Monthly outlook for Duncan Township, SC: average high 96.4°, average low 72.2°. That is 5.7° above the climate normal for August. Precipitation is expected on 7 days (about 1.7 inches), against a normal of 7 days and 2.1 inches. The warmest day looks like 22 August (107.9°), the coolest 9 August (69.6°).
96.4°/72.2°
Average high / low
+5.7°
Above normal
7 / 7
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
94.6°
86.1°
+4.7°
19 August – 28 August
99.3°
85.9°
+7.4°
29 August – 7 September
at normal
83.9°
—
August records over 66 years
102.4°3 August 2011All-time high
56.1°8 August 2004All-time low
Climate normals and records are computed from the nearest reference point — Mauldin (15 mi).
Mon, 1091° / 73°0
91 °
Duncan Township, Monday, 10 August
Partly cloudy. High 91°, low 73°.
Pressure30.09 inHg
Wind9.1 mph W
Humidity41%
Visibility6.2 mi
Dew point66°
Tue, 11100° / 73°0
100 °
Duncan Township, Tuesday, 11 August
Clear. High 100°, low 73°.
Pressure30.03 inHg
Wind4.2 mph SW
Humidity41%
Visibility6.2 mi
Dew point66°
Wed, 12100° / 73°0
100 °
Duncan Township, Wednesday, 12 August
Partly cloudy. High 100°, low 73°.
Pressure29.91 inHg
Wind8.1 mph W
Humidity38%
Visibility6.2 mi
Dew point66°
Thu, 1399° / 76°0.13
99 °
Duncan Township, Thursday, 13 August
Light rain. High 99°, low 76°.
Pressure29.88 inHg
Wind10.3 mph W
Humidity33%
Visibility—
Dew point62°
Fri, 1498° / 72°0.09
98 °
Duncan Township, Friday, 14 August
Light rain. High 98°, low 72°.
Pressure30.00 inHg
Wind8.4 mph NW
Humidity39%
Visibility—
Dew point66°
Sat, 1583° / 70°0.08
83 °
Duncan Township, Saturday, 15 August
Light rain. High 83°, low 70°.
Pressure30.18 inHg
Wind6.7 mph NE
Humidity81%
Visibility—
Dew point71°
Sun, 1692° / 71°0.11
92 °
Duncan Township, Sunday, 16 August
Light rain. High 92°, low 71°.
Pressure30.12 inHg
Wind4.3 mph S
Humidity59%
Visibility—
Dew point70°
Mon, 17101° / 70°0.28
101 °
Duncan Township, Monday, 17 August
Rain. High 101°, low 70°.
Pressure29.88 inHg
Wind9.1 mph N
Humidity34%
Visibility—
Dew point64°
Tue, 1892° / 70°0
92 °
Duncan Township, Tuesday, 18 August
Clear. High 92°, low 70°.
Pressure29.94 inHg
Wind8.2 mph NE
Humidity39%
Visibility—
Dew point60°
Wed, 1994° / 70°0
94 °
Duncan Township, Wednesday, 19 August
Mostly clear. High 94°, low 70°.
Pressure30.00 inHg
Wind7.1 mph E
Humidity39%
Visibility—
Dew point61°
Thu, 2098° / 72°0
98 °
Duncan Township, Thursday, 20 August
Clear. High 98°, low 72°.
Pressure30.00 inHg
Wind4.3 mph SE
Humidity33%
Visibility—
Dew point60°
Fri, 21102° / 75°0
102 °
Duncan Township, Friday, 21 August
Mostly clear. High 102°, low 75°.
Pressure29.94 inHg
Wind6.6 mph W
Humidity33%
Visibility—
Dew point64°
Sat, 22108° / 73°0.84
108 °
Duncan Township, Saturday, 22 August
Heavy rain. High 108°, low 73°.
Pressure29.85 inHg
Wind14.4 mph W
Humidity28%
Visibility—
Dew point62°
Sun, 2398° / 72°0.16
98 °
Duncan Township, Sunday, 23 August
Light rain. High 98°, low 72°.
Pressure29.94 inHg
Wind7.7 mph SE
Humidity42%
Visibility—
Dew point67°
Mon, 2496° / 75°0
96 °
Duncan Township, Monday, 24 August
Overcast. High 96°, low 75°.
Pressure30.03 inHg
Wind6.2 mph S
Humidity42%
Visibility—
Dew point66°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2585° / 68°0.1
85 °
Duncan Township, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.1 in
Chance of precipitation32%
Record high96° (1968)
Record low57° (1969)
Wed, 2685° / 68°0.17
85 °
Duncan Township, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.17 in
Chance of precipitation30%
Record high97° (1998)
Record low57° (2013)
Thu, 2786° / 68°0.1
86 °
Duncan Township, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.1 in
Chance of precipitation42%
Record high95° (1998)
Record low56° (1966)
Fri, 2886° / 68°0.07
86 °
Duncan Township, Friday, 28 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.07 in
Chance of precipitation25%
Record high94° (2024)
Record low59° (1966)
Sat, 2986° / 68°0.04
86 °
Duncan Township, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.04 in
Chance of precipitation28%
Record high96° (2024)
Record low56° (1969)
Sun, 3085° / 68°0.11
85 °
Duncan Township, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.11 in
Chance of precipitation38%
Record high94° (2024)
Record low56° (1965)
Mon, 3184° / 68°0.13
84 °
Duncan Township, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.13 in
Chance of precipitation47%
Record high93° (1993)
Record low58° (1999)
Tue, 0184° / 67°0.08
84 °
Duncan Township, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.08 in
Chance of precipitation40%
Record high93° (2016)
Record low55° (1999)
Wed, 0284° / 67°0.11
84 °
Duncan Township, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.11 in
Chance of precipitation37%
Record high97° (2011)
Record low55° (1967)
Thu, 0384° / 66°0.15
84 °
Duncan Township, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.15 in
Chance of precipitation43%
Record high93° (2015)
Record low52° (1967)
Fri, 0483° / 67°0.14
83 °
Duncan Township, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.14 in
Chance of precipitation42%
Record high95° (1975)
Record low56° (1994)
Sat, 0583° / 66°0.17
83 °
Duncan Township, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.17 in
Chance of precipitation32%
Record high93° (1975)
Record low53° (1997)
Sun, 0683° / 66°0.11
83 °
Duncan Township, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.11 in
Chance of precipitation30%
Record high94° (2023)
Record low55° (1982)
Mon, 0783° / 66°0.12
83 °
Duncan Township, Monday, 7 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.12 in
Chance of precipitation18%
Record high95° (1990)
Record low54° (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 Duncan Township, 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 Duncan Township, 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.