Weather in Johns Island, SC
Johns Island, Saturday, 31 October, 01:26
Overcast. Feels like 60°. High 73°, low 59°.
Monthly outlook for Johns Island, SC: average high 74°, average low 58.3°. That is 2.9° above the climate normal for October. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 6 November (82.7°), the coolest 15 November (39.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 31 October – 9 November | 76.1° | 70.1° | +3.3° |
| 10 November – 19 November | 70.5° | 66.5° | +2.2° |
| 20 November – 29 November | at normal | 65.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — North Charleston (8 mi).
0Johns Island, Sunday, 1 November
Overcast. High 72°, low 55°.
0Johns Island, Monday, 2 November
Overcast. High 72°, low 62°.
0
Johns Island, Tuesday, 3 November
Mostly clear. High 79°, low 63°.
0
Johns Island, Wednesday, 4 November
Clear. High 80°, low 68°.
0.24
Johns Island, Thursday, 5 November
Rain. High 73°, low 67°.
0.15Johns Island, Friday, 6 November
Light rain. High 83°, low 67°.
0
Johns Island, Saturday, 7 November
Partly cloudy. High 81°, low 66°.
0Johns Island, Sunday, 8 November
Clear. High 75°, low 57°.
0Johns Island, Monday, 9 November
Overcast. High 72°, low 55°.
0Johns Island, Tuesday, 10 November
Overcast. High 76°, low 57°.
0Johns Island, Wednesday, 11 November
Overcast. High 72°, low 58°.
0Johns Island, Thursday, 12 November
Clear. High 78°, low 56°.
0Johns Island, Friday, 13 November
Partly cloudy. High 78°, low 55°.
0Johns Island, Saturday, 14 November
Clear. High 61°, low 47°.
0Johns Island, Sunday, 15 November
Overcast. High 58°, low 40°.
0.07Johns Island, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Johns Island, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.05Johns Island, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Johns Island, Thursday, 19 November
Climate normal for this date — 60-year average.
0.05Johns Island, Friday, 20 November
Climate normal for this date — 60-year average.
0.08Johns Island, Saturday, 21 November
Climate normal for this date — 60-year average.
0.07Johns Island, Sunday, 22 November
Climate normal for this date — 60-year average.
0.1Johns Island, Monday, 23 November
Climate normal for this date — 60-year average.
0.07Johns Island, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.13Johns Island, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.08Johns Island, Thursday, 26 November
Climate normal for this date — 60-year average.
0.1Johns Island, Friday, 27 November
Climate normal for this date — 60-year average.
0.08
Johns Island, Saturday, 28 November
Climate normal for this date — 60-year average.
0.07Johns Island, Sunday, 29 November
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 Johns Island, 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 Johns Island, 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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