Weather in Saint Simons Island, GA
Saint Simons Island, Sunday, 9 August, 06:47
Overcast. Feels like 76°. High 89°, low 75°.
Monthly outlook for Saint Simons Island, GA: average high 91.1°, average low 76.5°. That is 2.7° above the climate normal for August. Precipitation is expected on 9 days (about 3.8 inches), against a normal of 11 days and 3.1 inches. The warmest day looks like 13 August (96.8°), the coolest 15 August (74°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 92.7° | 86.3° | +3.5° |
| 19 August – 28 August | 88.4° | 85.5° | +1.6° |
| 29 August – 7 September | at normal | 84.1° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Darien (15 mi).
0.02
Saint Simons Island, Monday, 10 August
Light rain. High 90°, low 75°.
0.06Saint Simons Island, Tuesday, 11 August
Light rain. High 96°, low 77°.
0.03Saint Simons Island, Wednesday, 12 August
Light rain. High 94°, low 77°.
0.1Saint Simons Island, Thursday, 13 August
Light rain. High 97°, low 77°.
0.07Saint Simons Island, Friday, 14 August
Light rain. High 94°, low 76°.
1.48Saint Simons Island, Saturday, 15 August
Heavy rain. High 95°, low 74°.
0.15Saint Simons Island, Sunday, 16 August
Light rain. High 89°, low 74°.
0.26Saint Simons Island, Monday, 17 August
Rain. High 92°, low 79°.
1.13Saint Simons Island, Tuesday, 18 August
Heavy rain. High 89°, low 76°.
0.07Saint Simons Island, Wednesday, 19 August
Light rain. High 87°, low 75°.
0.01Saint Simons Island, Thursday, 20 August
Light rain. High 88°, low 78°.
0
Saint Simons Island, Friday, 21 August
Clear. High 90°, low 77°.
0Saint Simons Island, Saturday, 22 August
Light rain. High 90°, low 77°.
0
Saint Simons Island, Sunday, 23 August
Partly cloudy. High 88°, low 78°.
0Saint Simons Island, Monday, 24 August
Overcast. High 87°, low 79°.
0.26Saint Simons Island, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.19Saint Simons Island, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.2Saint Simons Island, Thursday, 27 August
Climate normal for this date — 60-year average.
0.21Saint Simons Island, Friday, 28 August
Climate normal for this date — 60-year average.
0.18Saint Simons Island, Saturday, 29 August
Climate normal for this date — 60-year average.
0.3Saint Simons Island, Sunday, 30 August
Climate normal for this date — 60-year average.
0.25Saint Simons Island, Monday, 31 August
Climate normal for this date — 60-year average.
0.24Saint Simons Island, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.25Saint Simons Island, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.2Saint Simons Island, Thursday, 3 September
Climate normal for this date — 60-year average.
0.22Saint Simons Island, Friday, 4 September
Climate normal for this date — 60-year average.
0.25Saint Simons Island, Saturday, 5 September
Climate normal for this date — 60-year average.
0.26Saint Simons Island, Sunday, 6 September
Climate normal for this date — 60-year average.
0.19Saint Simons 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 Saint Simons Island, GA 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 Saint Simons Island, GA 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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