Weather in West Sayville, NY
West Sayville, Sunday, 9 August, 11:10
Overcast. Feels like 93°. High 88°, low 72°.
Monthly outlook for West Sayville, NY: average high 82.1°, average low 70.4°. That is 2.3° above the climate normal for August. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 11 August (89.5°), the coolest 15 August (65.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 82.5° | 78.7° | +2.1° |
| 19 August – 28 August | 81.6° | 77.2° | +2.4° |
| 29 August – 7 September | at normal | 76° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Islip (4 mi).
0.01
West Sayville, Monday, 10 August
Light rain. High 88°, low 72°.
0.02West Sayville, Tuesday, 11 August
Light rain. High 89°, low 75°.
0West Sayville, Wednesday, 12 August
Overcast. High 83°, low 72°.
0.04West Sayville, Thursday, 13 August
Light rain. High 86°, low 74°.
0
West Sayville, Friday, 14 August
Partly cloudy. High 80°, low 69°.
0
West Sayville, Saturday, 15 August
Clear. High 78°, low 65°.
0West Sayville, Sunday, 16 August
Overcast. High 79°, low 66°.
0.46West Sayville, Monday, 17 August
Rain. High 72°, low 67°.
0West Sayville, Tuesday, 18 August
Overcast. High 80°, low 65°.
0
West Sayville, Wednesday, 19 August
Mostly clear. High 78°, low 72°.
0.04West Sayville, Thursday, 20 August
Light rain. High 82°, low 73°.
0West Sayville, Friday, 21 August
Partly cloudy. High 80°, low 67°.
0West Sayville, Saturday, 22 August
Clear. High 82°, low 73°.
0.02West Sayville, Sunday, 23 August
Light rain. High 88°, low 75°.
0West Sayville, Monday, 24 August
Clear. High 79°, low 68°.
0.09West Sayville, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.08West Sayville, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.12
West Sayville, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19West Sayville, Friday, 28 August
Climate normal for this date — 60-year average.
0.14West Sayville, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07West Sayville, Sunday, 30 August
Climate normal for this date — 60-year average.
0.05West Sayville, Monday, 31 August
Climate normal for this date — 60-year average.
0.06West Sayville, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.19West Sayville, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11West Sayville, Thursday, 3 September
Climate normal for this date — 60-year average.
0.13West Sayville, Friday, 4 September
Climate normal for this date — 60-year average.
0.05West Sayville, Saturday, 5 September
Climate normal for this date — 60-year average.
0.13West Sayville, Sunday, 6 September
Climate normal for this date — 60-year average.
0.08West Sayville, 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 West Sayville, 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 West Sayville, 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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