Weather in Summerville, SC
Summerville, Saturday, 8 August, 21:31
Overcast. Feels like 80°. High 86°, low 74°.
Monthly outlook for Summerville, SC: average high 93.7°, average low 74°. That is 3.9° above the climate normal for August. Precipitation is expected on 10 days (about 2.2 inches), against a normal of 10 days and 3.5 inches. The warmest day looks like 20 August (100.7°), the coolest 16 August (71.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 93.1° | 86.6° | +3.6° |
| 18 August – 27 August | 94.5° | 86.2° | +4.7° |
| 28 August – 6 September | at normal | 84.5° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — North Charleston (9 mi).
0.03
Summerville, Sunday, 9 August
Light rain. High 94°, low 74°.
0.28Summerville, Monday, 10 August
Rain. High 97°, low 75°.
0.01Summerville, Tuesday, 11 August
Light rain. High 99°, low 75°.
0.04Summerville, Wednesday, 12 August
Light rain. High 100°, low 74°.
0.06Summerville, Thursday, 13 August
Light rain. High 95°, low 75°.
0.46Summerville, Friday, 14 August
Rain. High 99°, low 75°.
0.56Summerville, Saturday, 15 August
Rain. High 85°, low 74°.
0Summerville, Sunday, 16 August
Overcast. High 89°, low 71°.
0.17Summerville, Monday, 17 August
Rain. High 88°, low 72°.
0.37Summerville, Tuesday, 18 August
Rain. High 92°, low 73°.
0.08Summerville, Wednesday, 19 August
Light rain. High 89°, low 73°.
0
Summerville, Thursday, 20 August
Mostly clear. High 101°, low 74°.
0
Summerville, Friday, 21 August
Clear. High 93°, low 74°.
0
Summerville, Saturday, 22 August
Partly cloudy. High 96°, low 74°.
0.1Summerville, Sunday, 23 August
Light rain. High 96°, low 76°.
0.23Summerville, Monday, 24 August
Climate normal for this date — 60-year average.
0.22Summerville, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.16Summerville, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.19Summerville, Thursday, 27 August
Climate normal for this date — 60-year average.
0.26Summerville, Friday, 28 August
Climate normal for this date — 60-year average.
0.14
Summerville, Saturday, 29 August
Climate normal for this date — 60-year average.
0.27Summerville, Sunday, 30 August
Climate normal for this date — 60-year average.
0.23Summerville, Monday, 31 August
Climate normal for this date — 60-year average.
0.13Summerville, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.17Summerville, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.16Summerville, Thursday, 3 September
Climate normal for this date — 60-year average.
0.24Summerville, Friday, 4 September
Climate normal for this date — 60-year average.
0.41Summerville, Saturday, 5 September
Climate normal for this date — 60-year average.
0.19Summerville, Sunday, 6 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 Summerville, 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 Summerville, 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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