Weather in West Islip, NY
West Islip, Tuesday, 20 October, 07:04
Clear. Feels like 50°. High 68°, low 44°.
Monthly outlook for West Islip, NY: average high 58.6°, average low 46.2°. That is 0° below the climate normal for October. Precipitation is expected on 1 day (about 1.4 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 27 October (68.6°), the coolest 24 October (38.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 60.3° | 59.4° | +0.5° |
| 30 October – 8 November | 55.7° | 56.5° | -0.4° |
| 9 November – 18 November | at normal | 52.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Bay Shore (3 mi).
0
West Islip, Wednesday, 21 October
Mostly clear. High 61°, low 41°.
0
West Islip, Thursday, 22 October
Clear. High 63°, low 46°.
0West Islip, Friday, 23 October
Clear. High 51°, low 42°.
0West Islip, Saturday, 24 October
Clear. High 57°, low 39°.
0West Islip, Sunday, 25 October
Clear. High 62°, low 42°.
0
West Islip, Monday, 26 October
Overcast. High 66°, low 53°.
0West Islip, Tuesday, 27 October
Overcast. High 69°, low 58°.
0West Islip, Wednesday, 28 October
Overcast. High 54°, low 45°.
0West Islip, Thursday, 29 October
Overcast. High 52°, low 43°.
0West Islip, Friday, 30 October
Overcast. High 56°, low 46°.
0West Islip, Saturday, 31 October
Overcast. High 55°, low 51°.
0West Islip, Sunday, 1 November
Mostly clear. High 56°, low 49°.
0West Islip, Monday, 2 November
Clear. High 53°, low 45°.
0West Islip, Tuesday, 3 November
Clear. High 56°, low 47°.
1.41
West Islip, Wednesday, 4 November
Heavy rain. High 58°, low 49°.
0.14
West Islip, Thursday, 5 November
Climate normal for this date — 60-year average.
0.11West Islip, Friday, 6 November
Climate normal for this date — 60-year average.
0.1
West Islip, Saturday, 7 November
Climate normal for this date — 60-year average.
0.16West Islip, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1West Islip, Monday, 9 November
Climate normal for this date — 60-year average.
0.18West Islip, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.15West Islip, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.17West Islip, Thursday, 12 November
Climate normal for this date — 60-year average.
0.23West Islip, Friday, 13 November
Climate normal for this date — 60-year average.
0.11West Islip, Saturday, 14 November
Climate normal for this date — 60-year average.
0.12West Islip, Sunday, 15 November
Climate normal for this date — 60-year average.
0.14West Islip, Monday, 16 November
Climate normal for this date — 60-year average.
0.14West Islip, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08West Islip, Wednesday, 18 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 West Islip, 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 Islip, 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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