Weather in Shelter Island Heights, NY
Shelter Island Heights, Sunday, 9 August, 14:27
Partly cloudy. Feels like 91°. High 86°, low 75°.
Monthly outlook for Shelter Island Heights, NY: average high 78.4°, average low 69.2°. That is 2.3° above the climate normal for August. Precipitation is expected on 4 days (about 1.8 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 10 August (86.4°), the coolest 15 August (63.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 78.8° | 74.7° | +2.3° |
| 19 August – 28 August | 77.8° | 73.5° | +2.4° |
| 29 August – 7 September | at normal | 72.4° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Sag Harbor (6 mi).
0.26
Shelter Island Heights, Monday, 10 August
Heavy rain. High 86°, low 72°.
0
Shelter Island Heights, Tuesday, 11 August
Overcast. High 81°, low 74°.
0Shelter Island Heights, Wednesday, 12 August
Overcast. High 77°, low 69°.
0.02Shelter Island Heights, Thursday, 13 August
Light rain. High 82°, low 72°.
0
Shelter Island Heights, Friday, 14 August
Clear. High 76°, low 67°.
0Shelter Island Heights, Saturday, 15 August
Clear. High 77°, low 64°.
0Shelter Island Heights, Sunday, 16 August
Partly cloudy. High 74°, low 64°.
0.94Shelter Island Heights, Monday, 17 August
Heavy rain. High 72°, low 68°.
0Shelter Island Heights, Tuesday, 18 August
Overcast. High 77°, low 65°.
0.01Shelter Island Heights, Wednesday, 19 August
Light rain. High 75°, low 71°.
0.08Shelter Island Heights, Thursday, 20 August
Light rain. High 79°, low 70°.
0Shelter Island Heights, Friday, 21 August
Partly cloudy. High 76°, low 67°.
0Shelter Island Heights, Saturday, 22 August
Clear. High 79°, low 71°.
0.43Shelter Island Heights, Sunday, 23 August
Rain. High 82°, low 73°.
0Shelter Island Heights, Monday, 24 August
Clear. High 75°, low 66°.
0.1Shelter Island Heights, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.06
Shelter Island Heights, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.09Shelter Island Heights, Thursday, 27 August
Climate normal for this date — 60-year average.
0.16Shelter Island Heights, Friday, 28 August
Climate normal for this date — 60-year average.
0.17
Shelter Island Heights, Saturday, 29 August
Climate normal for this date — 60-year average.
0.1Shelter Island Heights, Sunday, 30 August
Climate normal for this date — 60-year average.
0.06Shelter Island Heights, Monday, 31 August
Climate normal for this date — 60-year average.
0.07Shelter Island Heights, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.21Shelter Island Heights, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.1Shelter Island Heights, Thursday, 3 September
Climate normal for this date — 60-year average.
0.14Shelter Island Heights, Friday, 4 September
Climate normal for this date — 60-year average.
0.05Shelter Island Heights, Saturday, 5 September
Climate normal for this date — 60-year average.
0.12Shelter Island Heights, Sunday, 6 September
Climate normal for this date — 60-year average.
0.1Shelter Island Heights, 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 Shelter Island Heights, NY 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 Shelter Island Heights, NY 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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