Monthly outlook for Marysville, SC: average high 90.6°, average low 76.2°. That is 3.5° above the climate normal for August. Precipitation is expected on 10 days (about 5.1 inches), against a normal of 10 days and 3.5 inches. The warmest day looks like 12 August (96.5°), the coolest 17 August (70.5°).
90.6°/76.2°
Average high / low
+3.5°
Above normal
10 / 10
Wet days / normal
5.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
90.4°
84.5°
+3.3°
19 August – 28 August
91°
83.9°
+4°
29 August – 7 September
at normal
82.6°
—
August records over 66 years
96.4°1 August 1999All-time high
64.2°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Pawleys Island (2 mi).
Mon, 1092° / 76°0.12
92 °
Marysville, Monday, 10 August
Rain. High 92°, low 76°.
Pressure30.12 inHg
Wind5.7 mph SW
Humidity54%
Visibility6.2 mi
Dew point72°
Tue, 1196° / 76°0.03
96 °
Marysville, Tuesday, 11 August
Light rain. High 96°, low 76°.
Pressure30.03 inHg
Wind7.1 mph W
Humidity50%
Visibility6.2 mi
Dew point70°
Wed, 1296° / 78°0
96 °
Marysville, Wednesday, 12 August
Clear. High 96°, low 78°.
Pressure29.91 inHg
Wind8.6 mph W
Humidity49%
Visibility6.2 mi
Dew point71°
Thu, 1394° / 75°0.04
94 °
Marysville, Thursday, 13 August
Light rain. High 94°, low 75°.
Pressure29.91 inHg
Wind8.8 mph S
Humidity46%
Visibility—
Dew point68°
Fri, 1496° / 79°0.07
96 °
Marysville, Friday, 14 August
Light rain. High 96°, low 79°.
Pressure30.00 inHg
Wind13.5 mph S
Humidity49%
Visibility—
Dew point72°
Sat, 1583° / 78°0.28
83 °
Marysville, Saturday, 15 August
Light rain. High 83°, low 78°.
Pressure30.15 inHg
Wind10.1 mph E
Humidity76%
Visibility—
Dew point73°
Sun, 1683° / 78°0.1
83 °
Marysville, Sunday, 16 August
Light rain. High 83°, low 78°.
Pressure30.15 inHg
Wind11.3 mph E
Humidity61%
Visibility—
Dew point68°
Mon, 1790° / 70°1.94
90 °
Marysville, Monday, 17 August
Heavy rain. High 90°, low 70°.
Pressure29.97 inHg
Wind17.5 mph S
Humidity62%
Visibility—
Dew point74°
Tue, 1886° / 74°1.04
86 °
Marysville, Tuesday, 18 August
Rain. High 86°, low 74°.
Pressure29.94 inHg
Wind15.2 mph SW
Humidity77%
Visibility—
Dew point73°
Wed, 1991° / 73°0.01
91 °
Marysville, Wednesday, 19 August
Light rain. High 91°, low 73°.
Pressure29.91 inHg
Wind14.8 mph SW
Humidity61%
Visibility—
Dew point71°
Thu, 2094° / 76°0.01
94 °
Marysville, Thursday, 20 August
Light rain. High 94°, low 76°.
Pressure29.83 inHg
Wind11.7 mph W
Humidity47%
Visibility—
Dew point68°
Fri, 2192° / 75°0.04
92 °
Marysville, Friday, 21 August
Light rain. High 92°, low 75°.
Pressure29.85 inHg
Wind9.2 mph SW
Humidity46%
Visibility—
Dew point66°
Sat, 2290° / 78°0.02
90 °
Marysville, Saturday, 22 August
Light rain. High 90°, low 78°.
Pressure30.00 inHg
Wind18.2 mph S
Humidity57%
Visibility—
Dew point71°
Sun, 2392° / 80°0.13
92 °
Marysville, Sunday, 23 August
Light rain. High 92°, low 80°.
Pressure30.00 inHg
Wind17.8 mph S
Humidity59%
Visibility—
Dew point74°
Mon, 2488° / 78°1.08
88 °
Marysville, Monday, 24 August
Rain. High 88°, low 78°.
Pressure30.06 inHg
Wind11.9 mph SW
Humidity64%
Visibility—
Dew point73°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 74°0.19
83 °
Marysville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low74°
Average precipitation0.19 in
Chance of precipitation58%
Record high93° (1968)
Record low68° (2012)
Wed, 2683° / 74°0.22
83 °
Marysville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low74°
Average precipitation0.22 in
Chance of precipitation48%
Record high90° (1965)
Record low70° (2013)
Thu, 2783° / 74°0.23
83 °
Marysville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low74°
Average precipitation0.23 in
Chance of precipitation45%
Record high91° (1965)
Record low65° (1966)
Fri, 2884° / 74°0.32
84 °
Marysville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low74°
Average precipitation0.32 in
Chance of precipitation62%
Record high91° (1987)
Record low64° (1968)
Sat, 2983° / 74°0.18
83 °
Marysville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low74°
Average precipitation0.18 in
Chance of precipitation50%
Record high91° (1990)
Record low64° (1986)
Sun, 3083° / 74°0.24
83 °
Marysville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low74°
Average precipitation0.24 in
Chance of precipitation57%
Record high89° (1998)
Record low64° (1986)
Mon, 3183° / 74°0.25
83 °
Marysville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low74°
Average precipitation0.25 in
Chance of precipitation53%
Record high91° (1970)
Record low65° (1999)
Tue, 0183° / 74°0.13
83 °
Marysville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high83°
Average low74°
Average precipitation0.13 in
Chance of precipitation43%
Record high89° (1994)
Record low63° (1999)
Wed, 0282° / 74°0.23
82 °
Marysville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.23 in
Chance of precipitation53%
Record high90° (2012)
Record low64° (1967)
Thu, 0383° / 73°0.15
83 °
Marysville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low73°
Average precipitation0.15 in
Chance of precipitation47%
Record high91° (2020)
Record low64° (2025)
Fri, 0482° / 73°0.19
82 °
Marysville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.19 in
Chance of precipitation45%
Record high92° (2020)
Record low65° (2025)
Sat, 0582° / 73°0.47
82 °
Marysville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.47 in
Chance of precipitation57%
Record high92° (2023)
Record low64° (1994)
Sun, 0682° / 73°0.22
82 °
Marysville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.22 in
Chance of precipitation55%
Record high92° (1983)
Record low63° (1997)
Mon, 0782° / 73°0.18
82 °
Marysville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high82°
Average low73°
Average precipitation0.18 in
Chance of precipitation52%
Record high91° (1983)
Record low64° (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 Marysville, 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 Marysville, 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.