Monthly outlook for West Charleston, OH: average high 83.5°, average low 66°. That is 1.6° above the climate normal for August. Precipitation is expected on 7 days (about 4.2 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 23 August (93.5°), the coolest 15 August (56.9°).
83.5°/66°
Average high / low
+1.6°
Above normal
7 / 6
Wet days / normal
4.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.8°
80.7°
+0°
19 August – 28 August
87.9°
80.7°
+4°
29 August – 7 September
at normal
79.2°
—
August records over 66 years
96.8°20 August 1983All-time high
44.2°29 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Casstown (9 mi).
Mon, 1093° / 71°0.69
93 °
West Charleston, Monday, 10 August
Heavy rain. High 93°, low 71°.
Pressure30.00 inHg
Wind16.2 mph S
Humidity88%
Visibility6.2 mi
Dew point72°
Tue, 1188° / 68°1.39
88 °
West Charleston, Tuesday, 11 August
Heavy rain. High 88°, low 68°.
Pressure29.91 inHg
Wind10.1 mph SW
Humidity81%
Visibility6.2 mi
Dew point75°
Wed, 1284° / 64°1.8
84 °
West Charleston, Wednesday, 12 August
Heavy rain. High 84°, low 64°.
Pressure29.80 inHg
Wind4.9 mph NW
Humidity79%
Visibility6.2 mi
Dew point74°
Thu, 1376° / 63°0
76 °
West Charleston, Thursday, 13 August
Mostly clear. High 76°, low 63°.
Pressure29.97 inHg
Wind8.5 mph N
Humidity66%
Visibility—
Dew point62°
Fri, 1473° / 60°0.11
73 °
West Charleston, Friday, 14 August
Light rain. High 73°, low 60°.
Pressure30.15 inHg
Wind7.1 mph NE
Humidity68%
Visibility—
Dew point58°
Sat, 1573° / 57°0
73 °
West Charleston, Saturday, 15 August
Overcast. High 73°, low 57°.
Pressure30.27 inHg
Wind8.1 mph E
Humidity75%
Visibility—
Dew point58°
Sun, 1673° / 58°0.02
73 °
West Charleston, Sunday, 16 August
Light rain. High 73°, low 58°.
Pressure30.12 inHg
Wind9.1 mph SE
Humidity69%
Visibility—
Dew point57°
Mon, 1777° / 60°0
77 °
West Charleston, Monday, 17 August
Overcast. High 77°, low 60°.
Pressure30.06 inHg
Wind6.6 mph N
Humidity76%
Visibility—
Dew point66°
Tue, 1880° / 62°0
80 °
West Charleston, Tuesday, 18 August
Clear. High 80°, low 62°.
Pressure30.06 inHg
Wind4.2 mph E
Humidity59%
Visibility—
Dew point62°
Wed, 1981° / 63°0
81 °
West Charleston, Wednesday, 19 August
Partly cloudy. High 81°, low 63°.
Pressure30.03 inHg
Wind11.3 mph SE
Humidity63%
Visibility—
Dew point64°
Thu, 2090° / 67°0.05
90 °
West Charleston, Thursday, 20 August
Light rain. High 90°, low 67°.
Pressure29.88 inHg
Wind14.3 mph SW
Humidity67%
Visibility—
Dew point70°
Fri, 2190° / 75°0
90 °
West Charleston, Friday, 21 August
Mostly clear. High 90°, low 75°.
Pressure29.85 inHg
Wind7.3 mph N
Humidity68%
Visibility—
Dew point75°
Sat, 2288° / 70°0
88 °
West Charleston, Saturday, 22 August
Partly cloudy. High 88°, low 70°.
Pressure29.94 inHg
Wind7.9 mph SE
Humidity58%
Visibility—
Dew point67°
Sun, 2394° / 75°0
94 °
West Charleston, Sunday, 23 August
Partly cloudy. High 94°, low 75°.
Pressure29.88 inHg
Wind6.9 mph SW
Humidity57%
Visibility—
Dew point73°
Mon, 2485° / 74°0.04
85 °
West Charleston, Monday, 24 August
Light rain. High 85°, low 74°.
Pressure30.03 inHg
Wind10.3 mph N
Humidity74%
Visibility—
Dew point73°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2581° / 63°0.07
81 °
West Charleston, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high81°
Average low63°
Average precipitation0.07 in
Chance of precipitation25%
Record high92° (1983)
Record low51° (1984)
Wed, 2681° / 64°0.08
81 °
West Charleston, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation27%
Record high90° (1983)
Record low49° (2025)
Thu, 2781° / 65°0.07
81 °
West Charleston, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.07 in
Chance of precipitation30%
Record high91° (2024)
Record low49° (2025)
Fri, 2881° / 65°0.17
81 °
West Charleston, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.17 in
Chance of precipitation38%
Record high89° (1990)
Record low51° (1968)
Sat, 2980° / 64°0.12
80 °
West Charleston, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.12 in
Chance of precipitation37%
Record high92° (2010)
Record low44° (1965)
Sun, 3080° / 63°0.11
80 °
West Charleston, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.11 in
Chance of precipitation32%
Record high93° (2024)
Record low49° (1986)
Mon, 3180° / 62°0.1
80 °
West Charleston, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.1 in
Chance of precipitation32%
Record high91° (2012)
Record low49° (2009)
Tue, 0179° / 62°0.09
79 °
West Charleston, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.09 in
Chance of precipitation25%
Record high93° (2011)
Record low49° (1987)
Wed, 0280° / 63°0.08
80 °
West Charleston, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.08 in
Chance of precipitation27%
Record high95° (2011)
Record low47° (1967)
Thu, 0379° / 62°0.11
79 °
West Charleston, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.11 in
Chance of precipitation30%
Record high93° (2011)
Record low50° (1967)
Fri, 0479° / 62°0.07
79 °
West Charleston, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.07 in
Chance of precipitation22%
Record high90° (1999)
Record low47° (1997)
Sat, 0579° / 61°0.08
79 °
West Charleston, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.08 in
Chance of precipitation23%
Record high91° (2007)
Record low47° (1997)
Sun, 0679° / 61°0.03
79 °
West Charleston, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.03 in
Chance of precipitation18%
Record high92° (1998)
Record low45° (1984)
Mon, 0778° / 61°0.07
78 °
West Charleston, Monday, 7 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.07 in
Chance of precipitation28%
Record high92° (2002)
Record low45° (1962)
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 West Charleston, OH 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 West Charleston, OH 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.