Weather in Shell Island, FL
Shell Island, Sunday, 18 October, 08:38
Clear. Feels like 57°. High 69°, low 56°.
Monthly outlook for Shell Island, FL: average high 78.8°, average low 61.2°. That is 0.9° above the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 2 November (86.2°), the coolest 23 October (49.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 76.6° | 77.8° | -0.7° |
| 28 October – 6 November | 82.4° | 75° | +4.1° |
| 7 November – 16 November | at normal | 71.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — St. Marks (1 mi).
0Shell Island, Monday, 19 October
Clear. High 75°, low 54°.
0Shell Island, Tuesday, 20 October
Clear. High 75°, low 50°.
0
Shell Island, Wednesday, 21 October
Mostly clear. High 77°, low 50°.
0Shell Island, Thursday, 22 October
Clear. High 77°, low 50°.
0Shell Island, Friday, 23 October
Clear. High 75°, low 49°.
0Shell Island, Saturday, 24 October
Clear. High 78°, low 59°.
0Shell Island, Sunday, 25 October
Clear. High 78°, low 63°.
0
Shell Island, Monday, 26 October
Partly cloudy. High 80°, low 62°.
0
Shell Island, Tuesday, 27 October
Overcast. High 82°, low 66°.
0.52
Shell Island, Wednesday, 28 October
Rain. High 76°, low 68°.
0.05Shell Island, Thursday, 29 October
Light rain. High 82°, low 70°.
0.07Shell Island, Friday, 30 October
Light rain. High 82°, low 72°.
0Shell Island, Saturday, 31 October
Overcast. High 83°, low 69°.
0.18Shell Island, Sunday, 1 November
Light rain. High 85°, low 72°.
0.02Shell Island, Monday, 2 November
Light rain. High 86°, low 72°.
0.06Shell Island, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.14Shell Island, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.04Shell Island, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Shell Island, Friday, 6 November
Climate normal for this date — 60-year average.
0.09Shell Island, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Shell Island, Sunday, 8 November
Climate normal for this date — 60-year average.
0.12Shell Island, Monday, 9 November
Climate normal for this date — 60-year average.
0.11Shell Island, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Shell Island, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Shell Island, Thursday, 12 November
Climate normal for this date — 60-year average.
0.08Shell Island, Friday, 13 November
Climate normal for this date — 60-year average.
0.09Shell Island, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13Shell Island, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Shell Island, Monday, 16 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 Shell Island, FL 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 Shell Island, FL 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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