Monthly outlook for Cornwell, SC: average high 97.5°, average low 72.4°. That is 5.8° above the climate normal for August. Precipitation is expected on 14 days (about 2.9 inches), against a normal of 7 days and 2.0 inches. The warmest day looks like 17 August (103.5°), the coolest 22 August (69.9°).
97.5°/72.4°
Average high / low
+5.8°
Above normal
14 / 7
Wet days / normal
2.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
97.9°
87°
+6.1°
19 August – 28 August
96.8°
86.8°
+5.6°
29 August – 7 September
at normal
84.9°
—
August records over 66 years
104.4°9 August 2007All-time high
58.3°24 August 2024All-time low
Climate normals and records are computed from the nearest reference point — Richburg (12 mi).
Mon, 1092° / 71°0.2
92 °
Cornwell, Monday, 10 August
Rain. High 92°, low 71°.
Pressure30.09 inHg
Wind7.3 mph W
Humidity53%
Visibility6.2 mi
Dew point70°
Tue, 1199° / 74°0
99 °
Cornwell, Tuesday, 11 August
Partly cloudy. High 99°, low 74°.
Pressure30.03 inHg
Wind2.9 mph W
Humidity44%
Visibility6.2 mi
Dew point69°
Wed, 12100° / 73°0.7
100 °
Cornwell, Wednesday, 12 August
Heavy rain. High 100°, low 73°.
Pressure29.91 inHg
Wind4.4 mph W
Humidity40%
Visibility6.2 mi
Dew point67°
Thu, 1399° / 73°0.18
99 °
Cornwell, Thursday, 13 August
Rain. High 99°, low 73°.
Pressure29.94 inHg
Wind4 mph W
Humidity40%
Visibility6.2 mi
Dew point68°
Fri, 1498° / 71°0.09
98 °
Cornwell, Friday, 14 August
Light rain. High 98°, low 71°.
Pressure30.03 inHg
Wind6.8 mph W
Humidity43%
Visibility—
Dew point66°
Sat, 1598° / 74°0.23
98 °
Cornwell, Saturday, 15 August
Rain. High 98°, low 74°.
Pressure30.12 inHg
Wind10.7 mph N
Humidity44%
Visibility—
Dew point69°
Sun, 1699° / 73°0.04
99 °
Cornwell, Sunday, 16 August
Light rain. High 99°, low 73°.
Pressure30.03 inHg
Wind6.2 mph W
Humidity44%
Visibility—
Dew point68°
Mon, 17104° / 77°0.05
104 °
Cornwell, Monday, 17 August
Light rain. High 104°, low 77°.
Pressure29.94 inHg
Wind7.6 mph NW
Humidity28%
Visibility—
Dew point60°
Tue, 1899° / 74°0.03
99 °
Cornwell, Tuesday, 18 August
Light rain. High 99°, low 74°.
Pressure30.03 inHg
Wind6.8 mph S
Humidity40%
Visibility—
Dew point67°
Wed, 19102° / 73°0.33
102 °
Cornwell, Wednesday, 19 August
Rain. High 102°, low 73°.
Pressure30.00 inHg
Wind9.8 mph NW
Humidity39%
Visibility—
Dew point67°
Thu, 2098° / 72°0.05
98 °
Cornwell, Thursday, 20 August
Light rain. High 98°, low 72°.
Pressure29.97 inHg
Wind8.7 mph N
Humidity41%
Visibility—
Dew point66°
Fri, 2199° / 70°0.49
99 °
Cornwell, Friday, 21 August
Rain. High 99°, low 70°.
Pressure29.88 inHg
Wind19.5 mph NW
Humidity38%
Visibility—
Dew point65°
Sat, 2292° / 70°0.16
92 °
Cornwell, Saturday, 22 August
Light rain. High 92°, low 70°.
Pressure29.88 inHg
Wind15.4 mph W
Humidity49%
Visibility—
Dew point68°
Sun, 2395° / 72°0.31
95 °
Cornwell, Sunday, 23 August
Rain. High 95°, low 72°.
Pressure29.97 inHg
Wind8 mph W
Humidity47%
Visibility—
Dew point67°
Mon, 2495° / 71°0.04
95 °
Cornwell, Monday, 24 August
Light rain. High 95°, low 71°.
Pressure30.03 inHg
Wind8.8 mph W
Humidity45%
Visibility—
Dew point66°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2586° / 69°0.12
86 °
Cornwell, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.12 in
Chance of precipitation38%
Record high96° (1968)
Record low60° (2024)
Wed, 2686° / 69°0.15
86 °
Cornwell, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.15 in
Chance of precipitation27%
Record high96° (1975)
Record low60° (2013)
Thu, 2787° / 70°0.14
87 °
Cornwell, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high87°
Average low70°
Average precipitation0.14 in
Chance of precipitation40%
Record high96° (1987)
Record low60° (1966)
Fri, 2887° / 70°0.14
87 °
Cornwell, Friday, 28 August
Climate normal for this date — 60-year average.
Average high87°
Average low70°
Average precipitation0.14 in
Chance of precipitation35%
Record high96° (1987)
Record low61° (1969)
Sat, 2987° / 70°0.07
87 °
Cornwell, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high87°
Average low70°
Average precipitation0.07 in
Chance of precipitation30%
Record high96° (1998)
Record low60° (1968)
Sun, 3086° / 70°0.11
86 °
Cornwell, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high86°
Average low70°
Average precipitation0.11 in
Chance of precipitation28%
Record high96° (2021)
Record low58° (1965)
Mon, 3185° / 70°0.15
85 °
Cornwell, Monday, 31 August
Climate normal for this date — 60-year average.
Average high85°
Average low70°
Average precipitation0.15 in
Chance of precipitation48%
Record high95° (2010)
Record low59° (1976)
Tue, 0185° / 69°0.1
85 °
Cornwell, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.1 in
Chance of precipitation40%
Record high95° (1993)
Record low58° (1999)
Wed, 0285° / 69°0.13
85 °
Cornwell, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.13 in
Chance of precipitation30%
Record high95° (2011)
Record low56° (1967)
Thu, 0385° / 68°0.15
85 °
Cornwell, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.15 in
Chance of precipitation38%
Record high96° (2020)
Record low56° (1967)
Fri, 0485° / 68°0.14
85 °
Cornwell, Friday, 4 September
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.14 in
Chance of precipitation42%
Record high94° (1975)
Record low58° (1967)
Sat, 0583° / 68°0.19
83 °
Cornwell, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.19 in
Chance of precipitation40%
Record high94° (2007)
Record low56° (1997)
Sun, 0684° / 68°0.12
84 °
Cornwell, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.12 in
Chance of precipitation32%
Record high94° (2023)
Record low58° (1984)
Mon, 0784° / 67°0.09
84 °
Cornwell, Monday, 7 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.09 in
Chance of precipitation25%
Record high96° (1990)
Record low56° (2017)
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 Cornwell, SC 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 Cornwell, SC 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.