Weather in Myrtle Island, SC
Myrtle Island, Sunday, 9 August, 08:10
Overcast. Feels like 80°. High 88°, low 76°.
Monthly outlook for Myrtle Island, SC: average high 91.8°, average low 76.2°. That is 3.1° above the climate normal for August. Precipitation is expected on 10 days (about 4.6 inches), against a normal of 11 days and 3.3 inches. The warmest day looks like 13 August (98.5°), the coolest 17 August (73.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 92.9° | 86.4° | +3.6° |
| 19 August – 28 August | 90° | 85.6° | +2.4° |
| 29 August – 7 September | at normal | 84.2° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Bluffton (4 mi).
0.09
Myrtle Island, Monday, 10 August
Light rain. High 94°, low 75°.
0Myrtle Island, Tuesday, 11 August
Light rain. High 97°, low 77°.
0
Myrtle Island, Wednesday, 12 August
Mostly clear. High 98°, low 77°.
0.48Myrtle Island, Thursday, 13 August
Rain. High 98°, low 77°.
0.13Myrtle Island, Friday, 14 August
Light rain. High 96°, low 75°.
1.09Myrtle Island, Saturday, 15 August
Rain. High 93°, low 76°.
0.21Myrtle Island, Sunday, 16 August
Light rain. High 86°, low 75°.
1.77Myrtle Island, Monday, 17 August
Heavy rain. High 91°, low 74°.
0.35Myrtle Island, Tuesday, 18 August
Light rain. High 88°, low 74°.
0.17Myrtle Island, Wednesday, 19 August
Rain. High 90°, low 77°.
0
Myrtle Island, Thursday, 20 August
Clear. High 90°, low 77°.
0
Myrtle Island, Friday, 21 August
Partly cloudy. High 91°, low 76°.
0.06Myrtle Island, Saturday, 22 August
Light rain. High 93°, low 77°.
0.02Myrtle Island, Sunday, 23 August
Light rain. High 88°, low 78°.
0Myrtle Island, Monday, 24 August
Light rain. High 88°, low 79°.
0.23Myrtle Island, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.17Myrtle Island, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.15Myrtle Island, Thursday, 27 August
Climate normal for this date — 60-year average.
0.18Myrtle Island, Friday, 28 August
Climate normal for this date — 60-year average.
0.15Myrtle Island, Saturday, 29 August
Climate normal for this date — 60-year average.
0.34Myrtle Island, Sunday, 30 August
Climate normal for this date — 60-year average.
0.2Myrtle Island, Monday, 31 August
Climate normal for this date — 60-year average.
0.2Myrtle Island, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.26Myrtle Island, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.15
Myrtle Island, Thursday, 3 September
Climate normal for this date — 60-year average.
0.17Myrtle Island, Friday, 4 September
Climate normal for this date — 60-year average.
0.26Myrtle Island, Saturday, 5 September
Climate normal for this date — 60-year average.
0.21Myrtle Island, Sunday, 6 September
Climate normal for this date — 60-year average.
0.15Myrtle Island, 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 Myrtle 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 Myrtle 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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