Weather in Mount Sinai, NY
Mount Sinai, Thursday, 5 November, 15:23
Overcast. Feels like 68°. High 69°, low 60°.
Monthly outlook for Mount Sinai, NY: average high 55.7°, average low 48.6°. That is 1.9° above the climate normal for November. Precipitation is expected on 1 day (about 1.4 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 5 November (68.6°), the coolest 13 November (38.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 5 November – 14 November | 55.8° | 53.4° | +1.3° |
| 15 November – 24 November | 55.4° | 49.6° | +3.2° |
| 25 November – 4 December | at normal | 47.6° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Stony Brook University (6 mi).
1.35
Mount Sinai, Friday, 6 November
Heavy rain. High 66°, low 59°.
0.01Mount Sinai, Saturday, 7 November
Light rain. High 61°, low 51°.
0.01Mount Sinai, Sunday, 8 November
Light rain. High 58°, low 51°.
0.02Mount Sinai, Monday, 9 November
Light rain. High 54°, low 50°.
0
Mount Sinai, Tuesday, 10 November
Partly cloudy. High 56°, low 49°.
0
Mount Sinai, Wednesday, 11 November
Mostly clear. High 57°, low 52°.
0
Mount Sinai, Thursday, 12 November
Clear. High 48°, low 41°.
0Mount Sinai, Friday, 13 November
Overcast. High 43°, low 39°.
0Mount Sinai, Saturday, 14 November
Mostly clear. High 46°, low 40°.
0Mount Sinai, Sunday, 15 November
Clear. High 50°, low 41°.
0Mount Sinai, Monday, 16 November
Clear. High 56°, low 47°.
0Mount Sinai, Tuesday, 17 November
Overcast. High 55°, low 49°.
0Mount Sinai, Wednesday, 18 November
Clear. High 56°, low 48°.
0Mount Sinai, Thursday, 19 November
Mostly clear. High 56°, low 49°.
0Mount Sinai, Friday, 20 November
Mostly clear. High 60°, low 52°.
0.11
Mount Sinai, Saturday, 21 November
Climate normal for this date — 60-year average.
0.16Mount Sinai, Sunday, 22 November
Climate normal for this date — 60-year average.
0.13Mount Sinai, Monday, 23 November
Climate normal for this date — 60-year average.
0.1Mount Sinai, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.15Mount Sinai, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.22Mount Sinai, Thursday, 26 November
Climate normal for this date — 60-year average.
0.13Mount Sinai, Friday, 27 November
Climate normal for this date — 60-year average.
0.17Mount Sinai, Saturday, 28 November
Climate normal for this date — 60-year average.
0.11Mount Sinai, Sunday, 29 November
Climate normal for this date — 60-year average.
0.15Mount Sinai, Monday, 30 November
Climate normal for this date — 60-year average.
0.14Mount Sinai, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.14Mount Sinai, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.15Mount Sinai, Thursday, 3 December
Climate normal for this date — 60-year average.
0.12Mount Sinai, Friday, 4 December
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 Mount Sinai, 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 Mount Sinai, 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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