Weather in Mount Pleasant, SC
Mount Pleasant, Sunday, 9 August, 09:24
Overcast. Feels like 91°. High 90°, low 75°.
Monthly outlook for Mount Pleasant, SC: average high 90.3°, average low 77.6°. That is 2.9° above the climate normal for August. Precipitation is expected on 13 days (about 5.7 inches), against a normal of 10 days and 3.5 inches. The warmest day looks like 12 August (96.4°), the coolest 18 August (73.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 90.9° | 85.1° | +3.2° |
| 19 August – 28 August | 89.3° | 84.5° | +2.7° |
| 29 August – 7 September | at normal | 83.1° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Isle of Palms (5 mi).
0.26
Mount Pleasant, Monday, 10 August
Rain. High 91°, low 76°.
0.08Mount Pleasant, Tuesday, 11 August
Rain. High 95°, low 76°.
0
Mount Pleasant, Wednesday, 12 August
Clear. High 96°, low 79°.
0.03Mount Pleasant, Thursday, 13 August
Light rain. High 96°, low 79°.
0.24Mount Pleasant, Friday, 14 August
Rain. High 94°, low 81°.
0.41Mount Pleasant, Saturday, 15 August
Rain. High 86°, low 81°.
0.14Mount Pleasant, Sunday, 16 August
Light rain. High 85°, low 79°.
0.19Mount Pleasant, Monday, 17 August
Rain. High 87°, low 79°.
3.32Mount Pleasant, Tuesday, 18 August
Heavy rain. High 89°, low 74°.
0.14Mount Pleasant, Wednesday, 19 August
Light rain. High 89°, low 75°.
0.02Mount Pleasant, Thursday, 20 August
Light rain. High 87°, low 77°.
0.06Mount Pleasant, Friday, 21 August
Light rain. High 92°, low 75°.
0.07Mount Pleasant, Saturday, 22 August
Light rain. High 89°, low 76°.
0.06Mount Pleasant, Sunday, 23 August
Light rain. High 91°, low 81°.
0.55Mount Pleasant, Monday, 24 August
Rain. High 89°, low 79°.
0.23Mount Pleasant, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.18Mount Pleasant, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.19Mount Pleasant, Thursday, 27 August
Climate normal for this date — 60-year average.
0.26Mount Pleasant, Friday, 28 August
Climate normal for this date — 60-year average.
0.17
Mount Pleasant, Saturday, 29 August
Climate normal for this date — 60-year average.
0.29Mount Pleasant, Sunday, 30 August
Climate normal for this date — 60-year average.
0.24Mount Pleasant, Monday, 31 August
Climate normal for this date — 60-year average.
0.17Mount Pleasant, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.21Mount Pleasant, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.15Mount Pleasant, Thursday, 3 September
Climate normal for this date — 60-year average.
0.27Mount Pleasant, Friday, 4 September
Climate normal for this date — 60-year average.
0.42Mount Pleasant, Saturday, 5 September
Climate normal for this date — 60-year average.
0.2Mount Pleasant, Sunday, 6 September
Climate normal for this date — 60-year average.
0.15Mount Pleasant, Monday, 7 September
Climate normal for this date — 60-year average.
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 Mount Pleasant, 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 Mount Pleasant, 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.
Sun and moon today
Weather history
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