / 68°4.13
95 °
Charleston, Wednesday, 12 August
Heavy rain. High 95°, low 68°.
Pressure29.85 inHg
Wind11.6 mph SW
Humidity71%
Visibility6.2 mi
Dew point70°
Thu, 1386° / 65°0.82
86 °
Charleston, Thursday, 13 August
Heavy rain. High 86°, low 65°.
Pressure29.88 inHg
Wind6.6 mph W
Humidity47%
Visibility—
Dew point61°
Fri, 1478° / 59°0.04
78 °
Charleston, Friday, 14 August
Light rain. High 78°, low 59°.
Pressure30.03 inHg
Wind7.5 mph SW
Humidity70%
Visibility—
Dew point58°
Sat, 1576° / 55°0
76 °
Charleston, Saturday, 15 August
Overcast. High 76°, low 55°.
Pressure30.27 inHg
Wind7.2 mph N
Humidity39%
Visibility—
Dew point46°
Sun, 1682° / 53°0
82 °
Charleston, Sunday, 16 August
Overcast. High 82°, low 53°.
Pressure30.24 inHg
Wind2.7 mph SE
Humidity37%
Visibility—
Dew point50°
Mon, 1788° / 59°0
88 °
Charleston, Monday, 17 August
Partly cloudy. High 88°, low 59°.
Pressure30.09 inHg
Wind7.4 mph SW
Humidity46%
Visibility—
Dew point60°
Tue, 1875° / 70°0.26
75 °
Charleston, Tuesday, 18 August
Light rain. High 75°, low 70°.
Pressure29.97 inHg
Wind7.4 mph SW
Humidity99%
Visibility—
Dew point71°
Wed, 1984° / 67°0.02
84 °
Charleston, Wednesday, 19 August
Light rain. High 84°, low 67°.
Pressure29.94 inHg
Wind6.5 mph N
Humidity38%
Visibility—
Dew point54°
Thu, 2089° / 63°0.03
89 °
Charleston, Thursday, 20 August
Light rain. High 89°, low 63°.
Pressure29.88 inHg
Wind4.8 mph W
Humidity46%
Visibility—
Dew point62°
Fri, 2184° / 69°0.17
84 °
Charleston, Friday, 21 August
Light rain. High 84°, low 69°.
Pressure29.83 inHg
Wind9.5 mph NW
Humidity62%
Visibility—
Dew point68°
Sat, 2284° / 65°0
84 °
Charleston, Saturday, 22 August
Mostly clear. High 84°, low 65°.
Pressure29.85 inHg
Wind7.1 mph NW
Humidity44%
Visibility—
Dew point57°
Sun, 2375° / 56°0
75 °
Charleston, Sunday, 23 August
Partly cloudy. High 75°, low 56°.
Pressure30.09 inHg
Wind8.2 mph NE
Humidity32%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 66°0.14
82 °
Charleston, Monday, 24 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.14 in
Chance of precipitation33%
Record high99° (2007)
Record low55° (1971)
Tue, 2583° / 66°0.09
83 °
Charleston, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.09 in
Chance of precipitation32%
Record high96° (2007)
Record low55° (1971)
Wed, 2683° / 66°0.06
83 °
Charleston, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.06 in
Chance of precipitation28%
Record high93° (2024)
Record low55° (2017)
Thu, 2783° / 67°0.15
83 °
Charleston, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.15 in
Chance of precipitation38%
Record high94° (2024)
Record low54° (2025)
Fri, 2883° / 67°0.15
83 °
Charleston, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.15 in
Chance of precipitation38%
Record high97° (2024)
Record low53° (1968)
Sat, 2983° / 67°0.08
83 °
Charleston, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.08 in
Chance of precipitation30%
Record high96° (2007)
Record low49° (1986)
Sun, 3083° / 66°0.12
83 °
Charleston, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.12 in
Chance of precipitation38%
Record high97° (2024)
Record low51° (1965)
Mon, 3182° / 66°0.12
82 °
Charleston, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.12 in
Chance of precipitation35%
Record high94° (2024)
Record low53° (1976)
Tue, 0182° / 65°0.14
82 °
Charleston, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.14 in
Chance of precipitation40%
Record high94° (2010)
Record low52° (1967)
Wed, 0282° / 65°0.09
82 °
Charleston, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation32%
Record high95° (2010)
Record low50° (1967)
Thu, 0382° / 65°0.15
82 °
Charleston, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.15 in
Chance of precipitation42%
Record high93° (2011)
Record low50° (1967)
Fri, 0481° / 65°0.11
81 °
Charleston, Friday, 4 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.11 in
Chance of precipitation40%
Record high92° (2007)
Record low51° (1997)
Sat, 0580° / 64°0.15
80 °
Charleston, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.15 in
Chance of precipitation35%
Record high96° (2007)
Record low49° (1997)
Sun, 0680° / 64°0.11
80 °
Charleston, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.11 in
Chance of precipitation37%
Record high96° (2007)
Record low52° (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 Charleston, WV 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 Charleston, WV 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.