Weather in Islandia, NY
Islandia, Sunday, 1 November, 05:54
Clear. Feels like 43°. High 59°, low 38°.
Monthly outlook for Islandia, NY: average high 57.3°, average low 47.7°. That is 1.6° above the climate normal for November. Precipitation is expected on 6 days (about 2.0 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 4 November (69°), the coolest 15 November (37.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 1 November – 10 November | 62.6° | 56° | +3.7° |
| 11 November – 20 November | 48.4° | 51.3° | -1.6° |
| 21 November – 30 November | at normal | 48.9° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Brentwood (5 mi).
0
Islandia, Monday, 2 November
Overcast. High 66°, low 45°.
0Islandia, Tuesday, 3 November
Overcast. High 66°, low 49°.
0
Islandia, Wednesday, 4 November
Clear. High 69°, low 53°.
0.38
Islandia, Thursday, 5 November
Rain. High 67°, low 60°.
0.44Islandia, Friday, 6 November
Rain. High 64°, low 60°.
0.1Islandia, Saturday, 7 November
Light rain. High 59°, low 56°.
0Islandia, Sunday, 8 November
Clear. High 61°, low 53°.
0Islandia, Monday, 9 November
Light rain. High 58°, low 52°.
0
Islandia, Tuesday, 10 November
Mostly clear. High 57°, low 50°.
0Islandia, Wednesday, 11 November
Clear. High 54°, low 46°.
0.22Islandia, Thursday, 12 November
Rain. High 48°, low 42°.
0.69Islandia, Friday, 13 November
Rain. High 51°, low 45°.
0.17Islandia, Saturday, 14 November
Light rain. High 43°, low 39°.
0Islandia, Sunday, 15 November
Overcast. High 42°, low 38°.
0Islandia, Monday, 16 November
Clear. High 52°, low 38°.
0.14
Islandia, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08
Islandia, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.08Islandia, Thursday, 19 November
Climate normal for this date — 60-year average.
0.12Islandia, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Islandia, Saturday, 21 November
Climate normal for this date — 60-year average.
0.17Islandia, Sunday, 22 November
Climate normal for this date — 60-year average.
0.12Islandia, Monday, 23 November
Climate normal for this date — 60-year average.
0.09Islandia, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.14Islandia, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.21Islandia, Thursday, 26 November
Climate normal for this date — 60-year average.
0.13Islandia, Friday, 27 November
Climate normal for this date — 60-year average.
0.16Islandia, Saturday, 28 November
Climate normal for this date — 60-year average.
0.11Islandia, Sunday, 29 November
Climate normal for this date — 60-year average.
0.14Islandia, Monday, 30 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 Islandia, 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 Islandia, 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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