Monthly outlook for Sandy, SC: average high 95.1°, average low 74.9°. That is 4.7° above the climate normal for August. Precipitation is expected on 10 days (about 2.1 inches), against a normal of 10 days and 3.5 inches. The warmest day looks like 11 August (103.6°), the coolest 17 August (72.1°).
95.1°/74.9°
Average high / low
+4.7°
Above normal
10 / 10
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
94.9°
86.6°
+4.6°
18 August – 27 August
95.5°
86.2°
+5.2°
28 August – 6 September
at normal
84.5°
—
August records over 66 years
100°10 August 2019All-time high
62.1°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — North Charleston (6 mi).
Sun, 0993° / 74°0.07
93 °
Sandy, Sunday, 9 August
Light rain. High 93°, low 74°.
Pressure30.12 inHg
Wind5.2 mph S
Humidity48%
Visibility6.2 mi
Dew point70°
Mon, 1098° / 76°0.13
98 °
Sandy, Monday, 10 August
Rain. High 98°, low 76°.
Pressure30.12 inHg
Wind5.6 mph W
Humidity42%
Visibility6.2 mi
Dew point70°
Tue, 11104° / 76°0.02
104 °
Sandy, Tuesday, 11 August
Light rain. High 104°, low 76°.
Pressure30.03 inHg
Wind7.4 mph W
Humidity35%
Visibility6.2 mi
Dew point67°
Wed, 12102° / 77°0.03
102 °
Sandy, Wednesday, 12 August
Light rain. High 102°, low 77°.
Pressure29.94 inHg
Wind11.5 mph W
Humidity35%
Visibility6.2 mi
Dew point67°
Thu, 13102° / 77°0.11
102 °
Sandy, Thursday, 13 August
Light rain. High 102°, low 77°.
Pressure29.91 inHg
Wind10.5 mph W
Humidity28%
Visibility—
Dew point60°
Fri, 14103° / 75°0.04
103 °
Sandy, Friday, 14 August
Light rain. High 103°, low 75°.
Pressure29.97 inHg
Wind11.5 mph W
Humidity25%
Visibility—
Dew point57°
Sat, 1587° / 75°0.19
87 °
Sandy, Saturday, 15 August
Light rain. High 87°, low 75°.
Pressure30.12 inHg
Wind7.8 mph N
Humidity61%
Visibility—
Dew point70°
Sun, 1688° / 74°0.02
88 °
Sandy, Sunday, 16 August
Light rain. High 88°, low 74°.
Pressure30.21 inHg
Wind11.8 mph E
Humidity43%
Visibility—
Dew point61°
Mon, 1789° / 72°0
89 °
Sandy, Monday, 17 August
Partly cloudy. High 89°, low 72°.
Pressure30.18 inHg
Wind10.7 mph SE
Humidity41%
Visibility—
Dew point60°
Tue, 1892° / 72°0
92 °
Sandy, Tuesday, 18 August
Light rain. High 92°, low 72°.
Pressure30.06 inHg
Wind9.7 mph SE
Humidity38%
Visibility—
Dew point61°
Wed, 1985° / 74°0.62
85 °
Sandy, Wednesday, 19 August
Rain. High 85°, low 74°.
Pressure29.94 inHg
Wind5.8 mph S
Humidity91%
Visibility—
Dew point73°
Thu, 2099° / 75°0.01
99 °
Sandy, Thursday, 20 August
Light rain. High 99°, low 75°.
Pressure29.91 inHg
Wind9.4 mph S
Humidity38%
Visibility—
Dew point66°
Fri, 21100° / 76°0.52
100 °
Sandy, Friday, 21 August
Heavy rain. High 100°, low 76°.
Pressure29.83 inHg
Wind8.1 mph S
Humidity35%
Visibility—
Dew point65°
Sat, 22100° / 75°0.04
100 °
Sandy, Saturday, 22 August
Light rain. High 100°, low 75°.
Pressure29.83 inHg
Wind11.8 mph W
Humidity35%
Visibility—
Dew point64°
Sun, 2397° / 76°0.24
97 °
Sandy, Sunday, 23 August
Rain. High 97°, low 76°.
Pressure29.85 inHg
Wind9 mph E
Humidity40%
Visibility—
Dew point66°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2485° / 73°0.23
85 °
Sandy, Monday, 24 August
Climate normal for this date — 60-year average.
Average high85°
Average low73°
Average precipitation0.23 in
Chance of precipitation60%
Record high98° (1968)
Record low67° (1981)
Tue, 2585° / 73°0.22
85 °
Sandy, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low73°
Average precipitation0.22 in
Chance of precipitation58%
Record high97° (1968)
Record low65° (1981)
Wed, 2685° / 73°0.16
85 °
Sandy, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low73°
Average precipitation0.16 in
Chance of precipitation60%
Record high93° (1965)
Record low64° (1994)
Thu, 2786° / 73°0.19
86 °
Sandy, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high86°
Average low73°
Average precipitation0.19 in
Chance of precipitation60%
Record high95° (2011)
Record low64° (1966)
Fri, 2885° / 73°0.26
85 °
Sandy, Friday, 28 August
Climate normal for this date — 60-year average.
Average high85°
Average low73°
Average precipitation0.26 in
Chance of precipitation62%
Record high93° (2011)
Record low62° (1968)
Sat, 2985° / 73°0.14
85 °
Sandy, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low73°
Average precipitation0.14 in
Chance of precipitation48%
Record high93° (1990)
Record low62° (1986)
Sun, 3085° / 73°0.27
85 °
Sandy, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high85°
Average low73°
Average precipitation0.27 in
Chance of precipitation62%
Record high94° (1998)
Record low63° (1986)
Mon, 3185° / 73°0.23
85 °
Sandy, Monday, 31 August
Climate normal for this date — 60-year average.
Average high85°
Average low73°
Average precipitation0.23 in
Chance of precipitation53%
Record high92° (1970)
Record low63° (1999)
Tue, 0185° / 72°0.13
85 °
Sandy, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high85°
Average low72°
Average precipitation0.13 in
Chance of precipitation50%
Record high92° (1970)
Record low61° (1999)
Wed, 0284° / 72°0.17
84 °
Sandy, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low72°
Average precipitation0.17 in
Chance of precipitation53%
Record high91° (2020)
Record low64° (1967)
Thu, 0385° / 71°0.16
85 °
Sandy, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high85°
Average low71°
Average precipitation0.16 in
Chance of precipitation38%
Record high97° (2020)
Record low63° (1967)
Fri, 0484° / 72°0.24
84 °
Sandy, Friday, 4 September
Climate normal for this date — 60-year average.
Average high84°
Average low72°
Average precipitation0.24 in
Chance of precipitation40%
Record high98° (2020)
Record low65° (2023)
Sat, 0584° / 72°0.41
84 °
Sandy, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high84°
Average low72°
Average precipitation0.41 in
Chance of precipitation55%
Record high93° (2023)
Record low60° (1997)
Sun, 0684° / 71°0.19
84 °
Sandy, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high84°
Average low71°
Average precipitation0.19 in
Chance of precipitation58%
Record high94° (2023)
Record low59° (1997)
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 Sandy, 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 Sandy, 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.