Weather in Head of the Harbor, NY
Head of the Harbor, Sunday, 9 August, 15:24
Clear. Feels like 95°. High 89°, low 75°.
Monthly outlook for Head of the Harbor, NY: average high 80.8°, average low 70.6°. That is 1.1° above the climate normal for August. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 9 August (88.7°), the coolest 17 August (66.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 80.9° | 79.6° | +0.8° |
| 19 August – 28 August | 80.6° | 77.9° | +1.5° |
| 29 August – 7 September | at normal | 76.4° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Stony Brook University (2 mi).
0.2
Head of the Harbor, Monday, 10 August
Heavy rain. High 87°, low 69°.
0
Head of the Harbor, Tuesday, 11 August
Overcast. High 86°, low 70°.
0Head of the Harbor, Wednesday, 12 August
Light rain. High 79°, low 73°.
0Head of the Harbor, Thursday, 13 August
Clear. High 83°, low 71°.
0.02Head of the Harbor, Friday, 14 August
Light rain. High 73°, low 68°.
0
Head of the Harbor, Saturday, 15 August
Mostly clear. High 75°, low 68°.
0.41Head of the Harbor, Sunday, 16 August
Rain. High 78°, low 73°.
0.03Head of the Harbor, Monday, 17 August
Light rain. High 79°, low 66°.
0Head of the Harbor, Tuesday, 18 August
Overcast. High 81°, low 70°.
0.31Head of the Harbor, Wednesday, 19 August
Rain. High 83°, low 73°.
0Head of the Harbor, Thursday, 20 August
Overcast. High 79°, low 69°.
0.02Head of the Harbor, Friday, 21 August
Light rain. High 83°, low 72°.
0.01Head of the Harbor, Saturday, 22 August
Light rain. High 75°, low 71°.
0Head of the Harbor, Sunday, 23 August
Clear. High 79°, low 70°.
0.03Head of the Harbor, Monday, 24 August
Light rain. High 84°, low 72°.
0.09
Head of the Harbor, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.09Head of the Harbor, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11Head of the Harbor, Thursday, 27 August
Climate normal for this date — 60-year average.
0.18
Head of the Harbor, Friday, 28 August
Climate normal for this date — 60-year average.
0.16Head of the Harbor, Saturday, 29 August
Climate normal for this date — 60-year average.
0.08Head of the Harbor, Sunday, 30 August
Climate normal for this date — 60-year average.
0.05Head of the Harbor, Monday, 31 August
Climate normal for this date — 60-year average.
0.07Head of the Harbor, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.19Head of the Harbor, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Head of the Harbor, Thursday, 3 September
Climate normal for this date — 60-year average.
0.12Head of the Harbor, Friday, 4 September
Climate normal for this date — 60-year average.
0.05Head of the Harbor, Saturday, 5 September
Climate normal for this date — 60-year average.
0.14Head of the Harbor, Sunday, 6 September
Climate normal for this date — 60-year average.
0.1Head of the Harbor, 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 Head of the Harbor, 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 Head of the Harbor, 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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